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.
LI28_00-N-079097_1_en
Service Bulletin/Repair Instructions
Complaint While driving through muddy / sandy/ off road terrain "4Matic Currently Unavailable" message on the dash Cause This vehicle is not equipped with a fixed force distribution AWD, rather force is only applied to the front axle according to ESP calculations. As per GF28.00‑D‑ 9900A: "vehicles with 4MATIC all‑wheel system and variable force distribution, an electronically regulated multiplate clutch integrated into the transfer case provides for the torque distribution. If the multiplate clutch is open during normal driving operation, only the rear axle drives the vehicle. If the clutch is closed, the front axle comes into play." The message "All‑wheel drive temporarily unavailable" is not indicative of a malfunction but rather informs the driver that all‑wheel drive is currently not available due to the transfer case clutch overheating. This occurs when the vehicle is driven in such a way that maximum front axle torque is needed for an extended period, causing the clutch to get excessively hot. If the vehicle is being driven under heavy load conditions, like in deep sand or snow, the rear axle may slip while the front axle does not deliver power. The transfer case then attempts to distribute torque to correct the slip, but it is limited to a maximum of 1150 Nm to protect the front axle transmission. In extended heavy‑load scenarios, the multidisk clutch in the transfer case slips, increasing the temperature. If the temperature model detects a critical temperature of 240°C, the system protects itself by disconnecting until it cools down to around 160°C, after which the all‑wheel drive becomes available again and the warning message disappears.Vehicles can handle flat terrain easily, but steep slopes or situations where wheels slip might cause additional resistance, leading to the described protection events and message in the dash. Remedy Recommendation is to release the vehicle back to the client with an explanation that the vehicle is operating as designed. Please advise the client to limit vehicle acceleration in limited traction situations to avoid disabling of the 4Matic system ‑ please see "Notes on all‑wheel drive" provided in the operators manual.
LI33_30-N-080795
Service Bulletin/Repair Instructions
Model 907 with all-wheel drive (A4M) – All-wheel drive inoperative Complaint The customer may report one or more of the following: • All-wheel drive is unavailable or inoperative. • Rear wheel slip during acceleration on low-traction surfaces. • Noise from the front axle area while driving. • Message in the instrument cluster indicating all-wheel drive is unavailable due to overheating. • Fault code P27874B - The temperature of the clutch is too high. There is a fault due to overtemperature may be stored in control unit N15 (Transfer Case). Cause An internal failure of the front axle differential may result in loss of torque transfer to the front wheels. In some cases, a fracture of the weld between the crown gear and differential housing may be present. Remedy Replace the front axle differential in accordance with: AR33.30-D-0525TSY – Replace Front Axle Differential.
LI54_30-N-080701
Service Bulletin/Repair Instructions
ASSYST PLUS service reminder appears earlier than expected due to vehicle operating conditions Complaint The ASSYST PLUS service reminder appears earlier than expected. The customer or dealer may report that the vehicle did not reach the starting maintenance interval shown in vehicle documentation, option coding, sales literature, or the Owner's Manual. The service reminder may appear significantly earlier than anticipated even though no faults are stored and no malfunction is present in the vehicle. The remaining distance and remaining time continue to decrease normally until the service reminder is displayed. Cause This condition is not caused by a malfunction of ASSYST PLUS. ASSYST PLUS is a dynamic maintenance management system that continuously evaluates vehicle usage and opera-ting conditions to determine maintenance requirements. The starting maintenance interval specified by variant coding represents a maximum interval that may only be achieved under favorable operating conditions. Actual maintenance intervals may be significantly shorter depending on vehicle use. Vehicle operating conditions such as driving conditions, engine load, engine operating conditions, idling, short-trip operation, environmental influences, oil aging, and Diesel Particulate Filter (DPF) regeneration activity may reduce the maintenance interval from its starting value. These conditions may accelerate engine oil aging through increased soot loading, fuel dilution, moisture accumulation, and additional engine operating stress. As a result, the remaining distance and remaining time until the next service may be reduced from the starting maintenance interval. Remedy Do not replace any parts. A due service must be assumed if the maintenance data calculated by ASSYST PLUS indicates that service is required.
LI47_00-N-069565
Service Bulletin/Repair Instructions
Fuel Level Unchanged After Refueling Complaint The customer reports that the fuel gauge shows inaccurate readings or remains unchanged after refueling. Cause A. The Fuel Supply Control Unit (FSCU) fails to detect a refueling event B. The Fuel Level Sensor provides incorrect readings due to mechanical interference or installation issues
LI14.20-N-073867
Service Bulletin/Repair Instructions
Complaint Complaint A: The engine is jolting/bucking between 1700 and 1900 rpm. Complaint B: One or more mechanical related fault codes for EGR Valve stored in CDI control unit, with possible Check Engine Light. Review list of mechanical fault codes in table below. NOTE: If one or more electrical related fault codes for EGR Valve are also present in CDI, utilize Complaint C. Review list of electrical fault codes PDF document in attachments. Complaint C: One or more electrical related fault codes for EGR Valve stored in CDI control unit, with possible Check Engine Light. Review list of electrical fault codes PDF document attached. NOTE: This LI supersedes LI14.20-N-073813, which is no longer valid. Cause Cause of Complaint A: Increased friction between the EGR Valve blade and seat due to soot deposits causing a delay of the EGR Valve being able to reach the target value of the EGR Valve position controller. NOTE: This causes the EGR Valve blade and potentially the boost pressure controller to oscillate. Cause of Complaint B: Soot deposits between the EGR Valve blade and seat leading to the EGR Valve no longer being able to meet the de-sired target of the EGR Valve position controller. Cause of Complaint C: Internal EGR Valve or other electrical faults related to the EGR Valve function. Remedy Remedy for Complaint A: Perform the following steps: 1. Disable the EGR Valve (Y27/17) by disconnecting the electrical connector. 2. Perform a test drive to check if the jolting/bucking issue resolves. 3. If the jolting/bucking is resolved, proceed to Remedy for Complaint B. 4. If jolting/bucking is still present, proceed with diagnosis to determine the root cause. Consider checking the follo-wing, but not limited to: •EGR system including the EGR Cooler, EGR Bypass Flap, EGR Temperature Sensor, and pipes for proper operati-on, excessive sooting and/or clogging, as well as EGR Bypass Flap vacuum element, switchover valve, and vacuum system. •Visually check the leak oil line or T-piece; reference LI07.00-N-059118.
LI80.20-N-079697
Service Bulletin/Repair Instructions
Acoustic Warning or message occurring when a closed sliding door is not recognized Complaint Customer may state the warning message or indicator accompanied by acoustic tone alerting the sliding door is ajar when the door is completely closed Cause There are several reasons that lead to the failure occurring: - Mechanical damage through bending when loading and unloading - Worn contact plates --> After detachment of silver plating, the coper plate is corroded - Movement of sliding door/body when driving --> Contact pins do not always make contact with contact plate --> Central locking system fault message in instrument cluster Remedy In a problem case, replace contact switch for vehicles with +T50/+T55/+EL9 or contact plate with A4478201903. Remember to check the fit of the sliding doors and make any necessary adjustments as per AR72.16-S-1023E (447/448) and AR72.16-D-1023TS (907/910). Further valid damage codes: 82326 Contact switch for central locking system on sliding door 82347 Contact plate for central locking system on sliding door 53196 K/Z contact plate for central locking system on sliding door 82645 Contact switch for sliding door
LI00.20-N-080626
Service Bulletin/Repair Instructions
Complaint ASSYST values in XENTRY actual values and workshop menu of instrument cluster are implausibly excessive. Infor-mation: According to ASSYST values in XENTRY Diagnosis and the instrument cluster workshop menu, a larger jump (for example 20,000 km or 12,500 miles) has been detected within one ignition cycle that does not match the usual customer usage pattern/maintenance history. Cause Differences between the ASSYST memory in the control units for the drivetrain (N127) (CPC) and the instrument clus-ter (A1) (IC) Remedy 1. Connect 12 V charger (see AR54.10-D-1127TS for models 907). Note: An adequate voltage from the on-board electrical system battery must be guaranteed for the entire duration of the work procedure. Otherwise the control units could be damaged if an undervoltage occurs. Information: Observe the operating instructions of the 12 V charger. Information: Use the 12 V charger to ensure a sufficient voltage (minimum 12.5 V) from the on-board electrical system battery.
