Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
LI46.35-P-067339
Service Bulletin/Repair Instructions
Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time. OR Rattling, humming, dry sliding/gravel noise from the electric steering system when steering (see attachment). Complaint does not impact the ability to safely steer or control the vehicle. Cause Ball screw drive (KGT) of electric steering damaged by: 1. External force due to: ‑ Hitting the curb/posts with the front wheels. ‑ Driving over obstacles (e.g. pothole/ threshold/ speed bump/ gully) at an inappropriate speed. 2. Corrosion/ water ingress through a damaged boot (see attachment). ‑ Cracks (1) ‑ High pressure cleaner (2) ‑ Animal bite (3) See various examples listed in the attachments for examples of outside influence. Remedy Remove boot clamps closest to steering gear housing on both left and right (as seen in "Steering Rack Boot Clamp Location"). Pull back boot and inspect for rust, broken end stops, water, or any other anomalies. Replace electric steering. Note: Steering gears replaced due to outside influence or damage must not be claimed under warranty!
LI54.71-P-079104
Service Bulletin/Repair Instructions
Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a speed limit ("‑ ‑"). • Flashing when current vehicle speed is under speed limit. • Flashing between US speed limit symbol and European speed limit symbol. NOTE: • Verify that the concern falls under one of the attachment videos. If not, then it is outside of the scope of this LI. • This also does not cover "Traffic Sign Inoperative" messages on the instrument cluster. Cause There are two identified reasons for this concern: 1. Country code information stored incorrectly at a particular geographic latitude range. 2. Incorrect reference data when the vehicle is started and a GPS signal is not immediately available. Remedy Update head unit software to latest version and the re‑check function in the same location. If vehicle is still exhibiting one of the symptoms as described exactly as in the complaint section or as shown in the video attachments, open a TIPS case to the Body/Chassis/Entertainment inbox with the following: • Video of the concern. • Exact location (latitude and longitude is best)
CL - Tank Leak Detection
Warranty Program/Extension
Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA is extending the warranty coverage for the Diagnostic Module for Tank Leakage Detection ("DMTL") on your vehicle from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 15 years/150,000 miles (whichever occurs first). This applies to the vehicle regardless of ownership. Why the Warranty extension? On certain Model Year 2018 - 2024 A / C / CLA / CLS / E / G / GLA / GLB / GLC / GLE / GLS / GT / S / SL Mercedes-Benz vehicles, under certain circumstances, the DMTL may trigger erroneous Diagnostic Trouble Code ("DTC") entries that may result in the illumination of the Check Engine Malfunction Indicator Lamp ("MIL"). Any repairs under this warranty extension must be performed by an authorized Mercedes-Benz dealership. • If your preferred authorized Mercedes-Benz dealership performs a diagnosis and confirms that your vehicle has the issue, the repair will be covered under this extended warranty and performed at no cost to you. • This extended warranty does not apply to any other components or conditions beyond the ones mentioned above, and standard warranty terms apply, including the exclusions with respect to extra expenses, as identified in the Service and Warranty Information booklet.
LI82.85-P-079088
Service Bulletin/Repair Instructions
Complaint The following most common complaints may be observed: • Brief connectivity interruptions when using Apple CarPlay over Wi-Fi • Audio cuts out • Device not recognized • No operation possible Cause There are multiple possible causes for an iPhone disconnecting from a vehicle’s head unit while using Apple CarPlay. These include hardware, software, and environmental factors: Environmental Interference External Sources: • Passing under toll bridges, driving near airports, or areas with heavy electronic interference (e.g., as described in LI82.85-P-076157) can cause connection drops. Cellular Networks: • Interference from nearby cell towers operating on similar frequencies (usually 2.4GHz or 5GHz) can disrupt the signal. Storage Location: • Keeping your phone in a handbag or surrounded by other objects inside the vehicle can create physical or electronic interference. Device and Software Issues Head Unit Software/Hardware: • Outdated firmware, bugs, or hardware faults in the vehicle’s head unit can prevent a stable connection. iPhone Software/Hardware: • Similar issues in the iPhone, including buggy iOS updates or hardware problems, may affect performance. Reset or Reboot:• Automatic rebooting or resetting of either the head unit or the iPhone will temporarily disrupt CarPlay. Connection and Settings Wired Connections: • Faulty Cable: A damaged or poor-quality USB cable can cause intermittent or total loss of connection. • USB Port Issues: Dust, debris, or physical damage in the USB port of either the head unit or the iPhone can also lead to disconnects. Wireless Connections: • Intermittent Bluetooth/Wi-Fi: Unstable wireless communication (Bluetooth/Wi-Fi) can frequently break the Car- Play connection. Power Management: • Battery Saver Mode: Enabling low power mode may restrict background processes, affecting CarPlay. • Vehicle’s Electrical System: Unstable power delivery from the car’s battery or electrical interruptions can cause the head unit to malfunction. Phone & App Configuration Phone Settings: • Incorrect or conflicting settings (especially Bluetooth or Wi-Fi) on your iPhone can interfere with the CarPlay link. • Third-Party Apps/Profiles: • Installed apps or configuration profiles may conflict with CarPlay’s operation. • Native apps are apple maps, apple music, audio books, apple news, podcasts, messages and phone. All other apps are considered third party apps. App Conflicts: • Running conflicting apps that require similar system resources as CarPlay can cause instability. Mobile Data Plan: • Streaming from online sources without sufficient mobile data can result in lost connectivity. Other Factors Heat & Overheating: • If either the phone or the head unit overheats, they may disable certain functions to prevent damage, leading to disconnection. User Actions: • Accidentally disconnecting the device in settings, or physically moving or bumping the phone or cable, may disrupt the connection. Remedy FUP6 (E605.8) software has been released for the following chassis: 118, 177, 243,247,206,254,167,294,295,296,223, 297. Flash available software for the head unit and test for function. The LI will be updated once available for the remaining chassis. If the complaint remains after the SW update please continue with the steps below. Guided Diagnostic Path for Apple CarPlay Connection Issues: Please follow the steps below to systematically diagnose and resolve CarPlay concerns:Update Devices: • Ensure the iPhone is updated to the latest available iOS version. • Ensure the vehicle’s head unit is updated to the latest software version available. Isolate the Issue: • Check whether the symptom persists with another iPhone running the latest iOS version. • Test both wireless and wired CarPlay connections: • Does the issue only occur with wireless CarPlay? • Does the wired connection to the phone function correctly? Further Troubleshooting Steps: • Reboot the iPhone. See attachment for further instructions.
LI01.20-P-080884
Service Bulletin/Repair Instructions
Complaint Oil leaks found on M176 or M177 engines diagnosed to be from the cylinder head cover area Cause Unknown (under investigation) Remedy If oil leaks are found at left or right cylinder head cover area please collect the following information and open TIPS case. 1. Collect photos of the leak 2. Include close up and wide view photos to accurately represent the location 3. Include if the vehicle has a "check oil level" Light on in the cluster or fault codes 4. Check oil level as per WIS to verify level and calculate possible oil loss from the leak 5. Identify and communicate the severity of the leak and provide supporting documentation 6. Open a TIPS case with the above information and submit to the Powertrain team for processing
LI54.65-P-080132
Service Bulletin/Repair Instructions
Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics. Cause Various root causes Remedy See attached diagnostic guide.
LI82.62-P-078631
Service Bulletin/Repair Instructions
Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary, create a TIPS case with an informative video as an attachment. Information: Please refer to this document in the warranty claim and, after completing diagnosis, select the damage code corresponding to the component part that caused the problem. • If the noise stops when the door trim is removed, please proceed in accordance with LI72.10-P-067691. Information: In this case, do not use a damage code for the speakers in the warranty claim!
LI27.00-P-080840
Service Bulletin/Repair Instructions
Complaint Mercedes-Benz USA is currently experiencing limited availability of transmission fluid specification ATF 236.17 due to a global supply constraint. 236.17 ATF 1L and 5L (PNs: A002989060312 and A002989060313) bottles are out of stock or in limited supply at Zep. This LI has been created with the following intention: - Provide dealers with additional workshop-focused guidance regarding the current ATF 236.17 supply constraint and the planned introduction of ATF 236.18. - Supplement existing communications and address common workshop questions related to maintenance, repairs, and fluid applicability. - Provide technical clarification and practical workshop guidance during the temporary supply constraint period. Dealers should continue to reference the latest News Channel Updates (NCUs) for the most current information regarding availability, ordering processes, supply status, and other related updates. Cause Damage to the Shell production facility has resulted in 236.17 oil supply being reduced to 50% of normal output until the end of 2026. Remedy Please first check Latest NCU updates for latest detailed information. Please continue placing orders through Paragon as normal. Supply is expected to remain reduced and allocation measures are currently in place. We ask for your patience through this restricted supply period. Most orders will be filled in the order in which they were received, as supply is replenished. Those dealers with zero inventory, and pending orders, will receive priority. We expect supply to be stabilized in September 2026. Approved Fluids: Only use transmission fluid from the approved list found on the Mercedes-Benz Operating Fluids website. Non-approved fluid will result in mechanical damage to the transmission and must be avoided. https://operatingfluids.mercedes-benz.com/sheet/236.17 Approved fluids can be claimed as follows if there is no Mercedes-Benz part number: Part # ATFSUB1L - TRANSMISSION FLUID 1 LITER ATFSUB5L - TRANSMISSION FLUID 5 LITER Dealerships with Zero Inventory AND Grounded Vehicles: If a vehicle is currently grounded for repair at your dealer due to no 236.17 inventory, we may be able to expedite your order. Please open a StarSupport ticket including the following information: (Parts Related Inquiry>National Accounts>Zep) • LI document number • Short explanation of repair needed for grounded vehicle • Current days down of RO Maintenance and Service Interval Guidance Published maintenance intervals remain unchanged. Vehicles should continue to be maintained in accordance with the applicable maintenance schedule. This LI does not revise or extend any published maintenance interval requirements. If all required parts and materials are not available prior to scheduling or beginning a transmission service, dealers should consider postponing routine preventative transmission maintenance until the necessary parts become available. For vehicles that have not yet reached the applicable maintenance interval and do not exhibit transmission-related concerns, there is no need to recommend preventative transmission services prior to the scheduled maintenance interval. When evaluating whether routine transmission maintenance can be deferred until parts become available, dealers should consider: • Overall vehicle condition • Vehicle usage and operating conditions • Presence of transmission-related symptoms or customer complaints • Customer expectations and vehicle operating requirements • Availability of required parts and materials Introduction of New Fluid Specification 236.18 Mercedes-Benz is currently preparing the introduction of ATF 236.18 as an additional approved transmission fluid solution for applicable NAG3 transmissions. At the time of publication of this LI, ATF 236.18 is not yet available for dealer ordering or workshop use in the U.S. market. See attachment for further details.
EW - DMTL
Warranty Program/Extension
This NCU replaces the prior NCU issued on May 15, 2025, and contains additional MY 2023 and MY 2024 vehicles which are highlighted below. In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (“MBUSA”) is extending the warranty coverage on the Diagnostic Module for Tank Leakage detection (DMTL) in certain Model Year (“MY”) vehicles listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 10 years/120,000 miles (vehicles certified as LEV II) and 15 years/150,000 miles (vehicles certified as LEV III), whichever occurs first, for the following condition: •Under certain circumstances, the DMTL may trigger erroneous Diagnostic Trouble Code (DTC) entries that may result in the illumination of the Check Engine Malfunction Indicator Lamp (‘MIL’).
LI20.10-P-072886
Service Bulletin/Repair Instructions
Complaint Check Engine Light ON with DTC P012800 "The Coolant Temperature is Below the Specified Temperature" active and/or stored in the ME (N3/10). There are no drivability concerns related to this complaint. Cause Root cause varies Remedy Prior to performing any repairs for this complaint: With a cold engine, pressurize the high temp coolant circuit and while it's under pressure, release the cap on the low temp coolant circuit and check if the pressure drops right away or not. If the pressure drops, the lower coolant hoses are swapped. Correct this, fill, bleed and test drive the vehicle. If the complaint returns, then continue with the steps below. IMPORTANT: Use VMI to check for the following emission extended warranty –> Engine Thermostat (incl. software update) MY19-23, Various Models and Platforms (167, 190, 205, 213, 217, 222, 223, 232, 253, 290, 463) If the vehicle is covered under the above emission extended warranty, please perform steps outlined in the accompanying NCU prior to those outlined in this document. If vehicle is not covered under the above emission extended warranty or the complaint continues to occur, then proceed as follows: Check for available software updates to the ME (N3/10). If updated software is available, perform the update, clear the DTC and the perform each of the "WARM START" and "COLD START" test drives listed below twice. If the code does not re-appear then release the vehicle. If there is no new software available OR the DTC returns after the test drives then perform the following steps: • Drain the coolant through a fine mesh sieve and check for signs of debris. Additionally, inspect the coolant reservoir for debris. If any debris is found take pictures of the reservoir and the mesh filter and "flush" the system at least 2-3 times to clear as much of the debris as possible • Replace the thermostat and bleed the system as outlined in AR20.00-P-1142-04A, evacuate the system for 20-30 minutes instead of the 5 minutes specified in step 22 • NOTE: Please use all the tools specified in the AR document. The DTC will continue to populate if the circuit is not properly bled • NOTE: There are two valid thermostats to choose from in the parts section of this LI. Please verify which PN is applicable for the vehicle being worked on via XENTRY Parts Information • After bleeding the system clear the DTC and perform each of the "WARM START" and "COLD START" test drives listed below twice. If the DTC does not reappear after the tests, release the vehicle If the ME (N3/10) software is up to date, the thermostat has already been replaced, and the complaint persists open a TIPS case and attach the following documents: • Initial quick test • ME (N3/10) control unit log • The results of an R48 test from a “yes” response and from a “no” response • Pictures of the coolant reservoir and mesh sieve (mentioned above) WARM START · Begin with the engine coolant temperature at approximately 50 degrees C · Activate the AC system, if defrost is not in use open the windows · Drive the car normally until a coolant temperature of 75 degrees C is achieved · Depress the accelerator pedal 50% for ~5 seconds (partial acceleration) · Let off the accelerator pedal and let the car coast for ~10 seconds · Continue to drive the car normally COLD START · Drive for ~7 miles (normal driving) · Shut off the engine in a parking lot (or similar), wait 30 seconds, then restart and continue driving · Depress the accelerator pedal 50% for ~5 seconds (partial acceleration) · Let off the accelerator pedal and let the car coast for ~10 seconds · Continue to drive the car normally
LI27.60-P-080169
Service Bulletin/Repair Instructions
Complaint Complaints of a harsh 3to4 upshift Cause Lost torque adaptation values and negative fill times of clutch K27. Remedy Short-term measure: Note: All steps—including resetting the learned values and performing the stationary adaptation—must be completed to resolve the concern. 1. Perform IPR and follow the provided instructions. 2. Perform software update if available (IPR will automatically check for status of software availability) 3. Perform Special Function "Resetting of learned values 'Deceleration Mode'" (VGS > Special Procedures > Special procedure > Resetting learned values Deceleration mode) 4. Complete the standstill adaptation Long-term measure: A software resolution has been released for several model years with software levels 22A.3 (n3g222aa03ub) and 22A.4 (n3g222aa04ub). - Check VGS control unit log or eeprom .txt file for "Program Status" to determine your vehicle. Software is in the approval process for MY23 with 22A.3. Once the software is released, an update on availability will be added in IPR and in this LI document. As of 6/8, software released for the following model years: MY26 with 22A.4 A001 902 25 21 >> A001 902 96 21 MY24+MY25 with 22A.3 A000 902 26 99 >> A001 902 97 21 If the vehicle software level is not 22A.3 or 22A.4: A software resolution will not be created for these vehicles, please follow the short term solution to alleviate the concern.
LI40.10-P-059248
Service Bulletin/Repair Instructions
Complaint Crackling and cracking noise from the outer wheel on the front axle when cornering Cause The noise is generated by a micromovement on the contact surface between the rim and the brake disk (wheel bolt group) and may be intensified by potential soiling. The more lightweight rim (AMG forged rim) transmits the noise louder; in the case of cast rims, the noise is generally not perceptible. This is not a technical defect, but rather a complaint concerning comfort. Safe operation of the vehicle is ensured at all times. Remedy Important note: The operations described below do not represent a permanent remedy in every case. The noise may reoccur again after an indefinite period of time; sanding the rims with abrasive media multiple times is not permissible. Only cleaning using the Hazet tool 4960-160 (recommendation) can be performed without any concerns each time the wheel is changed or if the complaint reoccurs. Replacing the parts (rim, wheel bolts, wheel bearings, wheel hub, brake disk) is not expedient in the event of this complaint. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Clean the components of the wheel bolt connection according to the WIS instructions Sand down the rim and brake disk bowl by performing the following steps: • Manually sand rim (old design only) in area of water drain bores (Figure 1; item A), approx. 1.5 cm left and right of water drain bore (Figure 2) Note: Use abrasive paper with grit size 80. The grooving in this area should no longer be visible (sand down approx. 0.1-0.2mm) • Also sand brake disk bowl using emery cloth or abrasive paper with a grain size of 120 • For vehicles equipped with the AMG ceramic brake system (B07), abrasive paper may not be used for cleaning on the brake disk side Note: Do not use any cleaning agent when cleaning on the rim side. Cleaning using abrasive paper with a grain size of 80 will suffice. Do not apply any grease, lubricant or paste after cleaning The brake disk bowl should be "bare metal" in the area of the imprints made by the hole (Figure 3)
LI35.30-P-058566
Service Bulletin/Repair Instructions
Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to cracking of the microweld between the wheel bearing inner race and the joint housing of the side shaft. Note: The collar nut must always be replaced after being loosened. See also LI33.20-P-078406 Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove side shafts 2. Clean contact surface A (see image file in attachment "Outer joint housing before") before coating with Molykote, using "spirit" (free of dust and grease) 3. Coat contact surface A (see image file in attachment "Outer joint housing after") with Molykote and leave to dry for "one hour" in removed condition 4. Reinstall side shafts Note: Before using the antifriction coating (Molykote), stir it or shake it thoroughly for (at least 1 minute).
LI33.20-P-078406
Service Bulletin/Repair Instructions
Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements and/or Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/ maneuvering. Sound file attached for comparison. MUST match noise for proper diagnosis. NOTE: Steering functionality is not affected. Cause Contact area between wheel bearing and steering knuckle. See also: LI35.30-P-058566 (Throttle Lift-Off Noise - Rear) LI33.30-P-056665 (Throttle Lift-Off Noise - Front) LI40.10-P-059248 (Wheel cracking noise when cornering) Remedy 1. Perform Operation A and evaluate by testing vehicle. 2. If noise is still present after re-testing: • If 192/232 chassis, verify FIN is in the listed range below in "Operation B" and perform. • If not 192/232 chassis or vehicle is a 192/232 not in the listed FIN range, additional verifications of where the noise is coming from are needed. Use multiple channel NVH method to narrow down location. Verify the LI's listed above were completed or if there are other similar noises associated with the chassis (Example: 192/232 also has under panel noises and an associated LI). Operation A: 1. Clean contact surfaces of wheel bearing and steering knuckle with brake cleaner as seen in the attached pictures. NOTE: The front area of the wheel bearing and the seals must not come into contact with the cleaner, otherwise, the sealing rings will be damaged. 2. Clean threads of wheel bearing mounting. 3. Thinly coat contact surfaces of wheel bearing, steering knuckle, and axle mating face with Molykote (annular joint grease). See the attached steering knuckle and wheel hub pictures for reference. NOTE: Axle mating face greasing is also covered in LI35.30-P-058566 and LI33.30-P-056665. Operation B (Only applies to 192 and 232 in listed FIN range): Only affects vehicles up to FIN end number: • Model series 192: xxx xxx xx 002 876 • Model series 232: xxx xxx xx 022 312 1. Replace steering knuckle. 2. Wheel bearings do not need to be replaced.
PSL-NCU Return Parts 7/3
Other
Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, July 23rd, 2026. After July 23rd, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return. Please include a copy of this NCU as your authorization to return these parts. This procedure will not affect your return allowance. All returned parts will be replaced in accordance with the chart provided below.