LI35.00-N-080267_1
Service Bulletin/Repair Instructions
Sprinter 907 - Rear Axle Noise Diagnosis Best Practices Complaint Various noises from area of rear axle while driving Cause A: Howling Noises The high‑frequency howling noise is caused by the normal meshing behavior of the rear axle gear set, consisting of the pinion and crown gear. Two example noise recordings are provided in the attachment for reference. The volume and perception of this noise can vary depending on vehicle weight and load condition. Due to the current design of the Sprinter rear axle, it is not possible to completely isolate or decouple the the vibration generated by the normal meshing of the rear axle gears from the vehicle body. As a result, this noise may be transmitted into the vehicle interior. This noise is considered a normal characteristic of the rear axle design and vehicle operation. As it is not the result of a technical failure, component repairs or replacements will not lead to an improvement. There is no negative impact on the function, durability, service life, or operational safety of the rear axle. B: Other Noises: Noises that differ from the described howling characteristic (for example grinding, droning, or chattering noises) are not considered normal and may indicate a technical concern. Possible causes may include, but are not limited to: • Damaged bearings • Increased or abnormal gear wear • Excessive play within the differential Remedy Remedy for Cause A: Do not replace any components. This noise is considered a normal characteristic of the rear axle design and vehicle operation. Remedy for Cause B: If the noise does not match the described howling characteristic, the concern must be diagnosed and documented using the guidance below, with the results included in the warranty claim as applicable. Documentation of Concern: In many cases, the concern can be remedied using available replacement parts, and a complete rear axle assembly replacement is not necessary. However, due to parts availability, tool availability and workshop constraints, a complete assembly replacement may be performed in select cases to mitigate vehicle downtime. IMPORTANT: This is not intended to be the default repair approach. Component replacement must not be performed without diagnostic findings that clearly support a technical defect. Replacing rear axle components without confirmed abnormal findings may result in a debit of the warranty claim. This document does not guarantee warranty coverage and is designed to aid in diagnosis and subsequent resolution of the complaint. Create a file with all of your documents, findings, photos and sound files. 1. To ensure there is a clear understanding of the customer complaint, collect and document the following information: - When did the noise start? - Verify whether any previous repairs or work were performed prior to the onset of the noise. - Did the noise occur suddenly, or did it develop progressively over time? - Is the vehicle upfitted, modified, or retrofitted? (List all modifications) - Attach photos of any modifications or added equipment. - Under which conditions does the noise occur? (Provide all that apply) • Vehicle speed • Selected gear • Load condition • Outside ambient temperature and/or weather conditions • Engine and drivetrain temperature Diagnosis and Inspection: 2. Collect a video or sound file of the noise concern, ensure the video is available if requested. 3. Perform an NVH recording and store the .pp data file. The file must be available if requested during warranty review or parts inspection.
LI49.20-N-078466_4
Service Bulletin/Repair Instructions
Check engine light with fault code P3005CA in MRD1 (CDI) Complaint The check engine light is on, with a possiblility in a reduction of power and the presence of soot in the exhaust system. Fault code P3005CA: The diesel particulate filter efficiency is insufficient. Additional information: Additional fault codes may be present, related to the Diesel Particulate Filter (DPF) system or the Exhaust Gas Recirculation (EGR) system. Cause This fault code sets due to the following factors: 1. Damage to the Diesel Particulate Filter (DPF) unit. 2. The N74 (Soot Particulate Sensor Control Unit) identifies soot or debris located downstream of the SCR Catalyst (underbody). Remedy Note: The guided tests for fault code P3005CA have been revised in the XENTRY unit. It is important to complete these guided tests thoroughly. TIPS cases are NO longer required unless there is an absence of soot at the outlet of the Diesel Particulate Filter (DPF) unit. If there are any other fault codes present for component 'N74 (Soot Particulate Sensor Control Unit)', process these first. 1. Damage to the Diesel Particulate Filter (DPF) unit. • Complete the XENTRY guided tests: • Check the Exhaust system for leaks - Perform a visual inspection of the exhaust system from the Combustion Engine to Diesel Particulate Filter (DPF). Verify that there are no external damages and that all clamps and sensors are installed and leak-free. • Check component 'Exhaust pipe and Filter screen of Exhaust Gas Recirculation (low pressure)' for carbon fouling. If no soot is present at the Tailpipe outlet, recommended to separate the exhaust pipe downstream of the Diesel Particulate Filter (DPF) at the outlet to inspect.
LI49-20-N-075995
Service Bulletin/Repair Instructions
Vehicles with SCR Generation 4: SCR/AdBlue® warning message cannot be reset with fault code P13DF00 or P300685 Complaint SCR or AdBlue warning message cannot be reset. All fault codes in the AdBlue (SCR) control unit have been processed and corrected, however fault codes P13DF00 or P300685 remain active and stored. Cause The procedure for resetting the SCR or AdBlue warning message with XENTRY Diagnosis has not been carried out. Note: If AdBlue quality or concentration related fault codes are present, such as P300494, P203B31, or P206B31, complete the applicable diagnostic procedure first. This includes the thaw, mixing drive, and retest requirements in LI49.20-N-080376 and the detailed diagnosis and re-pair steps in LI49.20-N-078838 as applicable. Do not attempt to reset the SCR or AdBlue warning message until the underlying fault condition has been corrected. Remedy Note: Do not replace any parts for an incorrectly executed reset procedure. 1. Connect the battery charger •Maintain adequate voltage throughout the procedure per applicable guidance. 2. Connect the diagnostic device •Use the latest version of XENTRY Diagnosis and Add-Ons. 3. Reset the SCR or AdBlue warning message using XENTRY Diagnosis •Quick test view → N118/5 – Selective Catalytic Reduction (SCR GEN4) → Special processes → Reset SCR/AdBlue® warning message. Note: Ensure all 5 listed processes are completed successfully, indicated by Actual value: "successfully completed". 4. Complete the disconnect and sleep mode initiation procedure •Disconnect XENTRY. •Refer to manual AD00.00-D-2000-06TS for the correct procedure to disconnect the diagnostic device from Model 907. •Disconnect the Battery Charger •Refer to manual AR54.10-D-1127TS for instructions on safely disconnecting the battery charger from Model 907. •Turn off the ignition. •Remove the key. •Lock the vehicle and wait approximately 15 minutes to allow the CAN bus system to enter sleep mode. 5. Post sleep mode vehicle start •After the 15-minute waiting period, start the vehicle. Note: The "starts remaining" message will remain on the Instrument Cluster (IC), but the vehicle will not be in the 5mph de-rate mode. 6. Drive for system self-test •Drive the vehicle for 5 to 10 miles to enable the SCR system to perform a self-test. Note: During the warning reset process, ensure the outside temperature sensor is reading above 10 degrees Fahrenheit. If not, keep the vehicle inside and repeat the reset. The vehicle may need to be driven to allow NOx sensors and the SCR system to complete their self-test before fault codes can be stored and then cleared. 7. Confirm and erase fault codes •Verify warning messages. •Ensure relevant fault codes are stored. •Erase fault memory if necessary. 8. Disconnect the Diagnostic Device •Refer to manual AD00.00-D-2000-06TS for the correct procedure to disconnect the diagnostic device from Model 907. 9. Disconnect the Battery Charger •Refer to manual AR54.10-D-1127TS for instructions on safely disconnecting the battery charger from Model 907.