LI54.30-P-080649
Service Bulletin/Repair Instructions
Complaint General information on the operation of the PRE-SAFE® Impulse system: The PRE-SAFE® Side Impulse system is a preventive, i.e. pre-collision occupant protection system. The task of the system is to provide additional protection to vehicle occupants when there is a risk of a side impact. It is not a restraint system component in the conventional sense and does not contain an detonator. A potential side-impact situation is detected by radar sensors. If the system detects an existing likelihood of a side impact, a reversible air cushion in the outer seat side bolster is briefly inflated by opening a valve. The resulting pulse preemptively increases the distance between the door and the occupant in order to move the occupant out of the danger zone. If the system has been activated, the following message appears on the instrument cluster: PRE-SAFE® Side Impulse inoperative. See Operator's Manual. Note: After system activation, diagnostic entry B1B3713 or B1B3813 is marked as active and stored in the ORC223 (N2/5) control unit. Cause After activation of the “PRE-SAFE® Side Impulse” system, the function is no longer available. Remedy Please check the tight seating and possible damage of the radar sensors B29/11 or B29/12. Then replace the gas generator on the affected side (R12/65 or R12/66). After replacing the gas generator (R12/65 or R12/66), please perform commissioning and SCN coding of the radar sensors B29/11 or B29/12 to ensure they are up to date. Note: In principle, it is not necessary to replace the air cushion in the "PRE-SAFE® Side Impulse" system, as it is designed for multiple activations (up to 10). Exception: After deployment of the sidebag (e.g., following a crash), exchange (air cushion with gas generator) of the "PRE-SAFE ® Impulse Side" is required in all cases.
ANN - S/223_EQS/297
Other
For awareness, after SW update of control unit, IC223, on models 223 and 297, seat belt lamp and chime remains on. Thank you for your patience while we find a solution.
PSL-NCU Return Parts 6/19
Other
Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, July 9, 2026. After July 9th, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return. Please include a copy of this NCU as your authorization to return these parts. This procedure will not affect your return allowance. All returned parts will be replaced in accordance with the chart provided below.
LI00.20-P-078424
Service Bulletin/Repair Instructions
Complaint The remaining time shown on the instrument cluster in the workshop menu (days to next due service) is implausible (>365 days) for the following conditions: • for the date of the vehicle handover • or the last conducted and confirmed Service A/B Cause Case 1: Observe the following on vehicles with a disconnected on-board electrical system battery (12V/48V): • The period in which the on-board electrical system battery is disconnected cannot be counted by the maintenance computer. • As soon as the on-board electrical system battery is connected again, the maintenance computer automatically starts counting without making a correction to the remaining time (days until the next service). Case 2: If a disconnected on-board electrical system battery (12V/48V) can be ruled out as the cause, it is possible that: The daily turnover counter inside the electronic ignition lock (EIS) has experienced memory loss. This anomaly was detected in the EIS software from modification year 2022 onward. To do this, please check the plausibility of the daily turnover counter as follows: If "TUSZ Assyst Plus" < the actual days since "Handover Date/DAY/Month/Year," then proceed to remedy for case 2. Information: A variation of 2-3 days is still considered plausible. If "TUSZ Assyst Plus" is plausible, or if a remaining time of 365 days is permanently displayed, check whether the vehicle has been handed over. These types of cases have different causes. (The respective values are included in the maintenance data in the control unit log of the instrument cluster). Remedy For case 1: When the on-board electrical system battery is disconnected, this period must always be taken into account for these vehicles, and the following condition must be met for a correct calculation to be made: • (A): The number of days from the "date of vehicle handover or last service A/B" to the "date on which the vehicle arrived at the workshop." • (B): Remaining time (days until the next service, as shown in the instrument cluster). • (C): Days on which the on-board electrical system battery was disconnected. The formula requires the following condition to be complied with. 365 - (A) [days] = (B) - (C) [days] For case 2: If the on-board electrical system battery (12 V/48 V) was not disconnected and the remaining time shown in the customer or workshop menu on the instrument cluster (days until the next service) is implausible in terms of the date of the vehicle handover or the last performed and confirmed service A/B, or the condition in the formula was not met, the service can still be performed and confirmed. For vehicles arriving more than 90 days after the service due date, the DSB service history can only be corrected by re-entering "Vehicle regularly serviced." A software fix for the EIS (electronic ignition lock) is currently in planning. The objective is to have a remedy available for 2026. Until the remedy is available, it is advisable to inform the customer that the next service is due again after 365 days at the latest.
LI07.61-P-080241
Service Bulletin/Repair Instructions
Complaint CEL ON with DTC P061197 "The control unit 'fuel injector' has a malfunction (output stage fault of control unit 'combustion engine'). The system function is restricted." active and/or stored in the ME (N3/10). There are no drivability concerns related to the complaint. Cause ME (N3/10) software Remedy Updated ME (N3/10) software is available for affected models. Below are the remedy software object numbers for each affected variant: MY24 - A1769037801 MY25 - A1769037901 MY26 - A1769038001 Once the ME software is updated: clear all DTCs, reset self adaptation of mixture, and perform an AMG adaptation drive.
PSL-NCU Return Parts 6/05
Other
Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, June 25, 2026. After June 25th, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return. Please include a copy of this NCU as your authorization to return these parts. This procedure will not affect your return allowance. All returned parts will be replaced in accordance with the chart provided below.
LI88.85-P-080644
Service Bulletin/Repair Instructions
Complaint The Maybach emblem at the C‑pillar is detached from the vehicle Cause The adhesive bond has failed Remedy The adhesive has been optimized. Perform replacement of the Maybach emblem on both sides of the vehicle. Note: The old part numbers include the updated adhesive and may be used if the newer parts are not available.
LI46.15-P-070510
Service Bulletin/Repair Instructions
Complaint Noises from the area of the steering column. - Creaking - Squeaking - Chattering - Humming - Grinding Cause At present, there are no known noise problems with the steering column. Remedy Check surrounding area of the steering column for possible noises. • Instrument panel support • Steering column switch module NOTE: Occasionally to verify complaint, the steering column/vehicle needs to be in direct sunlight or hot conditions for a few hours. If noise only occurs when adjusting the steering column via electric actuation, please perform: 1. Disassemble bellows of steering column tube module. 2. Move steering column entirely out and entirely down. 3. Grease steering column on all pivot points including, but not limited to, green-marked positions with a suitable brush (find pictures in attachment). 4. Move column up 1/4 of the way and grease again. 5. Continue until upper limit stop is reached. 6. Then move steering column adjustment in all directions from limit stop to limit stop several times to work in the grease. 7. If noise does not resolve, wipe excess grease off and perform greasing and movement to limit stops in all directions again. For all other noises or if the above does not resolve, create a TIPS case Body, Chassis, and Entertainment inbox. Attach a detailed description of the noise complaint, images, and a recording of the noise. Include detailed items of the following: • Position of height and longitudinal adjustment when the noise occurs • If possible, locate affected component part on steering column • State any change in the noise when steering column component parts are touched (e.g. spring, etc.)
PSL-NCU Return Parts 5/22
Other
Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, June 11, 2026. After June 11th, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return. Please include a copy of this NCU as your authorization to return these parts. This procedure will not affect your return allowance. All returned parts will be replaced in accordance with the chart provided below.
LI54.10-P-080602
Service Bulletin/Repair Instructions
Complaint 48V battery (A66) part numbers A 000 982 78 24, A 000 982 57 30, A 000 982 88 31, A 000 982 50 32, A 000 982 87 32) may trigger a fault message ("48 V Service Required" with fault codes P0ADA91, P0ADE91, P0AA100, P0ADD00 or P0AA000) in the instrument cluster. This fault message may prevent the 48 V battery contactors from opening automatically if the 12 V power supply is interrupted. In this case, the 48 V on-board electrical system, including connected components, remain energized. Cause The contactors of the 48 V battery do not open, resulting in residual voltage (> 3V) even when the 12 V battery is disconnected. Remedy When working on the 48 V on-board electrical system or connected components, ensure the component being repaired is de-energized in the 48 V system after disconnecting the 12 V ground line. Use a DVOM and ensure that there is less than 3V across the 48V terminals. • If the voltage is less than 3V, the repair can be continued in accordance with the WIS documentation. • If the voltage is greater than 3V, disconnect the ground line from the 48 V on-board electrical system battery and secure from contacting any ground points of the vehicle before continuing the repair. Once the work has been completed, follow the procedure for clearing the 48 V battery fault message as specified.
LI91.16-P-073576
Service Bulletin/Repair Instructions
Complaint • Driver's seat and/or front passenger seat cannot be adjusted. • Not possible to adjust front seats to memory preset. • Head restraints of front seats cannot be adjusted. • Cannot move to chauffeur mode/reclining seat position. Fault identification: → Create log of seat control unit (both conditions must be met) 1. Fault B1F7E54 "Head restraint inclination adjustment not normalized. No calibration." stored in fault memory. 2. Value "0C" present in seat control unit log service 0X220239 (see attachment "seat control unit log"). If fault B1FBB15 "Malfunction in 'Head restraint inclination' switch. There is a short circuit to positive or an open circuit." is also stored in the fault memory, the cause might also be due to the wiring or terminal contacts. Cause Faulty head restraints Remedy Replace the affected head restraint
LI82.30-P-059239
Service Bulletin/Repair Instructions
Complaint There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper blades squeaking, chattering, shuddering B: The windshield is not wiped completely (streaking) C: During the downward movement water is pulled back onto the windshield from the A-pillar (Figure 1) D: After windshield cleaning, water keeps spraying onto the windshield for several wipe cycles (Figure 2) A1: The windshield and wiper blades are contaminated with residues from car washing facilities, identifiable by the water beading. The resulting differences in the friction values between the wiper blades and the windshield can excite the wiper blades to vibrate. Note: It is mostly wax residue from the washer system, but also water-repellent nano-particle coating for paint and/or silicone-based washer fluid, that could cause this problem. A partially dry windshield also has different friction values, which can likewise result in squeaking of the wiper blades A2: The wiper blades are worn by mechanical damage (wiper lip damaged by ice or insect debris, or deformed by long periods of disuse). A3: Incorrect angle of incidence of the wiper arms to the windshield. Because of this, the rubber lip of the wiper blade may not flip over at the reversal point. Cause B: B1: Wax/ dirt residues on the windshield B2: Wiper blades deformed or worn B3: Downforce of wiper arm not OK (Figure 3) Cause C: Water is pulled back onto the windshield by the differential pressure created as the wiper arm moves downwards. Cause D: Washer water collects in the fastening of the wiper blade and is blown onto the windshield by the airstream over several wipe cycles. Note and supporting information: Wiper blades are wear parts which, even when "not used" for long periods (kept in park position), may become permanently deformed and damaged. Further stresses on the rubber wiper blade arise due to various environmental influences which progressively change the effectiveness of the rubber wiper blade and accelerate the aging process. Due to the natural aging process and wear, the wiper blades should be replaced twice a year, preferably in Spring and Fall (see operator's manual). Remedy Remedy A: A1: Cleaning entire windshield with A 000 986 40 71. A2: Checking water's flow behavior after windshield has been cleaned (see Video 1). If, after cleaning, there are still areas with water beading, then the cleaning process must be carried out again until a rejection reaction is no longer present. • Note: On the vehicle in the video (Video 1), water still beads on the bottom left of the windshield. The windshield is still not properly clean, even though it appears to be clean. The windshield is only properly clean when there are no more areas on the windshield where water beads. A3: Replace wiper blades with genuine wiper blades. Important: Only exchange wiper blades if windshield no longer has water-repellent areas Note: Replacement of wiper blades is not covered under warranty and can be replaced at the expense of the customer. Remedy B: B1: Clean windshield with intensive cleaner A 000 986 40 71. Important: Do not clean the wiper blades otherwise the graphite coating will be damaged. B2: Replace wiper blades with genuine wiper blades • Note: Replacement of wiper blades is not covered under warranty and can be replaced at the expense of the customer. B3: Check the wiper arm for excessive resistance in the bearing. Restore mobility or replace wiper arm if necessary. Remedy C: Problem inherent in design for which there is no technical remedy. Exception: X204 up to 02/2014. In these vehicles, it is possible to install the design configuration of vehicles as of 02/2014. This includes wiper arms (styled arms) with improved behavior in this respect. It is also necessary to replace the wiper blades because the styled arms feature a Top Lock connection (previously Side Lock).
LI91.29-P-080554
Service Bulletin/Repair Instructions
Complaint One or more seat functions are restricted or inoperative. This may include: • Seat memory • Automatic seat adjustment • Easy Entry/Exit • Head restraint presetting • Collision avoidance with bench seat at rear • Actuation by other vehicle systems Seat normalization is missing, and fault code B228678 – “The control unit calibration has been lost or was not performed. Adaptation or adjustment is not correct.” is stored in the seat control unit. Additional fault codes may also be present. Cause The condition is currently under investigation. Remedy Process any additional faults first. • If a clear cause is found (for example, a failed component, wiring issue, or connector concern), repair that issue as required. If no root cause can be determined: • Do NOT perform Initial Start-up, Software Update, or Normalization of the Control Unit • Create a control unit log for the affected seat control unit. • Open a TIPS case to the Body/Chassis/Entertainment inboxand attach the control unit log for further analysis.
PSL-NCU Return Parts 5/15
Other
The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, June 4, 2026. After June 4th, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return. Please include a copy of this NCU as your authorization to return these parts. This procedure will not affect your return allowance. All returned parts will be replaced in accordance with the chart provided below.
LI00.01-P-078887
Service Bulletin/Repair Instructions
Complaint The intent of this document is to provide workshops with helpful technical reference language. • Commonly used acronyms in LI's and TIPS cases. • Control unit names, numbers, and how to identify. • Network/wiring architecture groups to baumuster quick reference. • Platform to baumuster quick reference. Cause Information only Remedy Acronyms: • AV = Actual Values • CPR = Car Package Release (For MB.OS) • CU = Control Unit • CUL = Control Unit Log • DTC = Diagnostic Trouble Code • E-Stand = Fresh-up head unit boot software (found in head unit control unit log) • FUP = Fresh-up • FW = Firmware • HSVL = High Speed Video Line • HU = Head Unit • HW = Hardware • IPD = Injector Performance Data • ISU = Initial Start Up • LVDS = Low Voltage Differential Signal • NAG"x" = New Automatic Gearbox ("x" is the generation number, example: NAG3) • NSFT = Not Safe For Transport • MOPF = Model Facelift (Ex: 167 MOPF) • PiH = Plug-in Hybrid • SA Code = Sonderausstattungscode (Option Code) • SCN = Software Calibration Number • SW = Software • TCU = Telecommunication Control Unit (Hermes/Ramses/Etc...) • QT = Quicktest • XD = XENTRY Diagnosis Control Unit Identification: Refer to the attachment "Control Unit Nomenclature" for location of each. • Control Unit Name • Control Unit Number • Control Unit Short name • Control Unit Diogenes ("dy-oj-uh-neez") name - Control unit variant/family. Network/Wiring Architecture to Baumuster Quick Reference: Star 1 • 117, 156, 246 (MFA) • 166, 176, 221, 242, 246, 292 • 906 Star 2 • 205, 213, 238, 253, 257, 290 (MRA) • 117, 156, 246 (MFA) • 118, 177, 243, 247 (MFA2) • 167, 222, 292, 463, 465 • 907 Star 3 • 294, 295, 296, 297 (EVA2) • 206, 214, 223, 236, 254 (MRA2) • 192 and 232 (MSA) Star 3.5 • 174 • 178 Platform to Baumuster Quick Reference: MRA = "Mercedes-Benz Rearwheel Architecture": • 205 • 213 • 222 • 238 • 253 • 257 • 290 MRA2 = "Mercedes-Benz Rearwheel Architecture - Generation 2": • 206 • 214 • 223 • 236 • 254 MFA = "Mercedes-Benz Frontwheel Architecture" • 117 • 156 • 246 MFA2 = "Mercedes-Benz Frontwheel Architecture - Generation 2" • 118 • 177 • 243 • 247 EVA1.5 = "Electric Vehicle Architecture" • 243 EVA2 = "Electric Vehicle Architecture - Generation 2" • 294 • 295 • 296 • 297 MSA = "Mercedes-Benz Sport Architecture" • 192 • 232 MMA = "Mercedes-Benz Modular Architecture" • 174 • 178
LI72.20-P-080324
Service Bulletin/Repair Instructions
Complaint Trunk lid lock may not unlock when the trunk lid handle (S88/8) is operated The trunk lid can still be opened using the following methods: • HFA (Hands-Free Access) • Unlocking and opening the trunk from inside with the emergency release • Trunk lid remote operating switch at the drivers door • Press and hold the "Trunk lid" button on the SmartKey Cause Under analysis Remedy Check switching signal of trunk lid handle (S88/8) during operation and document results by providing print out of actual values. Submit a TIPS case with fault description and observations. • send to the Body/Chassis/Entertainment inbox.
LI46.80-P-079280
Service Bulletin/Repair Instructions
Complaint Rattling/knocking noise from the rear axle steering is audible when driving on rough terrain or cobblestones. Excessive radial play (green arrows) between the screw-on stud (1) and the plain bearing (2). Cause Diverse functional play in the rear axle steering. Remedy 1. Detach underfloor paneling under rear axle steering. 2. Remove heat shield. 3. Remove large clamps from left bellows. 4. Open small clamps on left using a suitable tool and slide to the side. 5. Slide bellows to the side. 6. A second person sits in the vehicle and, with the drive activated and the automatic transmission in the N position, turns the steering to left lock. Caution! Risk of trapping when steering at the same time! Do not move steering wheel during operation steps 7 and 8! 7. Remove grease from screw-on stud using a clean, lint-free rag. => Up to the area where the stud enters the bearing! Then completely degrease the threaded stud using a lint-free cloth soaked in a suitable assembly cleaner (e.g., A 000 986 56 01); if necessary, clean hard-to-reach areas with the assembly cleaner. => Up to the area where the stud enters the bearing! Important: The surface must be thoroughly cleaned and free of grease! 8. Then apply Hylomar (A 001 989 25 20 09) around the degreased screw-on stud using a new brush. => Up to the area where the stud enters the bearing! 9. Move steering wheel from end stop to end stop 1-2 times. Then, turn the steering to the left lock again. Warning! Risk of trapping when steering at the same time! 10. Apply Hylomar a second time. 11. Move steering wheel from end stop to end stop 1-2 times. Then, turn the steering to the right lock. Warning! Risk of trapping when steering at the same time! 12. Bellows installation: Coat contact surfaces of bellows and rack-and-pinion steering lightly with Renolit (A094 989 38 00). When doing so, ensure that the grease is underneath the edges of the bellows. Replace large clamps (A 001 995 15 35). The small clamp can be reused. 13. Repeat operation steps 3 to 5 on the other (right) side. 14. Then repeat operation steps 7 to 12 for the screw-on stud on the other side. 15. Attach heat shield. 16. Attach underfloor paneling. 17. When relocating the vehicle on the premises, please use Snow Chain Mode through the head unit to limit speed so Hylomar application stays in place. 18. Leave the Hylomar to dry for approx. 90 minutes. Note: Deactivate Snow Chain Mode after stopping the vehicle! 19. Then perform a test drive. If the remedies are not effective => please create a TIPS case to the Body/Chassis/Entertainment with the following information: • Complete history of the rear axle steering with mileage and repair date along with what was completed (application of Hylomar, replacement of the rear axle steering). • Clear video or audio file of the complaint as perceived by the customer (without amplification via Chassis Ear or similar devices and not on the shock absorber test stand).
LI46.10-P-079374
Service Bulletin/Repair Instructions
Complaint Customer concern for ESP/Brake or Steering yellow instrument cluster message AND C220564 in the N80 Steering Column Control Module (Valeo Parts only). To check which supplier steering column module is present in the vehicle, see attachment "Supplier Identification". Cause Triggered due to communication related software timing. Remedy New software A2239026336. Update N80 (Steering Column Module) to at least target software A2239026336, clear codes, and ignition cycle the vehicle. If DTC is still present, re-flash N80 and clear DTC's. Is DTC still present? No --> Bus sleep the vehicle. After bus sleep check for DTC again. If DTC is not present, release vehicle. Yes --> Open a TIPS case to the Body/Chassis/Entertainment inbox.
LI80.20-P-078308
Service Bulletin/Repair Instructions
Complaint Depending on the identified problem (items 1-4), please implement the corresponding Remedy below (items 1-4): 1. KeylessGo sensor surfaces do not respond. Door handles can extend/retract if the key is used for locking/unlocking. No particular fault code. 2. Surface-flush door handle fails to retract and/or extend. One or more of the following fault codes are current and stored: B185D96; B185E96; B186196; B186296 The following values are present in the control unit log (A17/x): Motor_bridge_connection_fatal_error = True (for example, see attachment) OR Motor_bridge_wrong_direction_fatal_error = True (for example, see attachment) 3. Surface-flush door handle fails to retract and/or extend. One or more of the following fault codes are current and stored: B185D96; B185E96; B186196; B186296 The following values are present in the control unit log (A17/x): Motor_init_error_for_sensors = True (for example, see attachment) 4. Surface-flush door handle fails to retract and/or extend. The fault code B185911 is stored in the DCU (N69/X). Cause 1. Software bug. 2. Software robustness. 3. Software robustness. 4. The motor resistance is outside the tolerance range. Remedy Depending on the identified Complaint above (items 1-4), please implement the corresponding remedial actions (items 1-4): 1. Perform a reset of the corresponding 'KEYLESS GO' door handle control unit (A17/x) via XENTRY (for example see attachment) add-on is available (add-on 32204 for XENTRY version 06/25) Please use one of the following damage codes: 8213H73; 8219773; 8213K73; 8219873 2. Please process the guided fault check via XENTRY (Add-on 32485 for XENTRY version 06/25; Add-on 32486 for XENTRY version 09/25). In the event of a proposed SCN coding, it must be carried out and the faults must then be cleared. Please use one of the following SSLs: 8213H73; 8219773; 8213K73; 8219873 3. Please process the guided fault check via XENTRY (Add-on 32485 for XENTRY version 06/25; Add-on 32486 for XENTRY version 09/25). In the event of a proposed renewal of the bearing bracket, the corresponding bearing bracket must be replaced. Please use one of the following SSLs: 80A0D73; 80N0D73; 80N0E73; 80A0E73 4. The motor resistance is too low. Bearing bracket must be replaced. Please use one of the following SSLs: 80A0D73; 80N0D73; 80N0E73; 80A0E73 Please note that other published GI documents may also be valid for assessing the problem. For example: "LI72.10-P-074316 Flush-Mounted Door Handle Jams When It Is Pulled Out". Please also refer to SI72.00-P-0014A in WIS. If after the remedy points above are performed, the problem is still present, please submit a TIPS case to the PTS-Body/Chassis/Entertainment inbox. → In this case, store the damaged parts for further analyses.
LI82.85-P-080359
Service Bulletin/Repair Instructions
Complaint Mercedes me connect services inoperative (me-Call, Remote Status, etc.). Mercedes me services - activation not possible Notes: - The event code "B16AC00 - The configuration of the SIM card is erroneous" is active and stored - The head unit shows no internet connection Cause The RAMSES module may be faulty. This fault profile can be recognized as follows: With XENTRY Diagnosis, enter the "ACTUAL values" menu of the RAMSES control unit and read out the values with position 175 and 727. ACTUAL values in the event of a fault: Type of mobile service (position 175): No reception Operating mode (position 727): Ready mode Remedy If B16AC00 is permanently active and saved and position 175 is no reception and position 727 is ready mode, it is highly likely that the communication module is faulty. In this case, an initial start up must be carried out. If the problem persists even after an initial start up, please create a TIPS case.
LI82.85-P-078722
Service Bulletin/Repair Instructions
Complaint The vehicle's position on the map is displayed far away from its actual position, e.g. the vehicle is displayed as being in the middle of the ocean. Note: No relevant DTC is displayed during the quick test. Cause The GNSS antenna is not correctly inserted at the GNSS connection (see picture in the attachment) in the head unit (A26/17). Remedy Insert the plug into the GNSS connection and ensure that the plug has engaged correctly.
LI82.00-P-080029
Service Bulletin/Repair Instructions
Complaint The seat may no longer be adjustable using the electric seat adjustment switch on the door module. No related error is stored in the quick test. Cause Under certain conditions, the electric seat adjustment switch may remain in sleep mode. It is then not possible to adjust the seat using this switch. This is a software error. Remedy To restore functionality, perform the following steps: 1. Remove the door trim from the affected door. 2. Unplug and reconnect the plug of the electric seat adjustment switch (No. 2 in the picture in work instruction AR91.29-P-2522WT) to perform a reset of the switch. Note: The switch does not need to be removed for this. 3. To prevent this problem from recurring, the current software version A2239029930 should be installed on the switch module “Seat Adjustment Switch Group …”. Example: S22 - Select S22 – “Seat Adjustment Switch Group, front left” (SSE-VL) → Adaptations → Control unit update → Update control unit software. If the vehicle already has SW version A2239029930, there is another cause. Please open a TIPS case to the Body/Chassis/Entertainment inbox if the issue persists with the new software installed.
LI54.10-P-073164
Service Bulletin/Repair Instructions
Complaint Yellow information message in driver display (instrument cluster): "Switch on motor to charge the 12V battery" Cause The state of charge (SOC) of the 12V battery has dropped to 45% or less. Remedy This warning message appears as soon as the state of charge (SOC) of the 12V primary battery drops below 45%. This message is displayed to safeguard the vehicle's starting ability. At the same time as the display appears in the instrument cluster, customers with a linked Mercedes me connect account also receive a push notification via the app/by email (if this function is activated). The battery must be charged to a state of charge (SOC) of at least 50%. To do this, an external charger can be connected (please comply with AR54.10-P-1133S) or the vehicle can be driven (by the customer) for 30 to 60 minutes. Please make customers aware of how the vehicle behaves: • If the vehicle is used for short journeys, the battery state of charge may slowly drop to less than 45% – a negative charge balance • A negative charge balance will also occur if the vehicle is used while stationary without running the engine, e.g. if the head unit is used, the ignition is switched on, or other comfort & convenience power consumers, e.g. seat heating/seat ventilation, are active. • An unlocked vehicle may increase consumption, because certain vehicle functions are actively kept ready for the customer. In combination with Keyless-Go or flush-mounted door handles, the vehicle may be woken up if the vehicle key is detected in the vicinity of the vehicle. The cause of the discharge can be identified with the aid of the onboard electrical system data in the EZS using XENTRY Diagnosis. See attached examples for identifying typical customer situations (e.g. operation with ignition on, operation of head unit while stationary or vehicle unlocked while parked). Vehicles with code B01+801: When charging while stationary, the 48V battery must have a state of charge (SOC) of 70% before the 12V primary battery, or the secondary battery in the case of code 503, can be charged. To ensure optimum battery care, please also comply with the existing Service Information documents regarding the handling of stock vehicles (SI54.10-P-0024A) and on remaining in transport mode (SI54.00-P-0004A) until immediately before handover to end customers. Special note: Do not replace any parts, if the message has occurred due to battery discharge as a result of the driving profile or the ignition being switched on (see attached examples); in such cases separate warranty and goodwill invoicing is not possible, as this is a normal on-board electrical system protection function. Likewise battery care and recharging do not qualify as a W&G case. Please advise customers accordingly regarding the above-mentioned issues relating to vehicle use.
LI82.90-P-080159
Service Bulletin/Repair Instructions
Complaint Stored DTC C220564 - "There is an internal fault in the steering angle sensor. There is an implausible signal." In the quick test, there are also no other DTC's in other control units that point to or reference N80 Steering Column Control Module ("SCCM"). There is no effect on any other components or vehicle functions and it does not cause an instrument cluster light. Cause The DTC only ever occurs during initialization (initialization occurs after bus sleep). The SCCM then resets itself. Remedy 1. If the error is stored and no other control unit points to the N80 SCCM – ignore and erase. Software expected in Q4 2026. 2.If the DTC is in the N80 SCCM AND the following DTC's are in N30/3 (Electronic Stability Program) and N68 (Electric Power Steering): • N30/3 ESP: U071286, Steering column tube module control unit has a malfunction. There is an incorrect signal. • N68 EPS: U042986, Implausible data were received from the steering column module. There is an incorrect signal. Please open a TIPS case to the Body/Chassis/Entertainment inbox.
NCU - 2025070008
Service Campaign
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the SRS control unit software does not correspond to current production specifications. The SRS control unit will be updated to improve vehicle charging functionality during future over-the-air updates. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the SRS control unit software.
LI54.10-P-080288
Service Bulletin/Repair Instructions
Complaint The check engine light illuminates or the 48 V message is displayed in the instrument cluster Cause Fault code "P0A7F00" stored in the 48 V battery G1/3 and/or is current. Remedy 1. Check the SOHc of A66 48V battery. (For SOHr, see LI54.10-P-080199) 2. Carry out SOHc reset routine: - Switch on ignition - Read actual value 209 in XENTRY Diagnostics at G1/3 (48 V battery) "State of Health Capacity-SOHC" Valid for OBD markets -- If the value is > 80%, no restoration process required -- If the value is < 81%, continue with the following steps - Discharge Powerpack in vehicle - At SOC < 25%: Stop discharge and bring vehicle to sleep - >1.5h after vehicle sleep: Start engine and charge Powerpack to SOC >65% - At SOC > 65%: Stop operation and bring vehicle to sleep - >1.5h after vehicle sleep: Turn ignition on - Read Diagnostic Service C0C3 (State of Health Capacity - SOHC): if - Capacity > 74%: You can clear fault memory. Procedure finished. - Capacity < 74%: Repeat step 7 again. If after 2 repetitions value is still too high: Read diagnostic service FEE0 - FEE7 (Battery Analysis Protocol Part 1-8) and replace 48V Powerpack.Perform capacity restoration procedure: Valid for OBD markets - SOH > 82%: Process is complete and clear fault memory - SOH < 83%: Repeat the steps once more. If the value is still too low after 5 repetitions: Cancel healing process and provide feedback in TIPS case to the HV/LV team inbox labeled "SOHc cannot be reset"
LI27.19-P-080219
Service Bulletin/Repair Instructions
Complaint Check engine light on with the following fault is current in the VGS Control Unit: P084300 Oil pressure sensor 'A' has a short circuit to positive stored in VGS control unit. Cause Electrical failure of oil pressure sensor integrated into VGS Control Unit Remedy Intelligent Predictive Repair (IPR) recognizes this fault pattern and will provide the necessary repair suggestion. 1. Perform IPR and follow the recommended procedures 2. Replace complete EHS valve body, fill to near max fluid level, & complete initial start-up - Ensure all oil guide pipes are installed in the new valve body to prevent a new concern after replacement.
LI54.71-P-080236
Service Bulletin/Repair Instructions
Complaint Red ring displayed around vehicle when front or rear camera door actuates. Please also see LI54.65-P-080132 for additional listed red ring causes. Cause EMF interference. Remedy Camera functionality is not affected. Cameras and displays operate normally. For vehicles with a front facing actuating camera and flap (223 and 297): • 223, 297 > Install clip on ferrite magnet on M35/1, pin 3. For vehicles with rear facing camera (223, 213 Facelift, 238, 257, 290, 297): • 297 > Install 2 x ferrite magnets on M35/2, pin 3 and 4. • 213 Facelift, 223, 238, 257, 290 > Install on M35/2, pin 4
NCU - 2025040013
Service Campaign
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the ME-SFI control unit software does not meet current production specifications. As a result, a check engine malfunction indicator lamp might erroneously be triggered. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the ME-SFI control unit software.
LI83.30-P-079850
Service Bulletin/Repair Instructions
Complaint Customer states the AC either does not cool/has poor performance or heat is insufficient. Cause Many possible root causes Remedy *Note - This Li does not apply if there are other Li's that apply to your concern OR you have a fault and/or guided test that leads to a root cause. AC Diagnosis (General) Initial Steps Verify Customer Concern • Confirm the issue reported by the customer. Compare to Like Vehicle • Determine if the behavior is normal by comparing with a similar vehicle. Determine Your Game and Players • Identify the diagnostic strategy and involved components/systems. Testing • Perform relevant diagnostic tests. Refrigerant Quantity • Record the amount of refrigerant recovered and compare it to the specified value (if applicable). • Forming Gas is the ONLY approved leak test method. (DYE is NOT approved) TIPS Case Submission Requirements/Warranty Claim Submission Requirements (Template attached to be used for submission of Warranty claim and/or TIPS case) Cooling Capacity Test (If System Has a Charge) *Note - TIPS case is only required if the root cause is not identified or other Li's/documents require a case to be open. Before Repairs Gauge Readings • High and Low pressure readings (from machine or separate gauges). Leak Detection (if applicable) • PPM of any leaks found. XENTRY Printouts • Climate control AVs. • HV compressor AVs (for heat and AC systems). Thermometer Readings • Left and right dash vents. • Center vent, footwell, and/or rear vents (if concern is localized). Ambient Conditions • Temperature and humidity from OCP AVs (if available). After Repairs Gauge Readings • High and Low pressure readings before and after repairs. Thermometer Readings • Left and right dash vents before and after. • Center vent, footwell, and/or rear vents before and after (if localized concern). Documentation • Complaint Analysis, Game/Players, and Testing Steps. • Include expected results and technical justification for the diagnosis. • Avoid listing R/I steps—focus on diagnostic reasoning and root cause. • All prior measurements need to be documented on the repair order. OP code usage: 831232 - Max .5 for Cooling Capacity Test 831040 - Only to be utilized if you have a fault code and are actively diagnosing that fault code (MAX 1 hour) 831762 - This includes basic leak check 831285 - This can only be used in extenuating circumstances where a leak cannot be found (MAX 1 hour)
LI05.20-P-080192
Service Bulletin/Repair Instructions
Complaint Customer states check engine light on in the dash. Vehicle has one or more DTC's Present P164B00, P164B09, P2B4400, P005A07, P005C07, P005A09, P005C09, P003C07, P2B5007, P003C09, P2B5009, P34C200, P34C109, P34C800, P34BE00, P34BD09 Cause Software and Hardware Remedy 1. Check for available Software updates for the Engine Control Unit ME N3/10. Perform update if available. 2. Check part numbers on ALL CAMTRONIC actuators to ensure latest part numbers are installed. 3. A177 982 03 03 and A177 982 17 00 should be replaced by A177 982 19 00 4. A177 982 02 03 and A177 982 16 00 should be replaced by A177 982 18 00 5. Remove engine cover and check for heat damage on the engine cover and wiring harness in the area above the engine compartment bulkhead and near the windshield. 6. In the event of wiring harness damage please open a TIPS case with photos of the harness and include a Lambda Line Graph Test for evaluation.
LI54.10-P-080199
Service Bulletin/Repair Instructions
Complaint For the potentially affected vehicles, excessively high aging of the battery was calculated at cold battery temperatures (<10°C) and the MIL activated accordingly, even though there is no corresponding high level of aging physically. In this regard, the fault code P0A7F00 "The age limit of the hybrid/high-voltage battery module has been reached" is displayed in the N127 PTCU control unit and/or A66 battery module control unit (48 V battery). Cause Faulty computation of the age limit of the 48 V battery. Remedy Step 1: Software update of A66 battery module (48 V battery) Step 2: Perform reset routine: 2.1 Read out actual value 056 in A66 control unit (age limit SOH-R) a. If SOH-R <= 125%: Delete fault memory in PTCU control unit (N127) and 48 V battery (A66). Process ended. b. If SOH-R > 125%: Drive for 60 min to add SOH-R value. 2.2 Read out actual value 056 in A66 control unit (age limit SOH-R) a. If SOH-R <= 125%: Delete fault memory in PTCU control unit (N127) and 48 V battery (A66). Process ended. b. If SOH-R > 125%: Park vehicle > 12 hours in the workshop at a warm ambient temperature > 15°C, then drive for 60 min. 2.3 Read out actual value 056 in A66 control unit (age limit SOH-R) a. If SOH-R <= 125%: Delete fault memory in PTCU control unit (N127) and 48 V battery (A66). Process ended. b. If SOH-R > 125%: Create TIPS case
LI27.35-P-080160
Service Bulletin/Repair Instructions
Complaint (Original LI document #: LI27.35-P-079039) Clicking noises from the electro-hydraulic control unit (EHS) when the vehicle is stationary and ECO Start/Stop is active (combustion engine is off). The noise is more noticeable outside the vehicle and in acoustically shielded areas such as closed rooms or garages. Cause The noise in the valve body (EHS) is caused by superimposed pressure peaks acting on the valves. This phenomenon occurs only after a certain running-in period due to the influence of micro-contamination in the valve bores. Remedy A hardware modification of the electro-hydraulic control unit (EHS) is currently being implemented (no change to the part number). This will be incorporated into series production and as a spare part starting from 12/2025. This is only a comfort-related complaint and has no impact on the functionality or service life of the transmission. For sensitive customers, the following measures can be performed: 1. Replace the electro-hydraulic control unit (EHS), the oil pan, and the transmission fluid. - Ensure all oil guide pipes are installed in the new valve body to prevent a new concern after replacement. (See attached location guide)
LI47.70-P-076030
Service Bulletin/Repair Instructions
Complaint After the charging process is complete, an instrument cluster message with a charging error appears and FC P0CFE00 is stored in control unit "N83 - AC charger for high-voltage battery (SG-LG)". The fault message and the fault memory entry can also appear at the beginning of the charging pause during delayed charging. Both only occur in combination with active pre-entry climate control. Cause Software in control unit "N83 - AC charger for high-voltage battery (SG-LG)". Remedy For model series 167, 214, 254 and 223 with code 802: Perform SCN coding in control unit "N83 - AC charger for high-voltage battery (SG-LG)". Please do not replace any parts even if the FC P0CFE00 coding continues to appear after successfully completing this step. A new software is currently in development and will become available in late 01/2026. Replacing parts will not remedy the issue. For model series 243: The correction is already available. Please inform the workshop to perform a software update and SCN coding for the control units "N116/5 - Direct current charging connection unit (DCCU)" and "N83/11 - AC charger for high-voltage battery (SG-LG)" in order to remedy the problem.
LI54.65-P-066284
Service Bulletin/Repair Instructions
Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No camera image is displayed in the head unit. The reversing camera or the 360° system functions normally when activated manually or by engaging drive range "R". Cause This is not a malfunction, but an intended system behavior. Calibration of the reversing camera is in progress. The calibration is completed by: • Opening the camera cover for a maximum of 5 cumulative minutes. • If the vehicle speed is < 35 km/h (<22 MPH). • The steering wheel angle is < 10°. If calibration is aborted by exceeding one of the above conditions, the camera retracts and the calibration will re-attempt once the conditions are achieved and the speed returns to the range of 18 km/h (~11 MPH). Remedy SCN code PARK213M on MFA2 facelift vehicles produced after 09/2024 (A-Class, CLA, GLA, etc...) so the complete calibration speed window is available. For vehicles with PARK213M or PARK223 a calibration is completed successfully by: • Driving forward (typically less than 1 minute). • Vehicle speed is < 35 km/h (<22 MPH). • The steering wheel angle is < 10°. • During daylight. • Without a vehicle following too closely (camera must be able to see asphalt). When calibration has completed successfully, the camera door closes automatically for the rest of the driving cycle. The camera will now only open if the customer requests (Example: Engaging reverse gear). The calibration of the camera will re-initiate every drive cycle (ignition change). The customer can generally perform calibration at the first attempt while briefly maintaining a speed range of 15 km/ h (~9 MPH) and 35 km/h (~22 MPH). The customer can therefore play a significant role in reducing the camera door noise and actuation frequency.
LI68.20-P-080012
Service Bulletin/Repair Instructions
Complaint USB port not functioning properly. Cause Most reported USB port issues are due to improper use or contamination. Note: Any repair costs must be discussed with the customer beforehand. Common external factors identified include: • Fluid intrusion • Broken bushings or physical damage See attachments. Remedy If a component needs replacement but shows no visible external damage, submit a detailed TIPS case only when technical support is required. Include details of all connected external devices (such as charging cables, USB drives, and hard drives). If diagnostic results directly indicate component replacement, a TIPS case is not necessary.