LI49-20-N-078838
Service Bulletin/Repair Instructions
Check engine light or Adblue warning with fault codes P206B31, P203B31, or P300494 present in AdBlue (SCR) control unit (N118/5) Complaint The check engine light or AdBlue warning is activated, accompanied by one or more of the following fault codes related to the AdBlue tank: P206B31 Malfunction of the concentration sensor for AdBlue; the signal is absent. P203B31 Malfunction of the AdBlue fill level sensor; the signal is absent. P300494 The quality of the AdBlue is insufficient. Cause A. The software for the AdBlue (SCR) control unit (N118/5) is outdated. B. The AdBlue concentration is outside ISO 22241 limits (below 31.8 percent or above 33.2 percent). C. Frozen or partially frozen AdBlue can cause the AdBlue level and concentration functions to report inaccurate values. D. The AdBlue level and concentration sensing functions in the tank are damaged. E. Cold soak and freeze thaw exposure can temporarily create concentration gradients in the tank and lead to sampling dependent readings until fully thawed and mixed. Important Before evaluating any AdBlue concentration result, follow LI49.20-N-080376 to confirm full thaw, perform a mixing drive, and retest. Do not use a single urea percent reading taken from frozen, partially frozen, or not fully mixed AdBlue for a repair or responsibility decision. Remedy A. Software 1. Verify no newer software is available for the AdBlue (SCR) control unit (N118/5). 2. If a software update is available, program the control unit per XENTRY guidance. 3. Only after the system is in proper working condition, complete LI49.20-N-075995 for AdBlue warning reset. Note: If there is no updated software available, print the XENTRY screen indicating this and proceed to section B. B. AdBlue concentration 1. Confirm full thaw and mixing per LI49.20-N-080376, then verify AdBlue concentration. a. Check concentration using the MB refractometer per the MB tool instructions and applicable WIS guidance. b. Use freeze frame data when applicable. 2. If AdBlue concentration remains below 31.8 percent or above 33.2 percent after full thaw, mixing drive, and retest, AdBlue replacement is required. Warranty and responsibility decisions must follow LI49.20-N-080376 warranty handling guidance and standard war-ranty policy. 3. If AdBlue concentration is within specification, proceed to section C. C. Frozen AdBlue or SCR actual values indicate frozen AdBlue 1. Check if AdBlue is frozen. If frozen, allow the vehicle to sit in a warm environment overnight and recheck. 2. With the vehicle running and XENTRY connected, display the actual AdBlue level values. 3. Drain the AdBlue tank and verify the displayed fill level reflects the change. 4. Fill the AdBlue tank slowly. Do not overfill. Verify the fill level reflects the change. Note: For model years 23 to 25, Fill Level Sensor 1 functions as the empty sensor and accurately measures only the bottom portion of the tank. Once the level is above the measurement range, the displayed value may fluctuate. This is nor-mal. 5. Reset the AdBlue tank fill level via XENTRY. Print the XENTRY pages showing that the fill up completed success-fully. 6. Only after the system is in proper working condition, complete LI49.20-N-075995 for AdBlue warning reset and print the XENTRY pages confirming the reset completed successfully. Note: If XENTRY still indicates frozen AdBlue or the concentration remains inaccurate after drain and refill and the thaw, mix, retest requirements were completed, proceed to section D. D. Damaged AdBlue level and concentration sensing functions 1. Replace the AdBlue tank as required by applicable MB guidance. 2. With the vehicle running and XENTRY connected, display the actual AdBlue level values. 3. Fill the AdBlue tank slowly. Do not overfill. Verify the fill level reflects the change. 4. Reset the AdBlue tank fill level via XENTRY. 5. Only after the system is in proper working condition, complete LI49.20-N-075995 for AdBlue warning reset.
LI49-20-N-080376
Service Bulletin/Repair Instructions
The check engine light is illuminated, or the AdBlue warning is active, with recorded faults related to AdBlue quality or concentration. Complaint Customer reports an illuminated check engine light and or an AdBlue system warning indicating AdBlue quality out of specification. The vehicle may enter reduced performance mode. One or more of the following fault codes related to the AdBlue tank may be stored: P206B31: Malfunction of the concentration sensor for AdBlue; the signal is absent. P203B31: Malfunction of the AdBlue fill level sensor; the signal is absent. P300494: The quality of the AdBlue is insufficient. Background AdBlue must meet ISO 22241 quality requirements. ISO 22241 urea content limits for AdBlue are 31.8 percent to 33.2 percent by mass. AdBlue begins to crystallize and freeze at approximately 12 degrees F. Freeze-thaw does not degrade the product when uncontaminated, and the bulk concentration returns to normal after complete thaw and mixing. Cause In cold soak conditions and during freeze thaw exposure, the tank contents may not be uniform at the time of sampling or system checks. During freezing and partial thaw, ice formation can temporarily create concentration gradients in the tank. As a result, urea percent readings can vary based on sample location and the state of thaw and mixing, which can produce apparent out of range readings even though the bulk fluid returns to normal after mixing. Remedy Testing Do not use a single urea percent reading taken from frozen, partially frozen, or not fully mixed AdBlue to make a repair or responsibility decision. Confirm full thaw and ensure tank contents are mixed before sampling. 1. Confirm full thaw - Confirm the AdBlue tank and associated components are fully thawed before sampling. - Do not sample slushy or partially frozen fluid. 2. Mix tank contents - Perform a road drive intended to mix the tank contents before sampling. - Idle time alone is not a reliable substitute for mixing. 3. Sample and measure - Take the sample and measure with the MB refractometer per the MB tool instructions. - Record the urea percent value. 4. Interpret the result against ISO 22241 limits - Within specification is 31.8 percent to 33.2 percent urea by mass. 5. Repeat if out of specification - If out of specification, repeat after an additional mixing drive to reduce sampling variation. - If still out of specification after full thaw, mixing, and repeat measurement, treat as a true out of specification result and proceed with further diagnosis per applicable MB guidance. Acceptance criteria AdBlue is within the ISO 22241 specification when the urea percent is between 31.8 percent and 33.2 percent by mass. Values outside this range are out of specification and require further diagnosis after completing the full thaw and mi-xing procedure above. Cross reference For vehicles with fault codes P206B31, P203B31, or P300494, refer to LI49.20-N-078838 for the detailed diagnostic and repair procedure. If a SCR or AdBlue warning reset is required after correction, refer to LI49.20-N-075995. Complete the diagnostic and corrective steps first. Perform the warning reset only after the underlying fault condition has been corrected. Warranty information and claim handling
LI4920N075995
Service Bulletin/Repair Instructions
Vehicles with SCR Generation 4: SCR/AdBlue® warning message cannot be reset with fault code P13DF00 or P300685 Complaint Vehicles with SCR Generation 4: SCR/AdBlue® warning message cannot be reset. Information: All fault codes in the AdBlue® (SCR) control unit have been processed and corrected; however, fault codes P13DF00 and P300685 remain active and stored in the AdBlue® (SCR) control unit. Cause The procedure for resetting the SCR/AdBlue® warning message with XENTRY Diagnosis has not been carried out. Information: Before resetting the SCR/AdBlue® warning message for SCR Generation 4, the AdBlue® system must be in proper working condition and tested.