LI27.35-P-079971
Service Bulletin/Repair Instructions
Complaint Possible complaints about shift quality, issues with learning the park lock, and slipping/rinse entries in the EEPROM or Transmission Health system following the replacement of the below components: - The electrohydraulic control unit (EHS valve body) in transmission 725.0/725.1 - The repair kit for the control unit (VGS) in transmission 725.0 Cause Missing, incorrectly installed, or damaged guide tubes on the EHS valve body. Remedy Check for the correct installation of the guide tubes (refer to attachments under “Cause”), correct installation if necessary. Parts Catalog References: NAG3M 725.1 AND NAG3C 725.0 (AMG only): Part numbers 100, 120, 150, 160 NAG3C 725.0 (Non AMG): Part numbers 280, 290, 330, 340 NOTE: If any of these guide tubes are not installed and the vehicle is driven, it will create several rinse and slipping events in the EEPROM data. These values caused by incorrect installation need to be erased to prevent future misdiagnosis. Submit a TIPS case to the Powertrain inbox with the following to receive the necessary reset password: - Initial Quick Test w/ Freeze frame data - VGS Control Unit Log - IPR Result - Initial EEPROM data (before repairs) - Latest EEPROM data - Photo of oil level ultrasonic measurement next to XENTRY specifications Please provide detail regarding the reasoning for the initial replacement in your workshop findings and measures performed. (This topic was covered in the July 2022 and July 2024 Passenger Car Tech Topics)
LI42.10-P-079904
Service Bulletin/Repair Instructions
Complaint At low speeds and light brake pressure, brakes will make a groaning or honking noise. Cause Frictional vibrations with very light brake pressure/modulations. Remedy This condition can be duplicated on most vehicles. To validate, use a like for like reference vehicle. The noise is normal behavior under the conditions listed. With very light brake pressure this noise can be induced/caused due to normal brake pad and brake rotor vibrations. Exchanging brake components will not rectify.
LI54.10-P-071499
Service Bulletin/Repair Instructions
Complaint The result from the XENTRY battery test does not match the current state of the battery. Cause The XENTRY battery tester uses the stored on-board electrical system data in the SAM module to access the health of the 12 volt battery. The XENTRY battery test may not take into account a single discharge event because the SAM or EZS cannot record the data if the battery is discharged. Note: A discharged battery does not necessarily need to be replaced. A discharged battery may be recovered with no permanent damage. Remedy 1) If the battery is discharged, charge the battery. Review WS54.00-P-0037B for minimum charger specifications. • Note the amperage difference between trickle (maintainer) chargers of at least 16A and quick chargers of at least 30A. • Review AP54.10-P-5449U. Note when battery is sufficiently charged the charger current is less 5A. 2) While charging the battery, analyze the vehicle data to determine root cause of discharge using the following data points: • NOTE: For guidance on use of the on-board electrical data please review the AKUBIS video titled "New onboard electrical system diagnosis shown on BR 166". The video can be accessed through WIS by following the path WSM--> content by model series --> passenger cars --> ML-Class --> Model 166 --> group 54 --> New onboard electrical system diagnosis. • Refer to the March 2023 PCTT for the video walkthrough of analysis as well as the attachment of the slides to this Li. • Review GF54.10-P-1012A regarding what can cause deep discharge protection to not end a battery draw. • Review SI54.10-P-0024A for proper maintenance of the vehicle. For Star 2 vehicles: -Review FSAM on-board electrical data conspicuous records • NOTE: This data can be found via FSAM N10/6 -> Actual Values -> On-board electrical system -> On-board electrical system data For Star 3 vehicles: -Review N73/3 EZS on-board electrical data conspicuous records • NOTE: This data can be found via EZS N73/3 -> Actual Values -> On-board electrical system -> On-board electrical system data 3) Determine if root cause is due to: • vehicle technical issue? • customer behavior? NOTE: Recommend using battery analysis sheet found in XiW -> Local Contents -> Diagnostic info -> Battery Discharge Worksheet 4) If battery still does not accept charge AND the vehicle does not fall within the parameters of improper maintenance, then create a TIPS case. *IMPORTANT* - If the improper maintenance/use is found during diagnosis, DO NOT open a TIPS case. If a TIPS case is opened, it will be marked 1 star and directed to your assigned FSE for review. TIPS Case must include with the case: • Amperage setting of charger and time battery was on charger • XENTRY Battery Tester results • Voltage of battery taken with multimeter: Do not connect charger while taking measurements • N10/6 FSAM, (N73 or N73/3) and (N73*1 or N73/3*1) • Workshop analysis of conspicuous data • Root cause analysis for battery discharge based on the above documents (technical, customer, etc.) • NOTE: For expedited results when creating a case write customer complaint as "XENTRY Battery Tester implausible".
NCU - 2025090003
Service Campaign
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the software for the powertrain control unit (PTCU) does not correspond to the current series production configuration. The possibility exists that a control unit timeout may occur followed by malfunction indicator lamp (MIL) activation. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the PTCU software in the affected vehicles.
NCU - 2025080007
Service Campaign
Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the High Voltage Battery (“HVB”) AC charger software does not correspond to current production specifications. As a consequence, a HVB MIL may illuminate during charging due to fluctuations in power consumption of the charging socket actuator. Remedy MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the HVB AC Charger Software.
OTA - 20250627
Over The Air
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has updated driver assistance system SCN coding available for certain subject vehicles. The updated SCN coding improves system stability and enhances the availability of driver assistance features. MBUSA will conduct an OTA service campaign. Remote SCN coding updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.
CL - 05012025
Other
In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA is extending the warranty coverage for the Diagnostic Module for Tank Leakage detection (“DMTL”) on your vehicle from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 15 years/150,000 miles (whichever occurs first). This applies to the vehicle regardless of ownership.
LI82.20-P-073522
Service Bulletin/Repair Instructions
Complaint It remains dark when switching on the rear passenger compartment interior lighting. Cause Coding of component part control unit N10/6. Remedy 1. Perform SCN coding of component part control unit N10/6. 2. Reset settings of interior lighting on rear displays, see pictures 2 to 4 in attachment. For vehicles without rear displays, perform reset on rear tablet. 3. Operate reading light pushbutton switch (A) in grab handle light => Reading light only turns on in grab handle light 4. Operate reading light pushbutton switch (A) in grab handle light again => Reading light only turns off in grab handle light
LI82.20-P-079313
Service Bulletin/Repair Instructions
Complaint The adaptive rear compartment lighting is sporadically inoperative. In one or all rear interior lamps, one of the following specified fault codes (DTC) is stored. • E48/3 (Adaptive rear interior lamp, roof, left) / DTC B17D149 - The "Adaptive interior lighting" control unit for the rear left roof has malfunctioned. There is an internal electrical fault. • E48/4 (Adaptive rear interior lamp, roof, center) / DTC B17D349 - The "Adaptive interior lighting" control unit for the rear center roof has malfunctioned. There is an internal electrical fault. • E48/5 (Adaptive rear interior lamp, roof, right) / DTC B17D249 - The "Adaptive interior lighting" control unit for the rear right roof has malfunctioned. There is an internal electrical fault. Cause Software in the control units E48/3-5. Remedy Update the software of control units E48/3-5.
LI33.30-P-056665
Service Bulletin/Repair Instructions
Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (and vice versa). Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to micromovement in the connection between the wheel bearing inner race and the joint housing of the side shaft. Note: The collar nut must always be replaced after being loosened and must be tightened to the specified torque. Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove outboard side shafts (extract outer joint gearing from wheel hub) 2. Clean contact surface A (see image file in attachment "Outer joint housing before") before coating with Molykote, using "spirit" (free of dust and grease) 3. Coat contact surface A (see image file in attachment "Outer joint housing after") using Molykote and leave to dry for one hour in removed condition 4. Reinstall side shafts
EW - Tank Leakage
Warranty Program/Extension
In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (“MBUSA”) is extending the warranty coverage on the Diagnostic Module for Tank Leakage detection (DMTL) in certain Model Year (“MY”) vehicles listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 10 years/120,000 miles (vehicles certified as LEV II) and 15 years/150,000 miles (vehicles certified as LEV III), whichever occurs first, for the following condition: • Under certain circumstances, the DMTL may trigger erroneous Diagnostic Trouble Code (DTC) entries that may result in the illumination of the Check Engine Malfunction Indicator Lamp (‘MIL’).
LI32.50-P-079304
Service Bulletin/Repair Instructions
Complaint Harsh shift feeling followed immediately by "Suspension Malfunction" on instrument cluster and accompanied by either: P0AFB00 in A79/8 OR U013287 B210A00 in M67/X Cause Software timing with 48V and suspension systems. Remedy Update the Integrated Starter Alternator control unit (A79/8) software. Note that A79/8 has two listed software numbers on the quick test, updating the control unit should update the pair to the following combinations (example attached for software number locations): • A7259026400 and A7259030801 • A7259026700 and A7259031401 • A7259026800 and A7259031601
LI54.65-P-078762
Service Bulletin/Repair Instructions
Complaint Please note that the exact quick test conditions must be met as seen below. If not exactly as listed below, there is no need to create a TIPS case referencing this LI unless further assistance is needed outside of this document. Conditions Instrument Cluster Message: "Park Assist Inoperative" and Hardware part numbers: A0009019716 or A0009016022 B223263 with Bosch-ID C259; A+S (Active and Stored) and B223255 with Bosch-ID 1B5D; A+S (Active and Stored) Notes: • Other DTC's are permitted but the above three conditions must be met. If they are not met, this LI is not applicable. • See attachment "LI Criteria" for an example. • Attachment portrays a quick test with non-matching criteria and therefore does not require a TIPS case. Cause Under analysis. Remedy Please do not make any attempts to repair the park control unit. Do not flash or SCN code. Open a TIPS case.
OTA-5497821/22
Over The Air
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the coding for the electronic ignition lock control unit does not correspond to the latest series production configuration. The electronic ignition lock control unit will be updated to change the logic for locking and unlocking the vehicle via the door handles. To unlock the vehicle, the large outer contact surface of the door handle must be touched. To lock the vehicle, the small, recessed contact surface of the door handle must be touched. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.
LI82.10-P-078896
Service Bulletin/Repair Instructions
Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A leak test must be performed to determine if physical fogging exists or if the headlamp is leaky. Remedy Check for external damage: You can identify a damaged headlamp in the following way: For headlamps with a closed system 1. Check the headlamps for any external damage and check also for correct seating of the Gore-diaphragm/correct latching of the cover caps. 2. If the headlamp exhibits any external damage, replace the headlamp. For headlamps with an open system 1. Check the headlamps for any external damage and seal off the vent, then make sure the cover caps are latched correctly into place. 2. If the headlamp exhibits any external damage, replace the headlamp. Note: External damage to the headlamp does not present a warranty or goodwill case. 1. Clear fogged/condensed LED headlamps and LED rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4°F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood or trunk. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). 7. If the condensation has disappeared, nothing else has to be done. Note: If defrosting has been performed, you can skip the first step. 2. Leak test of headlamp with overpressure: • Connect test adapter to pressure tester. (Figure 1) • Check test adapter for leak tightness. To do so, connect plug and coupling (picture 2) and apply a maximum overpressure of 30 mbar. The pressure must remain constant. If the pressure does not remain constant, use a new adapter. • All vents have to be sealed with sealing compound and the existing diaphragm with the stamp (picture 3 [3]). (Picture 4) Make allowance for the different headlamp variants here (there are different outlet openings). • Check if the headlamp needs to be removed to gain access to the diagnostic socket on the headlamp housing. • Plug the adapter onto the diagnostic socket on the headlamp housing. (Picture 5). • Apply a maximum of 30 mbar overpressure to the headlamp housing. Note: If the maximum overpressure of 50 mbar is exceeded the headlamp seal will be damaged (picture 6). • If a pressure drop of less than 10 mbar is measured within 30 seconds, the headlamp is tight and there is natural physical condensation. • If a higher pressure drop than 10 mbar is measured within 30 seconds, the headlamp is leaky. Note: The leaky position can be localized with the aid of soap suds. If the pressure test is not passed, the headlamp is leaky. If the cause cannot be rectified, the headlamp must be replaced. Note: If the headlamp is replaced, no dry packs may be installed on the new replacement headlamp. AR82.10-P-5455WT was created for the pressure test. This AR can be used as a reference manual for all closed headlamps. In the event of an open headlamp system, the vent ducts must be sealed before the pressure test.
OTA - 20250425
Over The Air
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the airbag control unit software does not correspond to the latest series production configuration. The airbag control unit will be updated to improve the vehicle charging functionality during future OTA updates. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.
LI83.30-P-079081
Service Bulletin/Repair Instructions
Complaint Random heating of air conditioning system. Cause Temperature sensor in overhead control panel (OCP) delivering incorrect values: The temperature sensor in the overhead control panel is malfunctioning. Fault code B110709 or fault code B11F697 are present in the overhead control panel with the status (active) or (active stored). or The temperature sensor in the overhead control panel measures an incorrect temperature (the temperature value can be checked against the actual value in the overhead control panel) If the above-mentioned fault code is not present, the cause could be malfunction on the air conditioning system. Remedy If one of the above-mentioned fault codes should occur, a TIPS case must be created here. If the above fault codes or actual value differences are present in the OCP - please send the case to the Body/Chassis/ Entertainment inbox. Otherwise, the case must be sent to the HV/LV inbox for support in A/C diagnosis. *** It is not necessary to replace the overhead control panel ***
NCU - 2025030015
Service Campaign
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the SCN coding of the electronic ignition control unit does not correspond to the latest production specifications. As a result, a red battery warning message could inadvertently display on the instrument cluster. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will perform an SCN coding of the electronic ignition control unit.
LI27.35-P-079039
Service Bulletin/Repair Instructions
Complaint A clicking/ticking/taping noise from underneath the vehicle with engine off during ECO stop event or after parking See video for example Cause Noise originates within the transmission valvebody Remedy Take a video from underneath vehicle recording the noise Pull EEPROM data, Inital Quick Test, and Control Unit Log Please open a TIPs case providing all data to assess next steps.
OTA - 5496236
Over The Air
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the software for the airbag control unit does not correspond to the latest series production configuration. The airbag control unit will be updated to improve the vehicle charging functionality during future OTA updates. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.
LI65.10-P-074275
Service Bulletin/Repair Instructions
Complaint A) Wind noise in area of rear edge of rear fixed element of panoramic sliding sunroof (EPC item 78/150/550) at speeds over approx. 75mph (Picture I) B) Wind noise in area of rear edge of rear fixed element of panoramic sliding sunroof (EPC item 78/150/550) at speeds over approx. 120mph (Picture I) Cause Below are potential causes for the complaint. A) Lifting and vibrating of sealing lip of rear roof paneling (EPC item 65/015/310) on outer left and right, at the contact surface with the end cap of the drip rail (EPC item 69/060/250) B) Lifting and vibrating of sealing lip of rear roof paneling (EPC item 65/015/310) in the center of the vehicle (Y=0), at the contact surface with the rear fixed element of the panoramic sliding sunroof (EPC item 78/150/550) Identification of source of noise by masking off of (Picture II): A) Joint between drip rail (EPC item 69/060/250), rear roof paneling (EPC item 65/015/300) and rear fixed element of panoramic sliding sunroof (EPC item 78/150/550) B) Joint between sealing lip of rear roof paneling (EPC item 65/015/310) and rear fixed element of panoramic sliding sunroof (EPC item 78/150/550), with approx. 5 cm-long adhesive strip - CAUTION: Sealing lip is very sensitive, do not damage! Remedy A1) Sealing lip (EPC item 65/015/310) is mounted OVER the end cap of the drip rail (EPC item 69/060/250) (Picture III): Carefully push sealing lip under the end cap of the drip rail using a wide plastic wedge A2) Sealing lip (EPC item 65/015/310) is mounted UNDER the end cap of the drip rail (EPC item 69/060/250) (Picture III): Trim sealing lip in extension of glass edge of rear fixed element for panoramic sliding sunroof (EPC item 78/150/550) (Picture IV) B) Replace sealing lip (EPC item 65/015/310); to do so, the rear roof paneling (EPC item 65/015/300) must be removed (attempt to remove the rear roof paneling without damaging it; only replace if damaged) NOTE: Before starting the repair, please ensure that the parts are available in the workshop!
LI82.20-P-073523
Service Bulletin/Repair Instructions
Complaint The overhead control panel can have various complaints, e.g.: • Failure of overhead control panel lighting • Failure of sliding sunroof actuation • Failure of interior temperature sensor • etc. Cause Overhead control panel complaints can be caused by an obsolete software release. Remedy *** It is not necessary to replace the overhead control panel *** Before updating the software of the overhead control panel, implement the following steps: 1. Detach overhead control panel 2. Disconnect overhead control panel (disconnecting the overhead control panel causes it to reset) 3. You must wait 15 seconds after disconnection before the overhead control panel can be reconnected 4. Connect overhead control panel 5. Conduct overhead control panel software update If fault code B22A341 is visible AFTER the software update, then this fault code can be ignored. This fault code has no impact on the customer or the function.
LI82.20-P-079001
Service Bulletin/Repair Instructions
Complaint If a door is opened, the color of the footwell lamp under the front seats on one of the two sides does not change to white. It may therefore be the case that the rear left footwell lamp is illuminated in white and the rear right footwell lamp is illuminated in blue, as shown in the example picture in the attachment. The right thing would be for the color of the above-mentioned footwell lamp to change to white or to the set ambient light color if the door is opened or closed. Cause Incorrect SCN coding in control unit N10/6 (Front SAM). Remedy Perform SCN coding in control unit N10/6 (Front SAM).
LI46.35-P-076566
Service Bulletin/Repair Instructions
Complaint A squeaking noise comes from the electric power steering; see video with example. Cause Toothed rack in the area of the screw drive of the electric power steering needs additional grease. Remedy 1. Lift the vehicle and remove the center engine compartment lining; for basic data, see WIS AR61.20-P-1105S 2. Loosen the bellows of the electric power steering on the right of the steering gear and slide outward on the tie rod – the tie rods do not need to be removed! For basic data, see WIS AR46.40-P-9998S 3. Turn the wheels fully to the right. The screw drive of the rack-and-pinion steering becomes visible. See picture 1 of screw drive 4. Clean the screw drive with a clean cloth and remove the existing grease. See picture 2 of cleaned screw drive 5. Prepare a clean brush for greasing the screw drive and, if necessary, mask off the metal sleeve of the brush or similar components to avoid damage to the steering housing or to the screw drive of the toothed rack. See picture 3 with example brush 6. Apply a sufficient amount of long-life grease (A001 989 84 51 09) to the screw drive of the toothed rack with the brush, making sure that this is applied evenly all around; see picture 4 of greased screw drive 7. Reinstall the steering bellows, making sure to replace the inner clamp! Important: The contact surfaces of the bellows and the rack-and-pinion steering should be coated with a thin layer of Renolit (Renolit CX-FO 20, A094 989 38 00 11). For basic data, see WIS AR46.40-P-9998S 8. Move the rack-and-pinion steering several times from one steering limitation to the other to ensure that the grease is evenly distributed in the housing. 9. Assemble in the reverse order.
LI82.20-P-079002
Service Bulletin/Repair Instructions
Complaint The luggage compartment lighting switches off and back on erratically if the tailgate is opened with the ignition switched off. Cause The problem was caused by a software error in the control unit N10/8 (Rear SAM). Remedy Software update to the control unit N10/8 (Rear SAM - Signal acquisition and actuation module rear control unit).
LI83.50-P-078996
Service Bulletin/Repair Instructions
Complaint No airflow or ventilation from the rear blower regardless of input from rear controller, tablet or front MBUX controls. Functions do work with XENTRY and there may or may not be faults stored. Cause SW error in N10/6*1 Remedy Perform SCN coding of N10/6*1.
OTA - 5497748
Over The Air
Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the communication software does not correspond with the latest series production configuration. The communication module will receive an OTA update which includes quality-enhancing optimizations and improves the system stability and accessibility of Mercedes me services. The update is downloaded and installed in the background. During installation, the system can be used without restrictions. The new software will become active after the vehicle has been restarted. Remedy MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.
2025020006
Service Campaign
Update Digital Operator's Manual. 1. Connect XENTRY Diagnosis. 2. Update Digital Operator's Manual. To do this, select menu item "Quick test view . A26/17 - MBUX multimedia system (head unit) . Adaptations . Control unit update . Updating of the control unit software". Then follow the user guidance in XENTRY Diagnosis. The Digital Operator's Manuals are downloaded automatically via Retail Data Storage to XENTRY Diagnosis to match the affected vehicle. 3. Disconnect XENTRY Diagnosis. 4. Check whether the Operator's Manual in the vehicle document wallet, as well as the supplements and ACCORDION-FOLD DOCUMENT are present and whether the version is correct. The missing or incorrect Operator's Manual, as well as the supplements and ACCORDION-FOLD DOCUMENT must be replaced or enclosed as an aftermarket measure. The Operator's Manual, supplements and ACCORDION-FOLD DOCUMENT must be determined according to the equipment variant for the vehicle identification number via the parts process in the XENTRY Portal.
LI47.50-P-078804
Service Bulletin/Repair Instructions
Complaint Customer-perceived problem: • Fuel gauge reading implausible • MIL ON (market-dependent) N118/3 Fault codes in control units FSCM_GEN4/5/6 • For these fault codes, the tests contained in XENTRY must be carried out P046109 / P206609 / P13E600 • For these fault codes, the connector couplings/wiring harness routing must be checked for damage P206600 / P046100 Cause Various Remedy Carry out XENTRY tests for the listed fault codes in the FSCM (N118) and document the monitor graphics for the primary/ secondary lever-type sensors.
LI42.10-P-063502
Service Bulletin/Repair Instructions
Complaint Noises/ squealing from the service brake in various driving situations and ambient conditions. Cause Frictional vibrations Remedy AMG brake systems are designed for high loads. This can result in noises under certain operating conditions and driving styles. Please refer to the Operator's Manual for further information such as care and maintenance instructions (washing vehicle directly after heavy use and using approved cleaning agents). These are dependent on speed, brake pressure or ambient conditions such as temperature and air humidity. 1. Beginning Diagnostics: a) Check whether, apart from this document, an additional document exists for the model series in question, and if so, work through it and then continue with1b. b) Check whether the complaint can be reproduced and at which axle or side the noises occur (ideally together with the customer while driving). c) Check the affected system for component wear, mechanical damage or localized overheating damage. 1. Replace damaged components as necessary and re-assess noise concern. d) Secure vehicle on a lift. 1. Start the engine and depress the brake pedal 3-4 times. 2. Check each wheel to see if they turn freely by hand. 3. If a wheel is not turning freely by hand, this needs to be addressed prior to re-assessing the noise concern. e) Assess condition of brake rotors and pads per WIS and visually (i.e. long periods of stagnation, etc...). 2. Specific Axle Work: NOTE: If brake pad has a metal backing plate, there is no need to affix the adhesive film. a) If the noises are coming from the front axle => Affix linings with adhesive film (see attachments for front axle). If backing plate is installed on pads, move to step 3. 1. Remove brake linings of front axle. 2. Clean all contact points on brake lining and brake caliper/carrier. 3. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining. For 6 piston calipers, only in the area of the center piston. For other piston caliper configurations less than 6, apply where the piston(s) makes contact with the back of the pad. 4. Chamfer edges (round off sharp leading edges) on brake pads. See picture "Chamfered Pads". 5. After installing the brake linings, actuate the brake for 30 seconds. b) If the noises are coming from the rear axle => Affix linings with adhesive film and grease the lining as per the specification (see attachments for rear axle). 1. Remove brake pads of rear axle. 2. Cleaning all contact points on brake lining and brake caliper/carrier. 3. Grease contact points (red areas) between brake lining and guide of brake caliper with heat-resistant lubricating paste. 4. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining. 5. Chamfer edges (round off sharp leading edges) on brake pads. See picture "Chamfered Pads". IMPORTANT: Be absolutely certain to not allow paste between friction surfaces of the pad and disc! 3. Brake Bedding Process: a) Before trip, the mileage incurred must be clarified with the customer (approx. 30 miles). b) Select a suitable route so speeds of approximately 65 MPH can be achieved. c) Brake the vehicle 15 times with a brake pressure of approx. 30 bar (have the passenger read it out using XENTRY) from 62 MPH to 30 MPH (no emergency stops and no braking in the ESP control range). Maintain a cooling distance of approx. 1 mile between brake applications. d) Finally drive approx. 3 miles to allow the system to cool. e) Reassess noise.
LI54.10-P-077250
Service Bulletin/Repair Instructions
Complaint For the potentially affected vehicles, excessively high aging of the battery was calculated at cold battery temperatures (<50°F) and the MIL activated accordingly, even though there is no corresponding high level of aging physically. In this regard, the fault code P0A7F00 "The age limit of the hybrid/high-voltage battery module has been reached" is displayed in the N127 PTCU control unit and/or A66 battery module control unit (48 V battery). Cause Faulty computation of the age limit of the 48 V battery. Remedy Do not replace any parts!! Step 1: Perform the software update of A66 battery module (48 V battery) After SW has been updated, perform the following reset procedure: Step 1: Read the State of Health Resistance - (SOH-R) Step 2: If SOH-R <=125%: Clear fault memory in PTCU(N127) and 48V battery (A66). Procedure finished. If SOH > 125%: Drive for a duration of 60 minutes to retrain the SOH-R value. Step 3: Read the State of Health Resistance - (SOH-R) If SOH-R <=125%: Clear fault memory in PTCU(N127) and 48V battery (A66). Procedure finished. If SOH > 125%: Park vehicle in Workshop for >12 hours in warm ambient temperature >60F, afterwards drive for a duration of 60 minutes. Step 4: Read the State of Health Resistance - (SOH-R) If SOH-R <=125%: Clear fault memory in PTCU(N127) and 48V battery (A66). Procedure finished. If SOH-R is still >125%, open a TIPS case.
CL - 2024110005
Other
Please visit an authorized Mercedes-Benz dealer where they will check the wiring of the lens hood of the multifunction camera and replace it if necessary. This repair is free of charge. Please schedule an appointment by contacting the MBUSA Customer Care Center at 1-800-367-6372, or locate your nearest dealer using the QR code and “Find a Dealer” section on the website.
LI88.60-P-072093
Service Bulletin/Repair Instructions
Complaint Fuel door may require several attempts to open. Please note that if the complaint "Fuel filler flap not opening" occurs, it is important to check the fuel filler flap before replacing the central locking actuator. For gasoline hybrid vehicles where the fuel filler flap fails to open or does so but slowly, observe the document "Fuel filler flap fails to open or does so but slowly on plug-in HYBRID gasoline vehicles"! Cause Central locking actuator may have an electrical fault and may not open. Remedy 1. Car locked: To rule out incorrect operation, operate the fuel filler flap in the area shown in Fig. 1 and listen out for the clicking noise of the microswitch in the central locking actuator. If no clicking can be heard, continue with point 4. 2. Car unlocked: Press area on flap to start the microswitch clicking. Flap opens - show the customer the area to press. 3. Car unlocked: Flap cannot be opened regardless of which area you press. Open the flap by operating the emergency release for the CL actuator (through trunk, fender gap cover, etc, depending on specific vehicle) 4. Central locking actuator pressed directly, no clicking of microswitch, no electrical release of central locking actuator => Clicking of microswitch, electrical release of central locking actuator => Tank filler recess/charging recess not OK; report results via a TIPS case to B/C/E Inbox. 5. Replace central locking actuator; check function of new part before installing it: Do not dispose of damaged part. New central locking actuator does not release: More detailed examination of connector coupling, wiring harness, electrics required.
LI27.00-P-073532
Service Bulletin/Repair Instructions
Complaint If TRANSMISSION 725.1 (9G TRONIC FACELIFT) exhibits any "shift quality" problem symptoms, various optimized diagnosis procedures are available to you for selected vehicle model series with STAR3 architecture, Cause Various Remedy Despite this, the problem shift mechanism should be verified with XENTRY in the presence of the customer as a preparatory measure. In event of shift quality problems, before the start of any repair or standard adaptation, the latest quick test, the transmission control unit log and the EEPROM data should be read out as a txt file (*.txt). The EEPROM data must be stored separately on a data medium (USB stick) as it can no longer be reproduced after adaptation has been performed. Before creating a TIPS case always check that the engine and transmission control unit as well as the dependent powertrain control units (e.g. CPC3, DCDC48EVO1, ISG48V2, LIB48_223) have the latest software release, and update them, if necessary, then perform another test drive. Note: The latest version of the XENTRY (including all available add-ons) must be used for programming the transmission and engine control unit. Only then can it be ensured that the very latest version of each software is installed. If the problem still persists, the creation of a CAN-FD measurement (successor to SD-SCAN for vehicles with STAR3) may be necessary, when requested. For this, the parts specified in the parts scope and the corresponding XENTRY versions / add-ons are required: • W000589002100 Test box 1 • W223589016300 Adapter cable for vehicles with STAR3 • XENTRY 03/2021 with add-on 19516 • XENTRY 06/2021 with add-on 19604 • XENTRY 09/2021
LI82.85-P-076200
Service Bulletin/Repair Instructions
Complaint Station logos are no longer displayed in the radio after updating or SCN coding the A26/17 head unit. Cause Without active navigation (code 365), MBUX cannot assign and install the regional database of the station logos. Remedy There is no remedy available. The function is not supported and therefore considered normal operation.
OTA - 2025010010
Over The Air
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-25 C-Class, CLA, EQB, AMG GT, EQE, EQS, G-CLASS, GLB, GLC, GLE, GLS, S-CLASS, AMG SL (206, 118, 243, 290, 192, 294, 295, 296, 297, 465, 247, 254, 167, 223, and 232 platform) vehicles, the MBUX multimedia system does not correspond with the latest series production configuration. The MBUX multimedia system control unit will receive an OTA software update. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.
LI46.15-P-078766
Service Bulletin/Repair Instructions
Complaint Play noticeable in the height adjustment of the steering column. See arrow direction in attached pictures. Cause Slipped thrust bearing ring on the height adjustment. Remedy Install repair kit for height adjustment of the steering column. For tightening torque, see attachment.
NCU - 2024110005
Service Campaign
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2021-2023 S-Class (223 platform) vehicles, the lens hood of the multifunction camera may not correspond to current production specifications. The polarity of the wires in the connector housing for the lens hood may be switched. As a consequence, the multifunction camera view may be reduced and a “camera view restricted” message may be present in the instrument cluster. The rear-view camera is not affected. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will check the wiring of the lens hood and replace the lens hood of the multifunction camera if necessary.
OTA - 24P5497813
Over The Air
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-25 C-Class, CLA, EQB, EQE, EQS, G-Class, GLA, GLB, GLC, GLE, GLS, GT, S-Class, and SL (206, 118, 243, 294, 296, 465, 247, 254, 167, 192, 223, and 232 platform) vehicles, the MBUX multimedia system does not correspond with the latest series production configuration. The MBUX multimedia system control unit will receive an OTA software update. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.
LI27.19-P-072588
Service Bulletin/Repair Instructions
Complaint Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick test and/or no communication possible with VGS. Cause Transmission control unit Y3/8n4 Remedy It is important that LI54.15-P-057373 is processed before replacing any component parts (transmission 722.9). After processing and complying with the above documents, perform a reset on the transmission control unit Y3/8n4 (VGS) (ignition reset), check that the transmission connector is seated correctly and inspect the PINs for concerns. If communication with the VGS cannot be established afterwards, the component part 'electrohydraulic controller unit (EHS)' must be replaced, as it is not possible to transfer the valve characteristics under the above-mentioned conditions. Installation of a VGS repair kit is not permitted in this case.
LI82.85-P-078473
Service Bulletin/Repair Instructions
Complaint After a control unit replacement of "N112/9 - control unit for telematics services (HERMES)" or the "N112/2 - control unit for telematics services (RAMSES)", the Digital Extras (previously Mercedes me) cannot be activated. The DTC B15CE00 is active or active+saved. In vehicles with "N112/9 - control unit for telematics services (HERMES)": • The message "SOS - service not activated" permanently lights up in the instrument cluster AND the actual value "Error when replacing certificate (CEP.36)" is displayed in the actual values for the activation status under "Registration status" (see picture 1). • In the control unit log of the "N112/9 - control unit for telematics services (HERMES)", the registration error "CEP Invalid VIN/UniqueID combination" is displayed. In vehicles with "N112/2 - control unit for telematics services (RAMSES)": • The actual value "Error when replacing certificate (CEP.36)" is displayed in the actual values for the activation status under "Registration status" (see picture 1). • In the control unit log of the "N112/2 - control unit for telematics services (RAMSES)", the registration error "CEP_ VIN_UNIQUEID_INVALID" is displayed. The emergency call is not impaired. Cause In the event of a control unit replacement, sporadic problems in the back end could result in data from the new control unit not being updated in the back end system. Remedy Please create a TIPS case. In some cases, the problem rectifies itself on its own after a little while.
LI82.10-P-078069
Service Bulletin/Repair Instructions
Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing fogged/condensed rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4 °F) Note: Do not wash the vehicle or subject it to high-pressure cleaning before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the trunk. 4. Switch on the exterior lighting. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation -> a significant reduction in the formation of condensation must be clearly recognizable (defogging progress). Note: -If no reduction in the degree of fogging is visible, the rear lamp is defective and must be replaced. -It is not physically possible to defog the headlamps completely – some residual fogging may remain. Fogging does not impair the functionality or the service life of the rear lamps. -Simultaneous fogging of multiple component parts indicates extreme climatic conditions and also does not impair the functionality or the service life of the rear lamps. Remedy 2: You can recognize a defective rear lamp as follows: 1. Check the rear lamps to ensure that no external damage is present, and that the differential aeration cells and the diaphragm are present and correctly seated. -> If there are signs of external damage on the rear lamp, the component parts must be replaced as per WIS instructions. 2. Check the electrical connectors of the plugs and pins. -> If moisture/corrosion/etc. is present, the component part must be replaced as per WIS instructions. 3. Check for leak tightness -> Close all openings with Terostat IX or similar and establish and stabilize via an overpressure (40–50 mbar) via the plug. -> In the event of a sudden pressure drop, the component part must be replaced as per WIS instructions. Note: External damage to the rear lamps does not constitute a warranty or goodwill case.
LI27.10-P-075869
Service Bulletin/Repair Instructions
Complaint Only vehicles with a variable transfer case are affected. Can be identified through control unit N45 or N15/7 in the quick test When accelerating with light load, vibrations or jolting sensation may come from the drivetrain Cause Modified oil quality of the transfer case over time Remedy Check initial quick test for faults in the following control units N45 - All-wheel drive (ARS) N127 - 'Drivetrain' (PTCU) control unit Y3/8 - Transmission control for 9-gear transmission (VGS) N3/10 - Engine electronics for combustion engine If faults are present, process them as per the guided test in Xentry If no faults are present: Check the oil level of the transmission If the oil level is correct: Unplug the connector for the transfer cases control unit Reassess the vehicle on a subsequent test drive If the complaint no longer occurs: Perform an oil change of the transfer case according to WIS specifications After please complete all transfer case Tech-in processes located under VG control unit Adaptations tab - Resetting the oil service data - Calibration of N15/7 Perform road test of vehicle to bring transmission to operating temperature ( >60C ) Operate vehicle in full circle with steering at full lock - 5x to the left - 5x to the right Reassess the vehicle following the oil change and teach in If the problem continues to occur with the plug removed or after the oil change has been carried out: Create a TIPS case with the following data Initial quick test with fault freeze frame data EEPROM data from Y3/8 Transmission control unit EEPROM data from N45 All-wheel drive Injector performance data
LI47.70-P-078563
Service Bulletin/Repair Instructions
Complaint -Check engine light(MIL) is ON. -Current and stored fault code in DCCU and PTCU : P2E9873 The position sensor of the exterior socket flap of the vehicle socket (direct current) has an electrical fault. The actuator does not open. -Starting the vehicle or Charging the vehicle is normal without any issues. Cause Software in the "N116/5 - Direct current charge connection unit (DCCU)" control unit. Remedy SW remedy for N116/5(DC-Charging control unit box) is in progress. Once the software is available, update the software for N116/5 and perform SCN coding of N116/5 For this issue, the vehicle starting or charging functions are not typically affected. Do not replace any parts. Replacing parts will not bring a solution for this issue.
LI72.10-P-074316
Service Bulletin/Repair Instructions
Complaint • The flush-mounted door handle could jam when it is pulled out and may move in a jerky manner when doing so. • In the area of the paneling section of the door, paint damage could be present (picture 1) and/or an abrasion point could be present at the door handle (picture 2). Cause The door handle could be installed too low in the y direction and/or the z direction (picture 3); as a result, the door handle could brush the door at the paneling section of the door. Remedy 1.) Loosen screws from bearing bracket (picture 4, step 1). 2.) Remove bearing bracket (see picture 4, step 2) from door. • The door handle must be in pulled-in position. • Open the affected door and push the door lock's rotary tumbler into the main catch. • Lock the vehicle using the transmitter key so that the door handle is pulled in. • Detach plug connector from bearing bracket (center slot). 3.) Paint over paint damage at door paneling (see picture 1) according to manufacturer specifications, using spot repair procedure if necessary. 4.) Loosen old assembly frame (picture 5, step 3). • The assembly frame is bonded. • Remove adhesive residue at front door. • Bonding surfaces must be free of dust, oil, grease, wax, dirt residues and other adhesive components. Otherwise, this can lead to bonding problems. • See "Parts" for part number of cleaning agent. 5.) Position new assembly frame (picture 5, step 3) at door. • Remove protective film of tape at assembly frame beforehand. • The assembly frame (picture 5, step 3) must have the same clearance all around the flange. 6.) Replace door handle, if an abrasion point (picture 2) is present. 7.) Screw in WITOL fasteners (picture 6) completely at mounting points of bearing bracket (picture 7, step 1) and align screws so that they are flush (picture 7, step 2). 8.) Position bearing bracket (picture 4, step 2). • The door handle must have the same clearance all around in relation to the paneling section of the door (picture 8). 9.) Press the bearing bracket firmly against the paneling of the door and tighten the screws (picture 4, step 1) (=> torque: 6 Nm). 10.) Check the positioning of the bearing bracket. If necessary, loosen the screws slightly, readjust the bearing bracket slightly, then retighten the screws (=> torque: 6 Nm).
LI82.35-P-078467
Service Bulletin/Repair Instructions
Complaint Washer fluid system leaks Cause Various possible causes: 1. Washer fluid reservoir itself. 2. Seal on washer fluid pump/washer fluid reservoir. 3. Washer fluid pump. 3.1. Distributor housing leaks. 3.2. Pump fitting leaks. 3.3. Washer fluid hose cannot be snapped into place on pump fitting. 3.4. Washer fluid hose will not stay on pump fitting, although connector OK. 4. Washer fluid line. 4.1 Connector will not stay on pump fitting because it is broken. 4.2 Sealing ring in connector missing. 4.3 Sealing ring in connector fitted, but deformed and therefore leaks. 4.4 Damage to washer line by animal. 5. Seal on heating washer fluid reservoir/washer fluid reservoir. Remedy Replace defective component parts only. Do not replace any adjacent component parts that are intact. Note: Repair kits for washer line hoses do exist to allow patches for line damage.
LI82.85-P-074392
Service Bulletin/Repair Instructions
Complaint Following the software update of the MBUX, the tablet can no longer be connected with the rear seat unit. The tablet cannot be used as usual. Cause The Android software of the tablet is not up to date and cannot communicate with the latest software of the MBUX. Remedy Remedy for Gen1 and Gen2: Update the Android software of the tablet (see instructions in attachment) and head unit A26/17 to the latest version. If the complaint continues to occur after this, please create a TIPS case. Note: Information for Gen1: The tablet's Android software update can be started via the device's system settings (see instructions in attachment). Information for Gen2: To access the device's system settings, the device must be removed from the vehicle and connected to an external Wi-Fi network. (See instructions in attachment).
LI91.16-P-078472
Service Bulletin/Repair Instructions
Complaint When driving on rough ground, there may be noises from the 4-way head restraint of the front seats. The fault profile is not present at the limit stops (head restraint entirely retracted or entirely extended). Cause Head restraint has increased play between the worm and gearwheel in the head restraint mechanism. Remedy Check play/noise (see video attachment, headrest OK/headrest not OK). Please exchange the head restraint in the event of a not OK result.
NCU - 2022070004
Service Campaign
Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2018 - 2024 E-Class, S-Class & AMG GT (213, 217, 222, 223 and 290 platforms) vehicles, the low pressure fuel line does not meet current production specifications. Therefore, it is possible that accelerated aging in the area of connection could occur, resulting in a leak. A risk of fire can be ruled out. MBUSA will conduct an Emission Service Campaign. An authorized Mercedes-Benz dealer will replace the braided hose of low-pressure fuel line and install a heat shield over the new braided hose.