LI4920N078838
Service Bulletin/Repair Instructions
Check engine light or Adblue warning with fault codes P206B31, P203B31, or P300494 present in AdBlue (SCR) control unit (N118/5) Complaint The check engine light or AdBlue warning is activated, accompanied by one or more of the following fault codes related to the AdBlue tank: P206B31: Malfunction of the concentration sensor for AdBlue; the signal is absent. P203B31: Malfunction of the AdBlue fill level sensor; the signal is absent. P300494: The quality of the AdBlue is insufficient. Cause A. The software for the AdBlue (SCR) control unit (N118/5) is outdated. B. The concentration of AdBlue is either above or below the Mercedes-Benz specifications, which can lead to premature freezing. C. Frozen or partially frozen AdBlue can cause the AdBlue level sensor to misread levels. D. The AdBlue level sensor is damaged.
LI5410N080207
Service Bulletin/Repair Instructions
Xentry Battery Tester results do not match with workshop 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.
LI49.20-N-075995
Service Bulletin/Repair Instructions
Complaint Vehicles with SCR Generation 4: SCR/AdBlue® warning message cannot be reset. Information: All fault codes in the AdBlue® (SCR) control unit have been processed and corrected; however, fault codes P13DF00 and P300685 remain active and stored in the AdBlue® (SCR) control unit. Cause The procedure for resetting the SCR/AdBlue® warning message with XENTRY Diagnosis has not been carried out. Information: Before resetting the SCR/AdBlue® warning message for SCR Generation 4, the AdBlue® system must be in proper working condition and tested.
LI88.30-N-078036_2
Service Bulletin/Repair Instructions
Electric Step will not extend/inoperative Complaint T57 Electric step inop with warning on cluster. Cause Possible damage to end position sensors. Remedy Please remove lower panel on step and inspect for damage to end position sensors. If no damage is found to end position sensors, please continue diagnosis of concern as normal. If damage to end position sensors are found, please check the serial number on step (see attached image of serial number location) If the serial number is below 126050: 1. Please check that the drive motor is secured to the step properly. 2. Replace the end position sensor/sensors and install them in an adjusted position that allows proper clearance between drive and sensor/sensors. (see attached image of sensor position example.) 3. Function test the step at least 5 times to check for proper clearance. If the serial number is 126050 or higher: 1. Please open a TIPS case including images of the damaged sensor/sensors and serial number of step.
LI54.21-N-069524_7
Service Bulletin/Repair Instructions
Diverse messages in the instrument cluster, vehicle will not start, gears cannot be engaged Complaint Vehicle cannot be started, various messages in instrument cluster, gears cannot be engaged, ignition cannot be switched on, central locking has malfunction. Cause Water entry or condensation on vehicle, resulting possibly in oxidation at plug and/or water/moisture entry in control unit N73/8 for Electronic Ignition Lock (EIS) and/or N127 Powertrain Control unit (CPC). Remedy Check control unit N73/8 for Electronic Ignition Lock (EIS) and N127 Powertrain Control unit (CPC) for water entry/moisture traces. If water entry / moisture traces are visible on control unit N73/8 for Electronic Ignition Lock (EIS) and/or N127 Powertrain Control unit (CPC), please localize the leaky area and rectify the leak.
24V5497749
Over The Air
The software for the communication module does not correspond to the latest series production configuration. For this reason, a remote software update to update the software for the communication module is planned for the affected vehicles. This update includes quality-enhancing optimizations for the communication module to improve the system stability and accessibility of connected services. DVUSA is conducting a service campaign. The update is downloaded and installed in the background. This process takes approximately 10 minutes. During installation, the system can be used without restrictions. The new software will become active after the vehicle's ignition cycle.
LI01.10-N-079275
Service Bulletin/Repair Instructions
Internal Diesel Engine Damage or Oil Sludge Formation Complaint Customer reports that the vehicle will not start, is difficult to start, or is making unusual noises. Inspection Findings: Upon inspection, engine bearings—including crankshaft, connection rod, and camshafts—exhibit significant signs of wear. Engine oil shows evidence of sludging, characterized by the presence of thick, gel-like, or semi-solid deposits within the engine. This condition is indicative of oil degradation and/or contamination. Cause Internal engine wear and starting issues are a result of oil sludging. This sludging occurs due to oil degradation and/or contamination. Common contributing factors include: •Failure to perform maintenance on time as indicated by the ASSYST PLUS system •Use of non-OEM (aftermarket) parts or fluids •Addition of incorrect fluids (e.g., AdBlue, washer fluid, coolant) to the engine oil, which can severely compromise lub- rication and engine operation Important: Under no circumstances should any non-engine fluids—such as AdBlue, washer fluid, or coolant—be ad- ded to the engine oil or crankcase. The introduction of these fluids, even in small amounts, can cause severe engine damage. This damage is not covered under warranty. Always verify that only approved engine oil and additives are used during service.
LI54.30-N-079757
Service Bulletin/Repair Instructions
Engine Oil Level Cannot Be Checked via Instrument Cluster Service Menu Complaint Sometimes the engine oil level cannot be determined using the instrument cluster's service menu. The following mes- sages may be displayed: •Engine oil level currently inoperative. See Attachment: Message "Engine oil level currently inoperative" (shown in German on model 907 with code C6L (Multifunction steering wheel)). •Engine oil level measurement is running. Repeat the query after a maximum of 30 minutes of driving time. Information: It is still possible to determine the engine oil level via the workshop menu or XENTRY Diagnostics. Cause No current value for the saved oil volume has been stored in the drivetrain control unit (CPC, N127). Remedy 1. Connect diagnostic device (see AD00.00-D-2000-06TS for model 907). •Always use the latest XENTRY Diagnostics software release with all available add-ons. •Follow all operation steps in XENTRY Diagnosis precisely. 2. Perform initial quick test (see AD00.00-D-2000-06TS for model 907). •Print out the initial quick test as a PDF file and attach it to the order in a tamperproof manner. 3. Create and save the control unit log for drivetrain control unit (CPC, N127). •Print out the control unit log as a PDF file and attach it to the order in a tamperproof manner. •Check the saved oil volume in the "Maintenance data" tab of the control unit log. See Attachment: Saved oil volume in "Maintenance data" tab of the control unit log (shown in German). •If the saved oil volume in the "Maintenance data" tab is more than 0.0 liters and it is not possible to determine the en- gine oil level via the service menu, conduct further research on the exact reason for the customer complaint and initia- te corresponding repair measures. •If the saved oil volume is 0.0 liters, proceed with operation step 4. 4. Check actual values for engine oil level in the engine control unit and observe any relevant information and descrip- tions in XENTRY Diagnosis. •Quick test view → Engine control unit → Actual values → Oil circuit → Oil level gauge 5. Clear fault memory (see AD00.00-D-2000-06TS for model 907). 6. Disconnect diagnostic device (see AD00.00-D-2000-06TS for model 907). 7. Carry out a test drive of more than 30 minutes, run the vehicle in idle for approximately 3 minutes on a level sur- face, switch the ignition off and on again, and then record the engine oil level again using the instrument cluster's ser- vice menu. •Only carry this out if the saved oil volume in the "Maintenance data" tab is 0.0 liters. •When checking the engine oil level via the service menu, refer to the operator's manual. Inform the customer accor- dingly about these circumstances. See Attachment: Message "Engine oil level OK" (shown in German on model 907 with code C6L (Multifunction steering wheel)). 8. If the customer complaint occurs again, create a TIPS case directed to the Powertrain inbox, including all required information from this LI.