LI15.40-P-077947
Service Bulletin/Repair Instructions
Complaint Combustion engine could no longer be started, only electric driving possible. Cause High-voltage belt-driven starter-alternator faulty. Remedy Requirement: Prior to the implementation of the test work, it must be ensured that the person carrying out this work has successfully completed the required HV qualification to work on HV system.
LI54.71-P-078498
Service Bulletin/Repair Instructions
Complaint "Active Emergency Stop Assist Currently Unavailable" and "Active Steering Assist Inoperative" instrument cluster messages along with Tire Pressure Light on in Instrument Cluster. Cause Both systems are temporarily unavailable due to low tire pressures. An active tire pressure monitor light may result in some assistance features being temporarily unavailable until tire pressures are corrected. Remedy Check/adjust tire pressures and reset monitoring through the instrument cluster.
LI27.00-P-074450
Service Bulletin/Repair Instructions
Complaint Tension-releasing impact of the propeller shaft with the force-free in D "KID" function, after vehicle has stopped. Cause The tension-releasing jolt in the drivetrain originates as a result of the "release" of energy stored when braking through the force-free switch after stopping. It is suspected that the longitudinal bearing is being placed under tension here as a result of the vehicle "dropping off". Remedy 1. Mark the installation position of the joint prior to the removal (picture a+b). This is important for vehicles with a weighted drivetrain ex factory to ensure correct installation after operations have been completed. 2. Clean and degrease propeller shaft toothing. The toothing must be free of grease, e.g. through the use of a brake cleaner. Do not use wire brushes, else the surface could be damaged (picture c). 3. Coat propeller shaft toothing with A 000 989 16 08 Antifriction coating. Coat the entirety, ensuring that the subsurface is no longer visible. When doing so, only coat the outer toothing. Ensure that the coat is not too thick, otherwise the coating could chip (picture d). 4. Observe the drying time of at least 1 hour. 5. Lightly grease the propeller shaft toothing at the outer and inner toothing with A 001 989 44 51 12 Grease (picture e).
LI82.70-P-077433
Service Bulletin/Repair Instructions
Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. Cause A. Seating of the microphones in the headliner. Side edges are covered by the textile cover (see picture "1") B. Assembly of microphones (B25/20 or B25/21) in the headliner. C. Dirt inside the microphone housing Remedy 1. Press finger on rear of microphone (on adhesive tape) 2. Remove microphone cap from the front 3. Eliminate protruding material residues of the microphone cutout at the headliner, e.g. with a soldering iron. The microphone must be seated in the headliner as shown in picture "2". 4. Push microphone from behind until it is firmly pressed into the headliner 5. Maintain pressure and press/clip cap into microphone from the front. Note: The cover cap must be clearly heard and felt to engage. 6. This procedure must be carried out on both microphones (B25/20 and B25/21) Note: • It is recommended to replace the cover caps. • The non-woven cloth in the cover cap protects the microphone from soiling and must not be removed. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.
2024080004
Service Campaign
Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2024 S-Class and EQS (223 and 297 platform) vehicles, the DRIVE PILOT Supplemental Booklet does not correspond to current production specifications. What We’re Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will replace the DRIVE PILOT supplemental booklet.
LI82.10-P-078307
Service Bulletin/Repair Instructions
Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A leak test must be performed to determine if physical fogging exists or if the headlamp is leaky. Remedy In advance, observe LI82.10-P-078301 "Headlamps or Front Fog Lamps Leaking or Fogged". 1. Prepare headlamp/check for external damage: For headlamps with a closed system 1. Check the headlamps for any external damage and check also for correct seating of the Gore-diaphragm/correct latching of the cover caps. 2. If the headlamp exhibits any external damage, replace the headlamp. For headlamps with an open system 1. Check the headlamps for any external damage and seal off the vent then make sure the cover caps are latched correctly into place. 2. If the headlamp exhibits any external damage, replace the headlamp. Note: A headlamp with external damage is not a warranty or goodwill case. 2. Leak test of headlamp with overpressure: • Connect test adapter to pressure tester. (Figure 1) • Check test adapter for leak tightness. To do so, connect plug and coupling (picture 2) and apply a maximum overpressure of 30 mbar. The pressure must remain constant. If the pressure does not remain constant, use a new adapter. • Seal all the outlet openings using sealing compound and the given diaphragm with the plunger (picture 3). (Picture 4) Make allowance for the different headlamp variants here (there are different outlet openings). • Check if the headlamp needs to be removed to gain access to the diagnostic socket on the headlamp housing. • Plug the adapter onto the diagnostic socket on the headlamp housing. (Picture 5). • Apply a maximum of 30 mbar overpressure to the headlamp housing. Note: If the maximum overpressure of 50 mbar is exceeded the headlamp seal will be damaged. • If a pressure drop of less than 10 mbar is measured within 30 seconds, the headlamp is not leaky and the problem is down to natural physical fogging. • If a pressure drop of more than 10 mbar is measured within 30 seconds, the headlamp is leaky. Note: The leaky position can be localized with the aid of soap suds. Replace any leaky headlamps. Note: Desiccant packs can be installed for headlamps that are not leaky. See: • LI82.10-P-064766 Fogged headlamp, desiccant pack installed - open ventilation system • LI82.10-P-078304 Fogged headlamp, desiccant pack installed - closed ventilation system
LI82.90-P-078381
Service Bulletin/Repair Instructions
Complaint Display dark (total or partial) of one or more ASCM (AMG) steering wheel button displays - see attachment. Note: There is no loss of vehicle functionality due to this complaint. Cause Software can cause a partial display on the ASCM. Remedy Please perform the following steps in the event of a total or partial display of the ASCM displays: 1. Perform a hard reset (disconnect power supply) of control unit A74/2 (ASCM) for 2 minutes. 2. Perform a software update of the A74/2 (ASCM), N145 (DRVU) and A26/17 (HU). 3. Reset the user profile via the head unit settings menu. (Full factory reset)
LI82.85-P-078303
Service Bulletin/Repair Instructions
Complaint Individual functions such as sliding sunroof or roller sunblind can no longer be operated using the gesture recognition system. Cause Gesture recognition system control unit software N168 Remedy For vehicles before modification year 23/2: A remedy is currently being developed. Replacing parts will have no effect. For vehicles as of modification year 23/2: Considered to be a series production configuration. A change will not be possible in future.
LI82.10-P-078301
Service Bulletin/Repair Instructions
Complaint Headlamp or front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. Headlamps comply with all applicable standards. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps and LED rear lamps: 1. Drive vehicle into workshop (temperature higher than +18 °C/+64.4 °F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood or trunk. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4°F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in the formation of condensation, check the headlamp for a defect. (See Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Remedy 2 A Damaged headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness in accordance with LI82.10-P-078307. The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. Open ventilation system: LI82.10-P-064766. Closed ventilation system LI82.10-P-078304
LI98.00-P-078106
Service Bulletin/Repair Instructions
Complaint Damage or discoloration to paint protection films on vehicle. Cause Chip protection films are a wear item that may need to be replaced over the life of the vehicle. They are typically not covered by vehicle warranty. Remedy To properly install a paint/chip protection film, please follow the below guidelines: #1 - Utilize a solution that is 0.2% soap solution (1,000ml of water + 2ml of liquid soap). #2 - Clean the paint surface and ensure it is dust-free. #2a - When cleaning, you can utilize isopropyl alcohol (Rubbing Alcohol) to assist with cleaning. #2b - We recommend a lint-free rag for secondary dusting. #3 - Wet hands with the soapy water solution to protect the adhesive surface. #4 - Remove the backing paper from the film completely. #5 - Moisten the vehicle surface with the soapy water. You can also lay the protective film with adhesive side out onto the wetted surface to also cover the adhesive layer in the soapy water solution. #6 - Remove film and flip over to gently place adhesive side against the paint surface. #7 - Working from the center out, use a squeegee to press the soapy water solution out from under the film. Use sufficient pressure to firmly press the film into the paint surface, but not an excessive amount to damage or stretch the film. #8 - Allow film and paint to "cure" until all of the moisture has evaporated. At this time the adhesive should be dried and cured enough for sufficient hold to release the vehicle.
LI27.00-P-075630
Service Bulletin/Repair Instructions
Complaint To insure vehicle down time is kept at a minimum and all required information is available when case is escalated, as well as assist technicians with checks that may help lead in resolving issue without case creation. THIS LI IS NOT TO BE USED AS A REASON FOR CASE CREATION BUT AS A GUIDE IF A CASE IS NEEDED Cause There are, at times, additional steps workshops can do to help diagnose and rectify transmission complaints. Remedy When opening a case for transmissions a EEPROM, Quick Test, and VGS CUL are absolutely necessary Please also check for any relevant LI’s before opening case. Also, recommend having customer fill out Transmission Drivability Diagnostic Worksheet especially if complaint is hard to reproduce or intermittent (Work sheet Location: Xentry Portal >> Local Contents >> Diagnostic Info>> Diagnostic Worksheets ) If a previous repair attempt or visit was made for the same concern please include the date, mileage, and case number if applicable of that repair/visit with a short description of what was done. Follow IPR: ( LI27.00-P-073124 ) All IPR suggestions are covered by warranty and there is no need for cases to confirm IPR. Complete IPR suggestions and close out IPR process. If complaint is not fixed and IPR still suggests the same repair once closed out and run again, then a case may be needed. Transmission Health page is a good indicator of issues within transmission if clutch or brake pack stays NOK after adaptions and unable to be made to a green OK then an internal fault is present. Proceed with replacing affected clutch pack. IF more than 3 are red and NOK replace transmission (include printout with warranty claims) **** FOR 167 chassis with M264 engine B08 may be red and NOK, IGNORE this, B08 is still okay **** Shift complaints: Note: AMG variants are known to have a harsher shift see LI27.60-P-075147 It is always worth comparing to a like vehicle if possible to see if shift is uncharacteristic Perform Valve flushing procedure Perform 5 Torque Converter adaptions in a row (Save the results page) Perform standstill adaptions (Save the results page) Drive adaptions if necessary: Drive C mode keep RPM between 2000-2200rpm and lightly let off pedal to force shift wait 2-3 sec then roll on throttle to rpm back up to 2000-2300 rpm repeat for gears 1-3 *For gears 4-8 allow rpm up to 2700 and let off slightly to force upshift = repeat x 10 *For downshift - highest gear possible 8 or 9 - allow decel with light brake drag (allow at least 5s between downshifts for trans to adapt. Go down to 2nd and repeat x10 *Change to sport mode and repeat process again *Lock car to allow sleep at least 10min and restart and road test for quality. After adaptions a new EEPROM should be recorded and included with the original if opening a case Understand shift complaints need to be reproducible to address. If needed drive with client to reproduce the complaint. If shift complaint is intermittent a CAN trace of the issue occurring will be useful (see attached instructions) Shudder: If there is a shudder monitor torque convertor actual values to see if it occurs during slipping, Additionally can lock up convertor and drive to see if issue is resolved Jolting/Shudder: If the vehicle is AWD: unplug AWD control unit or drive vehicle in dyno mode to see if transfer case is causing the jolt/ harsh shift If located from transfer case check fluid and perform a flush if needed to try to rectify the issue. Vibrations: NVH trace is needed, what level vibration is being experienced and where is it located? Is the Vibration felt in neutral? Dyno mode? Does it change with speed? Etc. Noise complaint: Isolate the noise location using chassis ear. MUST attach a sound recording or video of the noise. Describe when the noise is present: Does it change with gear or speed? Does it occur with vehicle in neutral or in glide mode? Does operating temperature effect noise? Does incline/decline or steering angel effect noise?
LI82.10-P-078304
Service Bulletin/Repair Instructions
Complaint Headlamps fogged or droplets forming. Cause Due to the housing cover with pressure compensation diaphragm, the headlamps are a "closed system". This means that the headlamps are protected against acid gases, dirt and exhaust gas. However, moisture can still enter from two sources. Through absorption and desorption (the commonest cause) or through permeation. Moisture is either absorbed by the plastic material and, when the light source is switched on, it is released from the plastic by desorption, or the moisture penetrates through the plastic materials of the headlamp from outside (permeation). This can lead to the formation of condensation on the lens of the headlamp. The headlamps comply with all applicable US standards and regulations. Remedy Check headlamps for natural fogging or condensation as per LI82.10-P-078301. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the condensation has completely evaporated. Note: Order service covers and desiccant packs based on the validity description. 1. Remove existing service cover with diaphragm (Picture_01 (1)). 2. Insert desiccant packs (Picture_01 (2)) into new service covers with diaphragm and seal with protective grille and bolt down (Picture_01 (3)). Note: One desiccant pack is required for each small service cover, and two desiccant packs are required for each large service cover. 3. Stick the supplied diaphragm onto the new service cover and attach at the headlamp. Note: The bonding surface must be clean and dry. 4. If the headlamp housing has an additional 2nd diaphragm, this must be covered over with masking tape. Note: The bonding surface must be clean and dry. To ensure that the desiccant pack (absorption) acts effectively, the headlamp has to be air-sealed. Observe or check the following points for this: 1. Seals at the central connector must all be present and correctly fitted (Picture_02). 2. The new transparent diaphragm must be correctly bonded (Picture_03). 3. Check headlamp housing for any external damage.
2024080006
Service Campaign
1. Connect XENTRY Diagnosis. 2. Update Fuel System Control Unit (FSCU10) software. To do this, select menu item "Quick test view . N118/3 – Control unit ‘Fuel pump’ (FSCU10) . Adaptations . Control unit update . Updating of control unit software". Then follow the user guidance in XENTRY Diagnosis. 3. Disconnect XENTRY Diagnosis.
OTA - 20240830
Over The Air
Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-24 C-Class (206 platform), EQE (294 and 296 platform), EQS (295 and 297 platform), GLC (254 platform), AMG GT (192 platform), S-Class (223 platform), and AMG SL (232 platform) vehicles, the communication module software does not correspond with the latest series production configuration. The communication module will receive an OTA software update that includes product improvements. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit. All customers will be mailed a letter informing them of this software update.
LI54.10-P-076026
Service Bulletin/Repair Instructions
Complaint Yellow information message in driver display (instrument cluster): "Switch on motor to charge the 12V battery" Cause The state of charge (SOC) of the 12V battery has dropped to 45% or less. Remedy This warning message appears as soon as the state of charge (SOC) of the 12V primary battery drops below 45%. This message is displayed to safeguard the vehicle's starting ability. At the same time as the display appears in the instrument cluster, customers with a linked Mercedes me connect account also receive a push notification via the app/by email (if this function is activated). The battery must be charged to a state of charge (SOC) of at least 50%. To do this, an external charger can be connected (please comply with AR54.10-P-1133S) or the vehicle can be driven (by the customer) for 30 to 60 minutes. Please make customers aware of how the vehicle behaves: • If the vehicle is used for short journeys, the battery state of charge may slowly drop to less than 45% – a negative charge balance • A negative charge balance will also occur if the vehicle is used while stationary without running the engine, e.g. if the head unit is used, the ignition is switched on, or other comfort & convenience power consumers, e.g. seat heating/seat ventilation, are active. • An unlocked vehicle may increase consumption, because certain vehicle functions are actively kept ready for the customer. In combination with Keyless-Go or flush-mounted door handles, the vehicle may be woken up if the vehicle key is detected in the vicinity of the vehicle. The cause of the discharge can be identified with the aid of the onboard electrical system data in the EZS using XENTRY Diagnosis. See attached examples for identifying typical customer situations (e.g. operation with ignition on, operation of head unit while stationary or vehicle unlocked while parked).
LI47.70-P-078127
Service Bulletin/Repair Instructions
Complaint Vehicle not AC charging. Check engine light on. PTCU/N127 with fault code P0D9100 "The lock for the charging cable has an open circuit". Cause Possible Hardware and/or Software. Investigation is ongoing. Remedy Please open TIPS case. TIPS case: Needed customer feedback: When did the complaint/IC message occur? While driving and /or charging / or parking? If the complaint occurred while charging, how long after did the complaint/IC message occur? Which charging station was used, which provider (picture if possible)? Attach HV CUL and QT to the case Attach picture of label of AC charger to the case Attach screenshot of AV AC charger Provide the results of the test below Test: Verify AC charging Erase fault codes and verify if fault code P0D9100 “The lock for the charging cable has an open circuit” returns Check AV of AC charger
LI54.30-P-073761
Service Bulletin/Repair Instructions
Complaint The oil level is not correctly displayed while the instrument cluster display is in workshop mode. The oil level is reported in an inverted fashion when a correction is carried out. I.e. instead of an instruction to refill the oil quantity, an instruction to reduce the oil level is displayed, or vice versa. Cause Previous software release for instrument cluster control unit (N133/1) Boot software A2239049101, A2239046801, A2239040802 Remedy Update instrument cluster control unit (N133/1) software using XENTRY Diagnosis
LI82.85-P-077242
Service Bulletin/Repair Instructions
Complaint Once the head unit A26/17 is updated to the FUP4 software release E445.0, it may be the case that online connectivity is no longer available Cause E445.0 FUP4 software release Remedy Update the A26/17 - MBUX multimedia system (Head unit) software to E445.2 FUP4 Optimized or newer version to resolve the complaint.
LI82.70-P-075186
Service Bulletin/Repair Instructions
Complaint Customer states that wireless Apple Carplay does not initiate at start-up. The MBUX Display states "Apple Carplay could not be started. Your device has been connected as a bluetooth phone" Cause Previous MBUX Multimedia System (A26/17) software Remedy Update the MBUX Multimedia System (A26/17) software to version E330.x or newer.
LI82.60-P-078155
Service Bulletin/Repair Instructions
Complaint Radio reception interference and the following DTCs are displayed in the A26/17 - MBUX multimedia system control unit as "active and stored": • B19B313 - Antenna 1 open load • B19B413 - Antenna 2 open load • B19B513 - Antenna 3 open load • B19B613 - Antenna 4 open load Cause Antenna amplifier Remedy Replace the antenna amplifier.
LI82.10-P-078070
Service Bulletin/Repair Instructions
Complaint Digital light pop-up messages (warnings, notes, spotlight and dyn. low beam) appear in the instrument cluster (picture in attachment), even though the same digital light settings are stored in all MBUX profiles Note: The pop-up messages are intended to indicate different settings when changing MBUX profiles Cause - ECU software error Remedy - Reset MBUX to manufacturer default settings. Software update expected to be available YoM24/2 (Year of Modification - Code can be found in VeDoc): - A26/17 - MBUX multimedia system (head unit) -This document will be updated when the software is available.
LI82.85-P-077914
Service Bulletin/Repair Instructions
Complaint Mercedes me connect services inoperative (me-Call, Remote Status, etc.). Mercedes me services - activation not possible Notes: - The event code "B129C00 - Malfunction in control unit for telematics services" is active and stored - The head unit shows no internet connection Cause Under analysis. Remedy Please create a TIPS case, attach a RAMSES control unit log to the case.
LI82.85-P-077973
Service Bulletin/Repair Instructions
Complaint Child seat detected message is shown in the central display and no child seat is installed on the front passenger seat at the time the display message is shown. Cause In certain circumstances, the gesture recognition system may interpret the occupancy status as a child seat present. The following possible conditions may lead to this: 1. Front passenger seat occupied by passenger 2. Object on front passenger seat, e.g. bag or backpack 3. Front passenger seat not occupied The gesture recognition system uses optical imaging to assess the front passenger seat and whether it is occupied and is independent from the occupant classification system input used for airbag deployment. The gesture recognition assessment has no connection to the airbag system. As this is an optical measurement, in certain circumstances a child seat message may be displayed based on the results of the interpretation. There is no influence on airbag system. There is no connection to airbag system. Remedy Software update of control unit N168 - Gesture recognition system OMSH223
LI46.10-P-078012
Service Bulletin/Repair Instructions
Complaint Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy Test Procedure: Perform an initial quick test with freeze frame data. Save the N179 - Hand detection system (HE) and N62/4 - Driver assistance system (SG-FAS) control unit logs. Note the fault frequency of fault codes set. Delete the N179 and N62/4 fault memory. Using both hands, "scan" the steering wheel all the way round, including the chrome molding at 6 o'clock (see Picture 1). Read out fault memory and follow steps below for any faults set. Remedy: Vehicles with control unit N179 - Hand detection system (HE): B1E7614: Check contacts and wiring harness in steering wheel by carrying out a visual check for damage, pinched areas, loose connections, etc. (examples in Figs. 2 and 3); If no damage is noted replace the N135 - Steering wheel electronics (LRE) and reassess. If fault code returns replace the steering wheel. Please check the wires and connections in the steering wheel. Afterwards, please check whether the complaint is caused by over torqued screws on steering wheel trim pieces. To do this, please loosen the screws slightly and reevaluate the situation. (Picture 4). P164456: Perform SCN coding. P1CA000: Perform an initial start-up on the N179 hand detection control unit. Faults in N62/4 - Driver assistance system (SG-FAS) control unit with U186B29, U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the N179 control unit: Scan steering wheel as indicated in the test procedure and check whether the fault is reproducible. If no fault code is stored in the hand detection control unit, the fault codes in the driver assistance systems control unit are precautionary messages. Software for the N62/4 - Driver assistance system (SG-FAS) is in preparation to reduce erroneous messages in the driver display.