LI27.19-N-079793
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 For vehicles with 722.9 transmission: Ensure LI54.15-P-057373 is performed before replacing any component parts. After processing and complying with the above document(s): 1. Perform an ignition reset on Y3/8n4 (VGS) 2. Inspect transmission connector for loose connections, damaged wiring or pins and any other concerns. If communication with the VGS cannot be established, the complete valve body ('electrohydraulic controller unit (EHS)') must be replaced. Installation of a VGS repair kit is not permitted in this case as it is not possible to transfer the necessary valve characteristics without communication with the original control unit.
FTL_V-SC-2025070001
Emissions
Mercedes-Benz AG, the manufacturer of Freightliner Sprinter vans, has determined that on certain Model Years 2017-2021 Sprinter vehicles, the In Use Monitor Performance Ratio (“IUMPR”) function of the OBD system might not perform as intended under certain circumstances.
FTL_V-SC-2025070011
Emissions
Mercedes-Benz AG, the manufacturer of Freightliner Sprinter vans, has determined that on certain Model Years 2019-2021 Sprinter vehicles, the SCR control unit software does not correspond to the current series production configuration.
LI49.20-N-079593
Service Bulletin/Repair Instructions
Check engine light with fault code P20EEFE in the CDI control unit CDI (N3/47) Complaint Check engine light is illuminated with fault code P20EEFE "The efficiency of component 'SCR catalytic converter' is not sufficient" stored in the CDI control unit (N3/47). Cause Excessive ammonia slip is being detected in the SCR system, often triggered by IUMPR (In-Use Monitor Performance Ratio) thresholds. This typically indicates that the SCR catalyst is not converting DEF (AdBlue) efficiently under moni- tored conditions. Common Driving Scenario: •Non-dynamic driving (e.g., highway cruising with cruise control set) •Minimal load changes, steady-state exhaust flow Contributing Factors: •Software influence – IUMPR (In-Use Monitor Performance Ratio) thresholds •DEF Overdosing – Over-injection due to faulty NOx sensors, dosing valve issues, or poor DEF quality •Low Exhaust or Catalyst Temperatures – Common under low-load conditions; reduces SCR conversion efficiency •Catalyst Degradation or Contamination – Aging catalyst or contamination from oil, coolant, or poor-quality DEF Remedy IMPORTANT: Do not replace any components unless instructed through TIPS. For Model Year 2019–2021 Vehicles: •Update the following control units to the latest available software: N3/47 - Motor electronics 'CDI43' for combustion engine 'OM651' (CDI) N118/5 - Selective catalytic reduction (SCR GEN3) •If no newer software is available, proceed with the inspection and documentation steps listed under the No Newer Software section. •Once all inspections are complete, open a TIPS case directed to the Powertrain Inbox, referencing this LI with the collected information and data. No Newer Software Vehicles: Perform the following steps in order. Document all findings with photos and actual values where applicable: 1. Tailpipe Wipe Test •Perform and photograph results. 2. NOx Sensor Harness Inspection •Check connectors, pins, crimps, and harnesses 3. Sensor Plausibility Checks •Record actual values for all pressure and temperature sensors: •Once with the engine cold (≥8 hours off) •Again, at full operating temp, engine idling 4. Smoke Test – Intake, Charge Air, Exhaust •Apply ≤26 psi from the tailpipe. •Seal at clean air line. •Manipulate components during the test. •Document any leaks. 5. DPF Data •Record actual values and regeneration history. 6. SCR Temp Sensor Wiring •Inspect wiring and pins. •Confirm sensor reaches operating temp while driving. •Document time to temp. 7. AdBlue Injector Inspection •Check for clogging or leaks. •Photograph nozzle(s). 8. AdBlue Pressure Test •Remove injector(s), perform 2–3 pressure tests. •Check for leaks and document with photos. 9. DEF Quality Check •Collect a sample. •Note color, clarity, separation, odor, and quantity. •Photograph the fluid and spray pattern. 10. DPF & SCR Visual Inspection •Separate exhaust downstream of DPF. •Inspect for soot, blockage, or damage. •Photograph findings. 11. SCR Catalyst Interior •Inspect for dried AdBlue residue. •Photograph the interior. 12. NOx Sensor Graphing •Perform multiple test drives at varying speeds. •Capture 3–4 graphs/screenshots of NOx sensor signals using XENTRY. •Include one at idle, engine warm. •Disconnect AdBlue valve, drive 30 min, capture 2–3 more graphs. •Once all inspections are complete, open a TIPS case directed to the Powertrain Inbox, referencing this LI with the collected information and data.