LI27.00-P-073124
Service Bulletin/Repair Instructions
Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G-TRONIC automatic transmission) and 725.1 (NAG3 facelift/9G-TRONIC automatic transmission facelift) For faster, more effective and more targeted diagnosis, Intelligent Predictive Repair (IPR) has been developed and integrated into XENTRY Diagnosis. This ensures an automated diagnosis process. Cause As part of the on-going quality monitoring process and associated quality and damaged part appraisals, a high number of ineffective repairs have been discovered. Such ineffective repairs have a negative impact on all those involved. For the customer, it means high costs and long repair times and for the dealer, it may result in the warranty claim being rejected. Remedy General note: IPR is available for: ·NAG3 Classic (automatic transmission 725.0) ·NAG3 - AMG sports models (AMG 43 and AMG 53 with converter) ·NAG3 - AMG 63 ·NAG3 - Hybrid
LI82.60-P-077958
Service Bulletin/Repair Instructions
Complaint USB port data storage medium is not recognized, but charging function is still available. We are only aware of this complaint in a few isolated cases and it only occurs intermittently (not in every driving cycle). Cause Multimedia connection unit Remedy Replace the multimedia connection unit. Affected item numbers: A 214 820 81 00 A 223 820 14 05 Manufactured before 10/2023 modified parts have been manufactured since 10/2023.
LI47.70-P-077900
Service Bulletin/Repair Instructions
Complaint • Red display in the Charging indicator status in MBUX during AC Charging. • Error message in Mercedes Me App. • Fault code P0E5F97 exists in N83 (AC charger for high-voltage battery (SG-LG)) Cause The message/indicator status appears when the vehicle is parked outside, under direct sunlight or in higher temperature regions. Remedy • Not an error. Vehicle charging continues and does not abort. Charging power might be reduced temporarily until the temperature comes within threshold. • Do not replace any components. • Please inform the customer: Park the vehicle in the shade during charging where the outside temperature is lower.
LI07.61-P-070707
Service Bulletin/Repair Instructions
The customer complains of a check engine light (CEL) on. May also complain of the engine running roughly and/or a loss of power. Multiple Causes Remedy Please see the document "Remedy Instructions" in attachments. For MY19+ G63 there may be an alternate solution available. Please reference LI07.61-P-076755 before performing the steps in this LI.
OTA - 20240502
Over The Air
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 22-24 C-Class, EQE, EQS, GLC, S-Class, SL (206, 294, 295, 296, 297, 254, 223, 232 platform) vehicles, the communication module software does not correspond with the latest series production configuration. The communication module will receive an OTA software update that includes product improvements. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.
NCU - 2024040008
Service Campaign
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-23 C-Class and S-Class vehicles (206, 223 platform), the software for the ISA control unit may not correspond with the latest series production configuration. The possibility exists that the function of the ISA may not be restricted with an active Malfunction Indicator Lamp. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the ISA control unit software in the affected vehicles.
OTA - 20240503
Over The Air
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-24 C-Class, CLA, EQB, EQE, EQS, GLA, GLB, GLC, GLE, GLS, GT, S-Class, and SL (118, 167, 192, 206, 223, 232, 243, 247, 254, 290, 294, 295, 296 and 297 platform) vehicles, the MBUX system software does not correspond with the latest series production configuration. The MBUX system will receive an OTA update that includes general product improvements and robustness enhancements for a better entertainment experience. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.
LI82.85-P-077312
Service Bulletin/Repair Instructions
The update of the RAMSES 1.1 module to the SW version E139.4 results in a fault in the vtime of the module and therefore to the following possible connection problems: Remote status: The time stamp of the last update that is displayed on the side of the sheet with the vehicle status contains the wrong information. Geofence: Geofence notifications are not sent if vtime is invalid. Programming of charging settings: The update timestamp on the side of the sheet with the loading settings features an incorrect timestamp. The timestamp for the end of the charging process would contain the wrong information. The status and end of the charging process are not displayed. The function itself is not affected; only the timestamps are incorrect. Pre-entry climate control: The time stamp of the last update that is displayed on the side of the sheet with the vehicle status contains the wrong information. The next departure time would be affected. The function itself is not affected; only the timestamps are incorrect. NOTE: The functionality of the eCall system is not affected. RAMSES 1.1 software E139.4. Perform a SW update of the RAMSES 1.1 module to the latest E139.5 software.
OTA - 24240302
Service Bulletin/Repair Instructions
This is to notify you of the Service Campaign OTA update for the MBUX control unit software in 14,559 Model Year (MY) 21-23 C-Class, S-Class, SL, EQS (206, 223, 232, 297 platform) vehicles. The vehicles will not be visible or flagged in VMI or EVA. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-23 C-Class, S-Class, SL, and EQS vehicles (206, 223, 232, 297 platform), the MBUX System software does not correspond with the latest series production configuration. The MBUX control unit will receive an OTA update that includes functional improvements and new features such as: Dolby Atmosî, video streaming, personalized images on the front passenger display, and additional commands for the MBUX Voice Assistant. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customerâÂÂs vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.
LI00.20-P-077615
Service Bulletin/Repair Instructions
The following symptoms may be present in the instrument cluster: 1. "Perform vehicle handover" in the workshop menu to start the maintenance computer for service A/B cannot be carried out. 2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. Routine change in software in instrument cluster N133/1. Vehicle handover has not taken place. First manually commission the already installed instrument cluster control unit N133/1 and then perform the special procedure to re-initialize ASSYST data in powertrain control unit N127. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicleâÂÂs warranty in any way.
LI72.20-P-075746
Service Bulletin/Repair Instructions
Tailgate opens unintentionally. Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket, handbag etc. Remedy As of the 6th generation, the vehicle key can be recoded so that the tailgate no longer opens as a result of a long press on the button, but by double-clicking on the button instead. The recoding can be carried out as follows: 1. Add AO code O19 in VeDoc (O as in the letter "O" for Oscar, not the number "0"/zero) 2. EZS N73: Perform SCN coding 3. Deactivate the vehicle key (a successful deactivation is indicated by the LED lighting up 2x briefly and then 1x for a long period). 4. Place the vehicle key on the key symbol in the storage compartment and then switch on the ignition. All other vehicle keys must be outside of the vehicle when doing this! Perform steps 3 and 4 successively for all vehicle keys. Notes: 6th, 7th and 8th generation keys can be deactivated as follows: Up to modification year 22/1, by double-clicking on the locking button
LI82.88-P-077552
Service Bulletin/Repair Instructions
Change in the login procedure for the payment service in the integrated toll system. The change will become active on 3/1/2024. Updated login procedure to simplify activation of services To activate the toll system control unit, a service activation must be implemented by the customer for the payment method (credit card information) to be transmitted to the service provider and their terms and conditions to be accepted. Previously, the activation process took place via the Toll Service app in the head unit. In future, the service activation will instead take place via the website of the Payviam service provider. (Figure 1) For a duration, the Toll Service app will provide a link to the service activation page via URL text and via QR code: (Figure 2) URL: https://www.payviam.com/MB QR code: see attachment Additional information: - Between 24 - 48 hours after the registration of the service, the service will be operational and the system will be able to be used. - UI operation in the vehicle settings: -UID serial number is the number that is required for the activation of the service (Figure 3) -Number of passengers - is determined automatically: In California, the toll amounts depend on the number of passengers. If this option is activated, this is automatically taken into account by the system by means of belt and weight sensors.
OTA-24240203
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âÃÂÃÂMBAGâÃÂÃÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 21-24 C-Class, EQE, EQS, GLC, GLE, GLS, S-Class, SL (206, 294, 295, 296, 297, 254, 167, 223, 232 platform) vehicles, the MBUX System software does not correspond with the latest series production configuration. The MBUX control unit will receive an OTA update that includes functional improvements and new features such as: Dolby AtmosÃÂî, video streaming, personalized images on the front passenger display, and additional commands for the MBUX Voice Assistant. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customerâÃÂÃÂs vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.
OTA-24240201
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âÃÂÃÂMBAGâÃÂÃÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY20-23 A-Class, C-Class, CLA, CLS, E-Class, GLA, GLB, GLC, GLE, GLS, AMG GT, S-Class (177, 205, 118, 257, 213, 238, 247, 253, 167, 290, 217, 222 platform) vehicles, the communication module system software does not correspond with the latest series production configuration. The communication module will receive an OTA update to improve the system stability and allow for better accessibility of Mercedes me services. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customerâÃÂÃÂs vehicle free of charge and do not require a dealer visit. All customers have been mailed a letter informing them of this OTA software update.
OTA-24240202
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-23 S-Class, EQS (223, 297 platform) vehicles, the air suspension system software does not correspond with the latest series production configuration. The air suspension system will receive an OTA update to optimize the system and improve the ground clearance, especially during parking. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customerâÂÂs vehicle free of charge and do not require a dealer visit. All customers have been mailed a letter informing them of this OTA software update.
LI07.10-P-077327
Service Bulletin/Repair Instructions
Customer states that the vehicle's engine will turn off when coming to a stop in ECO Stop/Start mode, and will not restart. Software version Update software to latest version. This will include software numbers: 1769022203 1769023903 If this software is not present, the vehicle may already be updated with the newer software variant. In this case, check the vehicle's software history in VeDoc to confirm the newer software variant was previously installed. If the customer reports the complaint and the newer software is installed, open a TIPS case and reference this LI. If the customer reports the complaint and the newer software is not installed, update the ME to the latest software. Clear the codes and road test the vehicle in comfort mode with ECO start/stop enabled for at least 50 miles. The drive should be on normal surface streets (no steady-state cruising on the highway) and should include several complete stops and ECO start/stop events. If the complaint is no longer present, release the vehicle. If the complaint reoccurs, open a TIPS case with your results and reference this LI.
LI46.10-P-077313
Service Bulletin/Repair Instructions
The steering wheel generates grinding noises between the steering wheel and steering column switch module during steering maneuvers See example file in the attachments area: Lenkrad-Schleifgeräusch_SteeringWheel-GrindingNoises.mp4 The plastic cover on the back of the steering wheel is not positioned correctly and may therefore rub against the steering column switch module Please use the following noise files for the damaged part analysis: 1. Grinding noise | pot. cause: steering wheel | see attachment: Lenkrad-Schleifgeräusch_SteeringWheel-GrindingNoises. mp4 2. Creaking/cracking noise | pot. cause: steering column switch module | see attachment: MRSM-Schleifgeräusch_ SCCM-GrindingNoises.MOV If the noise is due to the steering column switch module, please use LI46.10-P-077314. Check for grinding areas on the steering wheel: Please check the covers on the rear for protrusion and, if necessary, remount. 1. Mask off openings on back of steering wheel with adhesive tape 1. Mark the back of the steering wheel with colored chalk (see Picture 1) 2. Mount steering wheel on steering column switch module and turn the steering wheel from left lock to right lock ten times. 3. The chalk will now have disappeared in the areas where there is rubbing (see Picture 2) Warning: Ensure that no cables and visible areas of the steering wheel are damaged. The abrasive excess material on the back of the steering wheel must be carefully removed with a Dremel tool. Tip: You will need to remove approx. 0.1 mm to 0.3 mm of material (example: Picture 3) Make sure that none of the ground-off material gets into the steering wheel. After removing the material, clean the entire back of the steering wheel with a 1% soap solution.
LI46.10-P-077314
Service Bulletin/Repair Instructions
Noises in the steering column area when steering. Under analysis. Check which area of the steering column the noises occur in. Do the noises tend to occur at the bottom in the driver footwell or do they tend to occur in the area of the steering column switch module (MRSM/SCCM)? If the noises occur in the area of the MRSM/SCCM, work through the following points: - Loosen screws of the MRSM/SCCM and steering wheel, re-align the MRSM/SCCM, and re-fasten the screws (see WIS). Sometimes there is stress at the MRSM/SCCM and noises occur. - If noises continue to occur, swap the MRSM/SCCM into a vehicle without any (noise) complaints. - If the noises occur with the MRSM/SCCM complained about when it is in the vehicle without a complaint (donor vehicle), the MRSM/SCCM can be replaced. - If noises also occur in the customer vehicle with the MRSM/SCCM from the reference vehicle, the MRSM/SCCM is not the cause and must not be replaced. Notes: - When installing the MRSM/SCCM, make sure that no damage occurs! - Only disassemble and mount all component parts in the "straight-ahead position" (see also WIS). - Please refer to this LI in the "Notes" section of the warranty claim!
LI68.10-P-077315
Service Bulletin/Repair Instructions
Front armrest cap (butterfly compartment) only opens when pressed strongly. Unfavorable tolerances Place two pieces of felt (12mmx12mm) on the trigger mechanism as seen in the attached picture. This will reduce the distance between the pushbutton switch and the trigger mechanism.
NCU-OTA MBUX SW
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2021-2023 C-Class, EQE, EQS, GLC, S-Class, and SL (206, 294, 295, 296, 297, 254, 223, and 232 platform) vehicles, there is a new software release for the MBUX Infotainment system. This OTA update includes functional improvements and eliminates software errors for a better entertainment experience. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customerâÂÂs vehicle free of charge and do not require a dealer visit. A letter will be mailed to included customers informing them of this software update.
CL-AirSuspension
Service Bulletin/Repair Instructions
On behalf of Mercedes-Benz USA, LLC (MBUSA), thank you for being a part of the Mercedes-Benz family. We hope that youâre enjoying your vehicle. Here at MBUSA, we are committed to delivering an exceptional ownership experience. In our continuing efforts to ensure the proper performance and quality of your vehicle, we are writing to inform you about an Over-the-Air (OTA) Service Campaign to update the Air Suspension System Software on certain Model Year 2021-2023 S-Class and EQS vehicles. This update will optimize your vehicleâs Air Suspension System and improve its ground clearance, especially during parking. This OTA update will be provided free of charge and will be performed in the background. No action is needed on your behalf. Your vehicle does not appear to have an active âMercedes me connectâ subscription. In this case, the OTA update will be performed unless you choose to opt-out from receiving this OTA update. What will your Dealer do? NO DEALER ACTION IS NECESSARY for this OTA update. You do not need to visit a Mercedes-Benz dealer. Opting-out of this OTA Update: Customers who are not subscribed to the Mercedes me connect service may opt-out of this OTA update by emailing or by calling 1-800-FOR-MERCEDES. The opt-out period will start on January 5, 2024 and end on February 4, 2024. If you choose to opt-out, the described update will not be available for your vehicle as an additional workshop measure. No action is necessary for Opting-In. Once the opt-out period has closed on February 4, 2024, this OTA will be automatically downloaded and installed. Thank you for allowing us to continue taking care of your vehicle.
CL-CommMod
Service Bulletin/Repair Instructions
Dear Mercedes-Benz Owner: On behalf of Mercedes-Benz USA, LLC (MBUSA), thank you for being a part of the Mercedes-Benz family. We hope that youâÂÂre enjoying your vehicle. Here at MBUSA, we are committed to delivering an exceptional ownership experience. In our continuing efforts to ensure the proper performance and quality of your vehicle, we are writing to inform you about an Over-the-Air (OTA) Service Campaign to update the Communication Module software on certain Model Year 2020-2023 A-Class, C-Class, CLA, CLS, E-Class, GLA, GLB, GLC, GLE, GLS, AMG GT, and S-Class vehicles. This update will improve the system stability and allow for better accessibility of Mercedes me services. This OTA update will be provided free of charge and will be performed in the background. No action is needed on your behalf. Your vehicle does not appear to have an active âÂÂMercedes me connectâ subscription. In this case, the OTA update will be performed unless you choose to opt-out from receiving this OTA update. What will your Dealer do? NO DEALER ACTION IS NECESSARY for this OTA update. You do not need to visit a Mercedes-Benz dealer. Opting-out of this OTA Update: Customers who are not subscribed to the Mercedes me connect service may opt-out of this OTA update by emailing or by calling 1-800-FOR-MERCEDES. The opt-out period will start on January 5, 2024 and end on February 4, 2024. If you choose to opt-out, the described update will not be available for your vehicle as an additional workshop measure. No action is necessary for Opting-In. Once the opt-out period has closed on February 4, 2024, this OTA will be automatically downloaded and installed. Thank you for allowing us to continue taking care of your vehicle.
NCU-2023120012
Service Bulletin/Repair Instructions
Mercedes-Benz AG (MBAG), the manufacturer of Mercedes-Benz vehicles, has released a software update for certain MY 2021 S-Class (223 platform) vehicles that allows for future remote software updates on additional control units. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the Communication Module software.
LI82.62-P-077311
Service Bulletin/Repair Instructions
No audio is output either in radio mode, or with media playback via app, Bluetooth or USB. In such cases, "Playback not active" is shown in the display. Mute line between communication module N112/2 and sound control unit N40/3. Check mute cable (violet) between control units for communication module N112/2 and sound N40/3, including plug contacts, and repair or replace as necessary. If the plug contact is deformed, it is imperative that its counterpart at the control unit is also checked.
OTA-Air Susp SW
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-23 S-Class, EQS (223, 297 platform) vehicles, the air suspension system software does not correspond with the latest series production configuration. The air suspension system will receive an OTA update to optimize the system and improve the ground clearance, especially during parking. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customerâÂÂs vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.
OTA-Comm Mod SW
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY19-23 A-Class, C-Class, CLA, CLS, E-Class, EQB, G-Class, GLA, GLB, GLC, GLE, GLS, AMG GT, S-Class (177, 205, 118, 257, 213, 238, 243, 463, 247, 253, 167, 290, 217, 222 platform) vehicles, the communication module system software does not correspond with the latest series production configuration. The communication module will receive an OTA update to improve the system stability and allow for better accessibility of Mercedes me services. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customerâÂÂs vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.
LI46.35-P-077076
Service Bulletin/Repair Instructions
Control unit N68 - electric power steering Fault P063544 - The electric power steering has a malfunction. There is a fault in the data memory. with fault freeze frame data "Mon_ID 320" in the "stored" status stored in the fault memory of control unit N68. No functional restrictions of the electric power steering or warning messages are visible. Faults occur in the event of a software update or when initializing the control unit for the electric power steering N68. The fault code can be ignored and the fault memory of the control unit for the electric power steering N68 can be deleted. It is not necessary to replace the electric power steering.
LI91.18-P-077075
Service Bulletin/Repair Instructions
Crease formation on genuine leather seat covers in vehicles with low mileage ⢠Objects left on the seats for extended periods of time (pressure marks). ⢠Objects wedged between the seat backrest and seat cushion (e.g. seat belt buckle). ⢠Light initial creases due to vehicle handling. ⢠Light creases in the outer covers originating from the production process (missing finish). Heat treatment of the seat covers using heat gun and plastic wedge. Be very careful to not overheat the seat material!
EW-EngineThermSW
Service Bulletin/Repair Instructions
In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC ("MBUSA") is extending the warranty coverage on the engine thermostat (including software update) installed in certain Model Year ("MY") vehicles (with engines M176, M177, M178) listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 15 years/150,000 miles (whichever occurs first), due to the following condition: In the affected vehicles, the sealing ring in the engine thermostat could detach, causing a delay in the heating of the engine coolant. This may also cause the check engine Malfunction Indicator Lamp ("MIL") to illuminate. Please follow the work instructions added to this NCU to remedy the issue. Please be advised that all repairs being claimed under this extended warranty must have a quick test uploaded with the following fault code information and may be audited. P012800 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) All repairs found to be functioning properly or without proper documentation will be returned and the claim debited in full. Only the following damage codes and parts may be claimed for the aforementioned repairs: Damage Code(s): 20102 - Insert, coolant thermostat o 52 - Does not operate correctly o 41 - Hard closing 20103 - Housing/cover, coolant thermostat o 73 - Electrical fault 2030T - Heating element, coolant thermostat o 53 - Insufficient effect/power o 73 - Electrical fault
OTA-InductNonMMC
Service Bulletin/Repair Instructions
Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-24 C-Class, EQE, EQS, S-Class (206, 294/295, 296/297 and 223 platform) vehicles, the inductive charging system software does not correspond with the latest series production configuration. The inductive charging system will receive an OTA update that includes improvements for the wireless charging of the Apple iPhone 14 and subsequent generations with MagSafe. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer's vehicle free of charge and do not require a dealer visit. All customers will be mailed a letter informing them of this OTA software update.
OTA-InductiveSW
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-24 C-Class, EQE, EQS, S-Class (206, 294/295, 296/297 and 223 platform) vehicles, the inductive charging system software does not correspond with the latest series production configuration. The inductive charging system will receive an OTA update that includes improvements for the wireless charging of the Apple iPhone 14 and subsequent generations with MagSafe. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customerâÂÂs vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.
LI82.95-P-076991
Service Bulletin/Repair Instructions
Mercedes me connect services inoperative (me-Call, Remote Status, etc.). Mercedes me services - activation not possible. Notes: - In the quick test, no fault code and no event code is stored in the RAMSES control unit (N112/2). The SIM card may be defective. A defective SIM card can be identified as follows: With XENTRY Diagnosis, open the "ACTUAL values" menu of the RAMSES control unit and read out the values for "EUICC, ICCID, IMEI, IMSI". ACTUAL values in the event of a defect: 1. EUICC:null 2. ICCID: null 3. IMEI: null 4. IMSI: null If all the values for "EUICC, ICCID, IMEI, IMSI" = null, then it is highly likely that the SIM card inside the RAMSES control unit is defective. Recommissioning the RAMSES control unit may rectify the problem. If the problem is still present after the recommissioning, then the RAMSES control unit must be replaced. In this case, please create a TIPS case and forward it to HQ. The part is required for analysis. Information on the return delivery of the module will be communicated via TIPS case.
NCU -MBUX SW OTA
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-23 C-Class, EQS, S-Class, SL, EQE, GLC (206, 296, 297, 223, 232, 294, 295, 254 platform) vehicles, the head unit software will be updated remotely to MBUX 2.4. With this update, customers will benefit from many new functions and features, such as video streaming (note that the Entertainment Package Plus is required for streaming and can be purchased from the Mercedes me Store by the end of 2023), Dolby Atmosî, MBUX Voice Assistant (NewsFlash & Tourguide), a personal decorative image on the front passenger display, and more. Please see NCU issued on September 5th, 2023 from Product Management and Digital House team âÂÂAdditional New Connected Features Coming SoonâÂÂ. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customerâÂÂs vehicle free of charge without an additional workshop visit via the data link of the communication module. No customer letter will be mailed for this software update.
LI82.85-P-076800
Service Bulletin/Repair Instructions
The "SOS nonfunctional" message appears sporadically in the instrument cluster of the vehicle. The fault code B129C00 is stored in the control unit log. The message occurs in particular after the vehicle has been non-operational for an extended period of time; the message then disappears of its own accord after a few minutes. No functional limitation to the emergency call system is to be expected. Software error in N112/9 control unit for telematics services (HERMES). Software update for control unit N112/9 - Control unit for telematics services (HERMES) to software release E522.8. If, against expectations, the erroneous display of the message in the instrument cluster continues to occur following the update, please create a TIPS case.
LI83.30-P-076965
Service Bulletin/Repair Instructions
Following a software update of the head unit to FUP3 variant 316.5 or higher, the "Residual heat" button is no longer displayed in the air conditioning system operating menu. A26/17 head unit MBUX software There is currently no remedy available. Replacing the hardware will not remedy the problem. A software update is intended with the FUP4 software E444.x (planned release for Q4/23)
Ll54.10-P-076896
Service Bulletin/Repair Instructions
12V message in IC when starting the vehicle. SW updates need to be performed. Follow the guided test for FC U116000 in N73/3*1 EIS CU. Perform the SW checks and updates. Fully charge both 12V and 48V batteries. After, perform a few drive/park cycles with at least 1 overnight park cycle. If the 12V message is no longer present, release the vehicle.
LI82.85-P-076866
Service Bulletin/Repair Instructions
Complaint On vehicles with a low mileage, it may be the case that the displays in the rear passenger compartment do not start up. The Samsung tablet also remains stuck on the disclaimer. The Rear Seat Entertainment Package is nonfunctional and cannot be started or operated. Transport mode was unable to be completely deactivated. The rear seat unit is still in transport mode. Perform activation and subsequently deactivate the transport mode. Update the A26/17 - MBUX multimedia system (Head unit) to current software release.
NCU-HU SW Update
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2018-2023 C-Class, EQE, EQE SUV, EQS, EQS SUV, GLC, GLE and S-Class (206, 295, 294, 297, 296, 254, 167 and 223 platform) vehicles, the communication module software does not correspond with the latest series production configuration. The update is free of charge and will be carried out in the background. The installation will eliminate software errors for a better entertainment experience. The update will show after the ignition has been cycled. MBUSA will conduct an OTA service campaign. A workshop visit for the customer is not required since remote software updates are automatically downloaded and installed in the customerâs vehicle. The OTA may be validated as successful on the customerâs Mercedes Me connect app under âOver-the-Air Vehicle Updatesâ as âUpdate for the communication moduleâ. If the OTA is successful it will show a green âinstalledâ and date of installation in the Over-the-Air update section.
LI82.70-P-076832
Service Bulletin/Repair Instructions
Phone call log is not shown in the MBUX display. If the telephone connects with the head unit again, the call log may not be sent. Current software release for the A26/17 - MBUX multimedia system (Head unit) Currently there is no remedy available. Replacing the hardware will not resolve the symptom. ⢠New software for the A26/17 - MBUX multimedia system (Head unit) will be made available with software version E444.x (scheduled for Q4/2023)
LI82.85-P-074541
Service Bulletin/Repair Instructions
With the adaptations from modification year 802 to modification year 803, the illumination of the multimedia connection units has also been converted from white to blue. The conversion in the production process could result in a different assignment (sometimes white instead of blue or vice versa). Conversion in the production process If a customer reports the different assignment (sometimes white instead of blue or vice versa). please open a TIPS case
LI72.10-P-076701
Service Bulletin/Repair Instructions
Flush door handle needs to be pulled on with increased force in order to open the door manually. Turning angle sensor lever is broken. Replace the bearing bracket of the flush door handle.
NCU - HU Update
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2021-2024 C-Class, EQE, EQE SUV, EQS, EQS SUV, GLC, GLE and S-Class (206, 295, 294, 297, 296, 254, 167 and 223 platform) vehicles, the head unit software does not correspond with the latest series production configuration. The update is free of charge and will be carried out in the background. The installation will eliminate software errors for a better entertainment experience. MBUSA will conduct an OTA service campaign. A workshop visit for the customer is not required since remote software updates are automatically downloaded and installed in the customerâs vehicle. The OTA may be validated as successful on the customerâs Mercedes Me connect app under âOver-the-Air Vehicle Updatesâ as either âSoftware Update MBUX 2.4â or âSoftware Update Hermes 1.5 E522.8â. If the OTA is successful it will show a green âinstalledâ and date of installation in the Over-the-Air update section.
LI00.20-P-075495
Service Bulletin/Repair Instructions
Complaint 1. "Perform vehicle handover" in the workshop menu to start the maintenance computer for service A/B cannot be carried out. 2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. Cause Routine change in software in instrument cluster N133/1. Vehicle handover has not taken place. Remedy Manually commission already-installed instrument cluster control unit N133/1 and then perform special procedure to re-initialize ASSYST data in powertrain control unit N127.
LI72.12-P-076545
Service Bulletin/Repair Instructions
The comfort doors function is shown as "unavailable" in the MBUX display (see picture) This means that the rear doors can only be activated via the switch in the headliner in the rear passenger compartment and not activated from the front via the MBUX display. Head unit software There is currently no remedy available. FUP4 head unit software will have the solution implemented. The software is planned for (Q4/23).
NCU-2023040017
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2022-2023 C-Class, EQS and S-Class (206, 297 and 223 platform) vehicles, the driving assistance system control unit software does not meet current specifications. In the presence of uniquely shaped civil superstructures that parallel the roadway at a height of~26-33 feet (e.g. large overhanging bridge abutments, etc.), the vehicle may initiate brake applications during operation. In such cases, the driver remains in control of the vehicle and can override the system at any time. What Weâre Doing An authorized Mercedes-Benz dealer will update the driving assistance system control unit software.
NCU-OTA051923
Service Bulletin/Repair Instructions
Mercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz, has determined that on certain MY 2021-2023 EQE, EQS, EQS SUV, and S-Class (223, 295, 296, and 297 platform) vehicles, the software of the sound system does not correspond with the latest series production configuration. The software update serves as the necessary preparation for additional functionalities that will be included in the future to improve and expand the sound system of the vehicles. The update is free of charge and will be carried out in the background. The installation will take approximately 3 minutes, the system can be used without restrictions during this period. The new software will be active during the next driving cycle. What Weâre Doing MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customerâs vehicle free of charge without an additional workshop visit via the data link of the communication module. All customers will be mailed a letter informing them of this software update.
LI91.60-P-076303
Service Bulletin/Repair Instructions
Complaint Electrical fault on rear airbag/window airbag. SRS indicator light on in instrument cluster. Cause Contact problems that may create a short circuit between the pins or to the vehicle ground Remedy Connect and disconnect the affected airbag five times Then the squib must be carefully blown out with dry compressed air.
LI82.62-P-076176
Service Bulletin/Repair Instructions
Complaint Static noises from speakers while driving (see video labeled example of noise). Static noise is no longer present after opening a window (slightly) or when sliding sunroof is in tilt position. Cause A total of 4 sensors are installed at the axle housings for the "Active driving noise compensation" function. These record driving noise and transfer them to control unit N156/1 - Active driving sound compensation (ASX7) as electrical pulses. The angle bracket of the sensor may come into contact with the longitudinal member of the body. As a result, unintended vibration may be transferred via the bracket to the sensor. The control unit interprets this as driving noise and tries to compensate, causing noise in the speakers. Remedy Check assembly of sensors particularly, the brackets, and ensure that they do not come into contact with the body. If this does not remedy the problem, please create a TIPS case. NOTE: There may be no mechanical forces on the sensor as there may be a danger of damage.
LI82.85-P-076157
Service Bulletin/Repair Instructions
Complaint Brief connectivity interruptions when using Apple CarPlay over Wi-Fi, for example when driving underneath toll bridges. Cause There may be interruptions to WiFi as a result of external interference. This is particularly observed around toll bridges. Remedy There is currently no remedy and replacing hardware does not resolve the problem. An alternative option would be to use Apple CarPlay wired. In the FUP4 variant of the head unit software (Q1/2024), stability improvements have been made to the Wi-Fi connection.
LI91.16-P-076098
Service Bulletin/Repair Instructions
Complaint When driving on a rough road, there may be noises from the foldable head restraints of the front seats. The noise is not present at the limit stops (head restraint entirely retracted or entirely extended) Cause The head restraint has increased play between the worm and the gearwheel in the head restraint mechanics. Remedy Check play/noise (see video attachment, headrest OK/headrest not OK). Please exchange the head restraint in the event of a not OK result. Cause The head restraint has increased play between the worm and the gearwheel in the head restraint mechanics. Remedy Check play/noise (see video attachment, headrest OK/headrest not OK). Please exchange the head restraint in the event of a not OK result.
SC-2023030009
Service Bulletin/Repair Instructions
Update Digital Operator's Manual and enclose printed Operator's Manual, replace if necessary Model 223
LI82.85-P-075094
Service Bulletin/Repair Instructions
Complaint Traffic Light View is intermittently inoperable after updating the MBUX Multimedia System (A26/17) to E316.5. Cause Previously available MBUX software release. Remedy A new software remedy is currently available. Please update the head unit software to version E329.5 or newer.
LI82.20-P-075747
Service Bulletin/Repair Instructions
Complaint The "Ambient Light Warning Assistance Inoperative" warning message is displayed in the instrument cluster and the light-emitting diode strips are not working. This message is set by the active ambient lighting control unit (N162/1), when a light-emitting diode strip is missing or where a fault is detected in the light-emitting diode strip. Cause The following causes are possible: 1. Rework in active ambient lighting area. The ambient lighting is switched on and the connectors are disconnected from the wiring harness.NO fault code is stored. 2. Fault code 123X87 (communication error) is stored in the active ambient lighting control unit (N162/1) and an lightemitting diode strip (E34/1-6) is displayed in the quick test with ! (exclamation mark).. 3. Fault code 186X00 (malfunction) stored in the light-emitting diode strips (E34/1-6). 4. Fault code 186x98 (overtemperature) stored in light-emitting diode strips (E34/1-6). 5. There are no fault codes stored in the active ambient lighting control unit (N162/1) and in the light-emitting diode strips (E34/1-6). Remedy 1. Lock and unlock vehicle to reset the active ambient lighting control unit (N162/1). IMPORTANT: When locking, the visual locking verification signal must be visible. Make sure that all the doors are shut. After locking, wait until the instrument cluster switches to OFF, then press unlock. 2. Run guided test as per XENTRY Diagnosis (check electric lines and connectors).
LI54.71-P-075704
Service Bulletin/Repair Instructions
Complaint Message in IC: "Active Brake Assist function restricted". "Active Emergency Stop Assist inoperative" "Active Lane Keeping Assist inoperative" "Active Blind Spot Assist inoperative" Note: The problem can occur after a software update of control unit N62/4 - Driver assistance system A quick test may not show any relevant fault codes related to the IC messages. Cause In rare cases, it may be that no automatic SCN coding was performed after control unit N62/4- driver assistance system was programmed. Remedy Perform SCN coding of N62/4 Driver assistance system
LI54.30-P-075652
Service Bulletin/Repair Instructions
Complaint The last settings for the Augmented Reality Head-up Display (AR HUD) may not always be saved and the settings are reset to the default state. Cause Instrument Cluster control unit (N133/1) software Remedy Updated Instrument Cluster control unit (N133/1) software will be available in Q1 2023
LI46.15-P-063353
Service Bulletin/Repair Instructions
Complaint Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position (e.g. with Easy Entry function). Cause Height adjustment moves to the top/bottom limit stop and jams.
SC-2022060010
Service Bulletin/Repair Instructions
Check ashtray inserts and enclose as aftermarket measure if necessary
LI54.10-P-075043
Service Bulletin/Repair Instructions
Complaint On affected hybrid vehicles of model series 223, a sporadic or continuously displayed red 12V warning message is shown in the instrument cluster. Cause Based on the current status of the analyses, 2 different causes may be considered probable: ·Failure of the current limiter module: The fault does not necessarily trigger a fault code. This fault profile is likely in the event of continuous 12V red messages. ·A second cause of the fault is indicated by the saved fault codes P0E32FA in the HV DC/DC converter (N82/2; see XENTRY Diagnosis for fault code) and, in some cases, B161609 in the electronic ignition switch (N73). This fault profile is likely in the event of sporadic 12V red messages. Remedy For cause analysis, the quick test for the vehicle should be examined for the presence of either of the two fault codes specified above. If no DTCs are saved and a continuous 12V red message is shown in the instrument cluster, the current limiter module is likely faulty and the component part must be replaced. In the event that the fault codes are saved in the DC/DC converter, the guided check must be followed. Depending on the result of the diagnosis, the work must be invoiced to the SSL of the corresponding component part.
LI80.20-P-075086
Service Bulletin/Repair Instructions
Complaint The vehicle sporadically may not unlock via the radio remote control or Keyless Go. The vehicle may require multiple start attempts before starting. The faults B1A7611 and U113E87 are stored in the electronic ignition lock N73 (both faults must be present). After bus idle, the problem is no longer present. Cause Software fault in electronic ignition lock N73. Remedy Update electronic ignition lock N73 to software A2069025508.
LI32.35-P-075054
Service Bulletin/Repair Instructions
Complaint Knocking noises from the front axle when redirecting (right/left) and driving slowly. Cause Front axle sway bar end links have too much play in the ball joint, hence the noises. Remedy Carry out a test drive following a slow slalom course. If knocking noises occur when doing so, the sway bar end link must first be disconnected at the respective side. Check for play and replace sway bar end link if necessary.
LI32.50-P-075055
Service Bulletin/Repair Instructions
Complaint Malfunction due to the ingress of dirt during the repair of the hydraulic system. Cause Cleaning instructions in WIS are not being sufficiently observed. This can result in dirt entering the hydraulic system of the vehicle or the filling unit. In subsequent filling/emptying procedures, the dirt is then transferred to another vehicle. Remedy Before removing/replacing an electrohydraulic pump unit or the associated hydraulic lines, as well as when removing the electrohydraulic suspension struts, it is essential to thoroughly wash the underbody. If the dust cap is missing/defective and if the filling valve in the interior is contaminated, the surrounding area must be cleaned thoroughly.
LI82.20-P-074058
Service Bulletin/Repair Instructions
Complaint In the "single color" setting, it is not possible to select the color for the ambient lighting. If the setting is changed to "multicolored", the color can be changed. Cause Incorrect personalization in driver's side SAM control unit N10/6. Remedy Carry out personalization for driver's side SAM control unit N10/6.
LI82.85-P-074800
Service Bulletin/Repair Instructions
Complaint Customer may state that the wrong curve direction arrow is shown in the instrument cluster (driver) display. Cause In navigation map data V10.0 released Q4 2021, some curve sections are partially turned. Therefore, in a right-hand curve, a left-hand direction arrow is sometimes shown or vice versa. Remedy In the event of a customer complaint, V9.1 of NTG7 map data can be installed. This map data version is available via Download Manager
LI32.50-P-074719
Service Bulletin/Repair Instructions
Complaint Fault message, suspension, max. 50 mph in instrument cluster. "i" - Fault code "ERR_INF2_CORE2CORE_COMM_FAILURE" = true is stored in the quick test and/or current. Cause Communication fault between electrohydraulic suspension component parts through out-of-date software (application software and bootloader software). Remedy With the latest hardware item number for the electrohydraulic pump units A167 901 62 03, the new application software A167 902 31 12 and the new bootloader software A167 904 18 01 have to be flashed.
P-SC-2022050001
Service Bulletin/Repair Instructions
Replace remote trunk closing control unit Model 223
LI40.15-P-074659
Service Bulletin/Repair Instructions
Complaint Fault message (yellow) in instrument cluster and TPM warning lamp. Individual or all tire pressure sensors are not recognized. Tire pressure monitoring system nonfunctional / temporarily unavailable. Cause Tires with excessively-large radio signal attenuation interfere with transmission of the tire pressure sensors. Remedy Check if one of the following tires is installed: If one of the tires listed above is installed with the corresponding DOT number, replace this tire. In accordance with the Warranty Manual, the costs for the tire shall be settled directly with the tire manufacturer.
LI54.30-P-074584
Service Bulletin/Repair Instructions
Complaint Customer states that the Radio and/or Media menus are not available in the driver display Note: Both menus are still present in the MBUX Display as it is not affected by the complaint Cause MBUX multimedia system (A26/17) software Remedy Perform the following steps to remedy the complaint: 1. Perform a software update of the MBUX multimedia system (A26/17) 2. Perform SCN coding of the Instrument Cluster control unit (N133/1)
LI82.20-P-074625
Service Bulletin/Repair Instructions
Complaint When entering and exiting the vehicle, the right rear footwell lighting does not change to white. The color configured for ambient lighting still lights up. Cause Faulty coding in front signal acquisition and actuation module control unit N10/6. Remedy Perform SCN coding in front signal acquisition and actuation module control unit N10/6
LI80.61-P-073356
Service Bulletin/Repair Instructions
Door handles selectively do not extend due to engagement of "anti-play" mode. Reset anti-play counter as necessary.