LI49.20-N-076565
Service Bulletin/Repair Instructions
Check engine light with fault code P300E3B in the CDI control unit CDI (N3/28) Complaint Check engine light is illuminated with fault code P300E3B “The efficiency of component 'SCR catalytic converter' is not sufficient" stored in the CDI control unit (N3/28). Cause Excessive ammonia slip is being detected in the SCR system, often triggered by IUMPR (In-Use Monitor Performance Ratio) thresholds. This typically indicates that the SCR catalyst is not converting DEF (AdBlue) efficiently under moni- tored conditions. Common Driving Scenario: •Non-dynamic driving (e.g., highway cruising with cruise control set) •Minimal load changes, steady-state exhaust flow Contributing Factors: •Software influence – IUMPR (In-Use Monitor Performance Ratio) thresholds •DEF Overdosing – Over-injection due to faulty NOx sensors, dosing valve issues, or poor DEF quality •Low Exhaust or Catalyst Temperatures – Common under low-load conditions; reduces SCR conversion efficiency •Catalyst Degradation or Contamination – Aging catalyst or contamination from oil, coolant, or poor-quality DEF Remedy IMPORTANT: Do not replace any components unless instructed through TIPS. For Model Year 2019–2021 Vehicles: •Update the following control units to the latest available software: N3/28 – Motor Electronics 'CDI61NFZ' for combustion engine 'OM642' (CDI):
LI49.20-N-079157_6
Service Bulletin/Repair Instructions
Complaint The check engine light is activated, accompanied by one or more of the following fault codes related to the Adblue System: •P20F409: The Adblue consumption is too low. There is a component fault. •P202E84: The Adblue metering valve 1 (Motor side) has a malfunction. There is a signal below the permissible limit value. Cause The potential causes for these fault codes are: A. A leak in the Adblue System B. An internal fault with the Adblue Injection Valve #1 (Motor side) C. An air pocket forming in the Adblue Injection Valve #1 (Motor side) Adblue Injector Line Remedy Vehicles Produced Before August 1, 2024 (Code XY4 = MY24) A. Leak in the AdBlue System 1. Complete the Guided Tests for DTC P20F409 or P202E84: •Inspect the AdBlue tank, pump, line, and both injectors for leaks. •Ensure the AdBlue line is properly routed, securely fastened, and not in contact with the exhaust system. •Remove both AdBlue injection valves, perform 2–3 pressure build-ups, and check for AdBlue leaks. •If a leak is detected, repair it and retest. B. Internal Fault with AdBlue Injection Valve #1 (Motor Side) 1. Process All Other Related DTCs First: •Address any other fault codes relating to AdBlue injection valves before proceeding. •If AdBlue Injection Valve #1 (engine side) fails the guided tests, replace it and retest. C. Air Pocket Forming in the AdBlue Line (Motor Side) 1. If Guided Tests Pass and No Leaks are Found: --Do not replace any components.-- •The MY23-24 (Code XY4 = MY24, OM654) AdBlue line (A907 470 01 01) has a known design issue that can cause air pockets and DTC P20F409. This may also result in DTC P202E84, depending on the air pocket size. •The guided tests for P20F409 now include resetting the learned values for the AdBlue delivery pump (A103m1). After this, the vehicle can be released to the customer. NOTE: Replacing the AdBlue tank or line will NOT resolve this air pocket issue. TIPS cases are no longer required for MY23–24 vehicles. Steps to Perform (MY23–24, Code XY4): 1. Complete the guided tests for DTC P20F409 and/or P202E84. 2. Perform an initial start-up of: •The SCR control unit •AdBlue tank components •Both AdBlue injectors 3. Conduct a 20-mile test drive. If no faults occur, the vehicle can be released. 4. Inform the customer that frequent starting/stopping increases the likelihood of this fault due to repeated cycling of AdBlue in/out of the line each ignition cycle. Vehicles Produced After August 1, 2024 (Code XY5 = MY25) A. Leak in the AdBlue System 1. Complete the Guided Tests for DTC P20F409 or P202E84: •Inspect the AdBlue tank, pump, line, and both injectors for leaks. •Ensure the AdBlue line is properly routed, securely fastened, and not in contact with the exhaust system. •Remove both AdBlue injection valves, perform 2–3 pressure build-ups, and check for AdBlue leaks. •If a leak is detected, repair it and retest. B. Internal Fault with AdBlue Injection Valve #1 (Motor Side) 1. Process All Other Related DTCs First: •Address any other fault codes relating to AdBlue injection valves before proceeding. •If AdBlue Injection Valve #1 (engine side) fails the guided tests, replace it and retest. C. Incorrect AdBlue Injection Line Installed 1. Verify the Updated Line is Installed: •Confirm that part number A907 470 33 02 is present. •If the AdBlue line is incorrect (e.g., A907 470 01 01), replace it with the updated line. TIPS Case Instructions for All MY25 and Newer Vehicles If you encounter any of the issues above on any MY25 or newer vehicle, including finding an incorrect AdBlue line in- stalled: •Open a TIPS case addressed to the Powertrain inbox. •Reference this LI document. •Include the following information: •Description of the issue encountered (e.g., fault code, check engine light, or incorrect AdBlue injection line) •Current Quick Test, SCR N118/5 Control Unit Log, and Guided Test results. •Photo of AdBlue line part number label. •Photos documenting any issues, leaks, or melting observed
LI14.30-N-075882_6
Service Bulletin/Repair Instructions
Check engine light active - Fault P3007F1, P3007F2, P300CA8, or P300CA9 present in CDI control unit Complaint Check engine warning light active. The following fault codes may be present in the engine control unit: • P3007F1 Leak detected in intake air system or • P3007F2 Mass air flow malfunction in intake air system (cylinder bank 1) or • P300CA8 Leak detected in intake air system or • P300CA9 Mass air flow malfunction in intake air system (cylinder bank 1) or • P300CA9 and P3007F1: Faults are present simultaneously in the quick test Cause Causes for FC P3007F1 or P300CA8: Faults are set if: • If there is a leakage upstream of the exhaust gas turbocharger (see "Dichtring_Sealant.jpg"). • If the housing intermediate flange at the high-pressure EGR valve (where the exhaust back pressure sensor connects) is carbonized or clogged, or if there is carbonization/incomplete sealing of the high-pressure or low- pressure EGR valves. (See “Gehaeusezwischenflansch_intermediate_flange.jpg” and “verstopfter_Gehaeuse- zwischenflansch_clogged_Intermediate_Flange.jpg.”) • Note: Only relevant if correction value in load range 1 is less than -8%. • If the intake manifold (charge air distribution line) or charge air cooler is carbonized (see "Saugrohr_intake_mani- fold.jpg"). • If engine timing is misadjusted. • There is a defective hot film mass air flow sensor or a hot film mass air flow sensor that is affected by incorrect airflow (this can be due to a clogged or deformed air filter). Refer to the attached file "Luftfilter_air_filter." Cause for FC P3007F2 or P300CA9: Faults are set if: • There is a leak downstream of the exhaust gas turbocharger. • The charge air distribution line (intake manifold) is heavily carbonized (see "Saugrohr_intake_manifold.jpg"). • There is carbonization or incomplete closure of the high-pressure exhaust gas recirculation valve, especially in the housing intermediate flange at the EGR valve (linked to the exhaust back pressure sensor). • There is a defective hot film mass air flow sensor, or it is affected by incorrect airflow due to a clogged or defor- med air filter (see "Luftfilter_air_filter"). Cause of fault code combination P300CA9 AND P3007F1: Faults are set if: • There is carbonization or incomplete closure of the high-pressure exhaust gas recirculation valve, especially in the housing intermediate flange at the EGR valve (linked to the exhaust back pressure sensor). Charleston Plant Identification – VIN 11th Digit “T”: For vehicles produced at the Charleston Plant (identified by “T” in the 11th digit of the VIN) with a production date on or after 12/20/2023: • If fault code P3007F1 or P300CA8 is set and the cause is identified as a loose or mis-installed Clean Air Line from the factory, open an Initial Field Quality (Info Only) case. • Include the current Quick Test and photos showing the Clean Air Line issue. For all other vehicles, continue diagnosis as per the standard instructions. Remedy In the case of fault code P3007F1 or P300CA8: 1) Check for Required ECU Software Update (Applies to P300CA8 only)
LI14.20-N-079253_3
Service Bulletin/Repair Instructions
Check engine light with fault code P300E55 with H12 Complaint The check engine light is activated, accompanied by the following fault code related to the Exhaust gas recirculation cooler (low pressure): •P300E55 The efficiency of component 'Exhaust gas recirculation cooler (low pressure)' is not sufficient. Cause The issue is attributed to an error in the coding of the climate control unit software (HVAC177). Remedy Software Update Instructions Please proceed as follows for the different variants:
LI47.70-N-079422_1
Service Bulletin/Repair Instructions
HV battery is not charging to its full capacity with restricted maximum SoC Complaint The vehicle's HV battery is not charging to its full capacity, with the maximum State of Charge (SoC) being restricted to a specific percentage. Cause The State of Charge (SoC) percentage limitation might be influenced by the Onboard Logic Unit (OLU), MBUX Headunit, or the Powertrain Control Unit (PTCU). Remedy If the Onboard Logic Unit (OLU) and MBUX Headunit do not impose a SoC percentage limitation, then proceed with the SCN coding of the Powertrain Control Unit (PTCU).
LI01.10-N-079275_1
Service Bulletin/Repair Instructions
Internal Diesel Engine Damage or Oil Sludge Formation Complaint Customer reports that the vehicle will not start, is difficult to start, or is making unusual noises. Inspection Findings: Upon inspection, engine bearings—including crankshaft, connection rod, and camshafts—exhibit significant signs of wear. Engine oil shows evidence of sludging, characterized by the presence of thick, gel-like, or semi-solid deposits within the engine. This condition is indicative of oil degradation and/or contamination. Cause Internal engine wear and starting issues are a result of oil sludging. This sludging occurs due to oil degradation and/or contamination. Common contributing factors include: •Failure to perform maintenance on time as indicated by the ASSYST PLUS system •Use of non-OEM (aftermarket) parts or fluids •Addition of incorrect fluids (e.g., AdBlue, washer fluid, coolant) to the engine oil, which can severely compromise lub- rication and engine operation Important: Under no circumstances should any non-engine fluids—such as AdBlue, washer fluid, or coolant—be ad- ded to the engine oil or crankcase. The introduction of these fluids, even in small amounts, can cause severe engine damage. This damage is not covered under warranty. Always verify that only approved engine oil and additives are used during service. Remedy To thoroughly diagnose internal engine wear or oil sludging, follow these guidelines: Maintenance History •Verify maintenance intervals: Check that all maintenance has been performed on schedule as indicated by the ASSYST PLUS system in the Instrument Cluster and according to WIS. (Refer to Attachments) •Review records: Examine the vehicle’s service history using resources like VMI, CarFax, and any documentation pro- vided by the customer. •Validate parts and fluids: Confirm all maintenance was carried out using OEM-approved parts and fluids as specified in the Owner’s Manual and Maintenance Booklet.
LI14.20-N-079253
Service Bulletin/Repair Instructions
Complaint The check engine light is activated, accompanied by the following fault code related to the Exhaust gas recirculation cooler (low pressure): •P300E55 The efficiency of component 'Exhaust gas recirculation cooler (low pressure)' is not sufficient. Cause The issue is attributed to an error in the coding of the climate control unit software (HVAC177). Remedy A software update to correct the coding error is currently in the process of release for the Aftersales network. In the interim, please proceed as follows: •Erase the fault memory (DTCs) from the control unit. •Return the vehicle to the customer. •No further diagnostic or repair procedures are required at this time.
LI49.20-N-079157
Service Bulletin/Repair Instructions
Complaint The check engine light is activated, accompanied by one or more of the following fault codes related to the Adblue System: •P20F409: The Adblue consumption is too low. There is a component fault. •P202E84: The Adblue metering valve 1 (Motor side) has a malfunction. There is a signal below the permissible limit value. Cause The potential causes for these fault codes are: A. A leak in the Adblue System B. An internal fault with the Adblue Injection Valve #1 (Motor side) C. An air pocket forming in the Adblue Injection Valve #1 (Motor side) Adblue Injector Line Remedy --Prior To Production Date 08/01/2024 Code XY4 = MY24-- A. A Leak in the Adblue System 1. Complete the Guided Tests for P20F409 or P202E84: •Perform a thorough inspection of the Adblue Tank, the Adblue Pump, the Adblue Line, and both Adblue Injectors for leaks. •Ensure the Adblue line is properly installed, securely fastened in all clips, and not in contact with the exhaust system. •Remove both Adblue Injection Valves and complete 2-3 pressure build-ups and inspect for Adblue leakage. •If a leak is identified, repair it and retest. B. An internal fault with the Adblue Injection Valve #1 (Motor side) 1. Process Other Fault Codes First: •If there are other fault codes for the Adblue Injection Valves, address these first. •If the Adblue Injection Valve #1 (engine side) fails the guided tests, replace it and retest. C. An air pocket forming in the AdBlue Line (Motor side) 1. If Guided Tests Pass and No Leaks are Found: •Do not replace any components. •Germany has identified the root cause of fault code P20F409 and is working on a solution. The design of the MY23-24, Code XY4 = MY24, OM654 AdBlue Line (A907 470 01 01) is causing air pockets in the system, resulting in fault code P20F409. Depending on the size of the air pocket, you may also encounter fault code P202E84 AdBlue Metering Valve 1 (Motor side). •The guided tests for fault code P20F409 have been updated to include the resetting of learned values for component ‘A103m1 (AdBlue delivery pump)’ and to release the vehicle back to the client.
EGR Valve
Warranty Program/Extension
In our continuing efforts to assure the proper performance of our products and to ensure the satisfaction of our customers, the warranty for the EGR Valve in the vehicles listed below has been extended from the original 5 years/100,000 miles to 15 years/150,000 miles, whichever occurs first. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz Sprinter vehicles, has determined that dimensional variations during engine valve seating may cause the exhaust gas recirculation (“EGR”) valve to be switched-off and the vehicle may experience a loss of power and enter a limp home mode. The MIL will illuminate and remain illuminated until the vehicle is serviced. When this occurs, the driver may perceive a jerky driving experience while operating the vehicle. An authorized Mercedes-Benz Sprinter dealer will clean and/or replace the EGR valve free of charge for the customer.
LI09.40-N-079144_4
Service Bulletin/Repair Instructions
Check engine light with reduced power with fault codes P300A6D, P300974, P300DFB, or P300DE8 Complaint: The check engine light is activated, accompanied by one or more of the following fault codes related to the Boost Pressure Positioner: • P300A6D The boost pressure is too low. Charge Air Cooler. • P300974 Component 'Boost pressure positioner' has a malfunction. The boost pressure is too low. • P300DFB Component 'Boost pressure positioner' has a malfunction. • P300DE8 Boost pressure control A has a malfunction after the cold start. Cause: The potential causes for these fault codes are: A. Leak or Blockage in the Intake or Charge Air System: This can prevent the proper flow of air, affecting the boost pressure. B. Insufficient Source Vacuum, Vacuum Leak, or Sticking/Weak Vacuum Component: These issues can prevent the boost pressure positioner from functioning correctly. C. Internal Malfunction of the Boost Pressure Positioner: The component itself may be faulty. D. Internal Defect with the Variable Turbine Geometry (VTG) System inside the Turbocharger: Issues within the turbo-charger can affect boost pressure control.
LI09.41-N-079165_1
Service Bulletin/Repair Instructions
Low Coolant Warning, Potential Misfire, and Absence of External Coolant Leaks Complaint Low Coolant warning with possible engine misfire caused by a leaking Charge Air Cooler (Intercooler), accompanied by one or more of the following possible fault codes related to the coolant system: P30040B: Component 'Temperature sensor downstream of charge air cooler' has an open circuit or short circuit to po- sitive. P25567B: Sensor 'Coolant level' has a malfunction. The fluid level is too low. Cause The potential causes for this topic are: A. A leak in the Coolant System, other than the Charge Air Cooler. B. An Internal leak of the Charge Air Cooler. C. An unapproved/aftermarket upfit or modification to the coolant system. Remedy A. A leak in the Coolant System, other than the Charge Air Cooler 1. Complete a coolant system pressure test: •Refer to WIS Doc AR20.00-D-1011TS - Check engine cooling system for leak tightness. •Use Tester Cap 210 589 00 91 and Pressure Pump 124 589 24 21 00. •Apply test pressure to the engine cooling system. Do not exceed the specified test pressure of 1.5 Bar to prevent da- mage to the engine cooling system. •Perform a visual check on the top and bottom of the engine compartment and in the vehicle interior. •If coolant loss or pressure loss is present, perform suitable repair measures depending on the vehicle equipment. •If NO signs of coolant loss are found but pressure loss is present, proceed to Step B.
LI01.20-N-079115_1
Service Bulletin/Repair Instructions
Check engine light illuminated - Fault code current P04D-B79 The crankcase ventilation system is interrupted. Complaint: Check engine light on. Fault code P04DB79 is current in the engine control module (N3/10). Cause: Open circuit or high resistance to crankcase vent line contact Remedy 1. Check the electrical connector for S208 vent line contact switch. Refer to attached photo of connection location. 2. Ensure the bolted connection is secure and bolt can be torqued (9Nm). 3. Check continuity from vent line connection to ME control unit. Repair wire if damage is found.
LI49.20-N-078838
Service Bulletin/Repair Instructions
Check engine light or Adblue warning with fault codes P206B31, P203B31, or P300494 when outside temperatures are below 32 degrees Fahrenheit. SCR Gen4 (KP7) Complaint: The check engine light or AdBlue warning is activated, accompanied by one or more of the following fault codes rela- ted to the AdBlue tank: P206B31: Malfunction of the concentration sensor for AdBlue; the signal is absent. P203B31: Malfunction of the AdBlue fill level sensor; the signal is absent. P300494: The quality of the AdBlue is insufficient. Cause: A. The software for the AdBlue (SCR) control unit (N118/5) is outdated. B. The concentration of AdBlue is either above or below the Mercedes-Benz specifications, which can lead to prema- ture freezing. C. Frozen or partially frozen AdBlue can cause the AdBlue level sensor to misread levels. D. The AdBlue level sensor is damaged.
LI47.10-N-079010
Service Bulletin/Repair Instructions
Procedure for When Diesel Fuel Tank is Filled with Incorrect Fuel Type Complaint: Procedure for When Diesel Fuel Tank is Filled with Incorrect Fuel Type (e.g., gasoline, water, biodiesel, AdBlue/DEF) Cause: The incorrect fuel type, such as gasoline, water, biodiesel, or AdBlue/DEF has been added to the fuel system.
LI82.35-N-078930
Service Bulletin/Repair Instructions
Warning Lamp "Washer Fluid Empty" Yet Reservoir Is Not Empty Complaint: Warning lamp "washer fluid empty", even thought the washer fluid reservoir is full Cause: Insufficient electrical conductivity of the washer fluid, as the washer fluid was mixed with distilled water. Tip: The washer fluid sensor detects the electrical conductivity. If air is present without electrical conductivity between the measuring points, as is the case with an empty tank, an empty tank is detected by the sensor. Distilled water also does not have electrical conductivity, meaning that the sensor detects an empty tank, even if this is not the case. Remedy: Fill reservoir with standard washer fluid and water (no distilled water) in an adequate ratio in order to ensure electrical conductivity. Exchange of the reservoir with a welded-in sensor is only required if filling with conductive washer fluid has not provi- ded a remedy. This can be made certain by utilizing water with a light amount of salt dissolved in to it for stronger con- ductivity.
LI07.70-N-078824
Service Bulletin/Repair Instructions
Complaint Fault code P06DA00 is found current or stored in engine control unit. Check engine light may be activated. Cause Various causes Remedy Up to Model year 2018: Fault code P06DA00 can be disregarded if not activating the check engine light, unless otherwise specified in the gui- ded test. The vehicle continues to operate as designed. Further causes should be investigated if complaint of check engine light is received. Model year 2019 and later: Fault code P06DA00 will activate check engine light as of model year 2019. No driveability concerns will be observed, only illumination of the CEL. This fault code indicates high resistance or open in the circuit to Y130 oil pump control valve. Perform guided test for component Y130 under list of tests in ME. Diagnose location of high resistance or open in Y130 circuit and repair as necessary. Warranty claims submitted without supporting guided test results may be subject to debit.
LI49.20-N-075995_3
Service Bulletin/Repair Instructions
Vehicles with SCR Generation 4: SCR/AdBlue warning message cannot be reset (P13DF00)
LI49.00-N-078608
Service Bulletin/Repair Instructions
SMOG/Emissions Test fail due to one or more Readiness Monitors not set Complaint: The vehicle has failed the State Emissions Certification because one or more of the OBDII readiness monitors are not completely set. Cause: One or more of the following Readiness Monitors are not fully set within XENTRY: Misfire Monitoring - Injection System Fuel System Monitoring - Injection System, Fuel System, EGR Valve, O2 Sensor NMHC Catalyst Monitoring - NMHC/Diesel Oxidation Catalyst NOx Aftertreatment Monitoring - SCR Catalyst System Boost Pressure System Monitoring - Turbocharger, Charge Air System Exhaust Gas Sensor Monitoring - O2 Sensor, NOx Sensors Diesel Particulate Filter Monitoring - Diesel Particulate Filter System Exhaust Gas Recirculation System Monitoring - EGR Valve and system Remedy: Please complete the required driving conditions to fully set the incomplete Readiness Monitor. DO NOT: - Erase any fault codes. If fault codes are present, process these and allow the readiness drives to clear fault codes. - Flash or SCN code the CDI or SCR control units. - Perform a manual DPF regeneration, unless instructed below. - Disconnect the main battery.
LI08.10-N-078545
Service Bulletin/Repair Instructions
Complaint: Noises when reversing slowly <5 km/h (squeaking) Cause: There is a seal in the electric drivetrain that seals off the coolant system from the electric motor. This seal is moistened with coolant during forward travel. As a result of the change in rotational direction when reversing slowly, it may be the case that this sealing ring is no longer moistened. Squeaking noises may occur as a result of the so-called "stick-slip effect". This behavior does not impact the function or durability of the sealing ring and electric drivetrain. Remedy: Do not replace any parts. Explain the cause of the noises to the customer.
LI88.30-N-078036
Service Bulletin/Repair Instructions
Complaint T57 Electric step inoperative with warning on cluster. Cause Possible damage to end position sensors.
LI72.10-N-077998
Service Bulletin/Repair Instructions
Complaint Front door collides with fender. Cause Excessive dynamic stress results in permanent deformation of the lower hinge and causes the front door to collide with the fender. This can result in damage to the door holder and the front door at the threaded connection of the door holder.
VS3RADREI
Service Campaign
Mercedes-Benz AG, the manufacturer of Mercedes-Benz Vans, has determined that on certain Sprinter and Metris vehicles, the B-pillar certification label might not contain information on the vehicle's rim size, tire size, and cold tire inflation pressure required under FMVSS 110 or, as applicable, FMVSS 120. In this case, relevant regulatory requirements might not be met. Mercedes-Benz believes this issue has no impact on vehicle safety. Mercedes-Benz intends to submit a petition to NHTSA for exemption from the notification and remedy requirements of 49 U.S.C. chapter 301, pursuant to 49 CFR Part 556, on the basis that this non-compliance is inconsequential as it relates to motor vehicle safety. MBUSA will conduct a service campaign to remedy new vehicles in dealer inventory. An authorized Mercedes-Benz dealer will replace the Certification Label on the affected vehicles.
LI72.10-N-071190
Service Bulletin/Repair Instructions
Complaint: Front door collides with fender. Excessive dynamic stress results in permanent deformation of the lower hinge and causes the front door to collide with the fender. This can result in damage to the door holder and the front door at the threaded connection of the door holder. Remedy: 1. In the event of damage to be claimed under warranty, please follow warranty guidelines 10.11.1 (see note) 2. Damaged body components will need to be repaired or replaced by a MB certified collision center. While at the collision center, please request a visual check for cracks on threaded connection of door holder in front door. 3. Replace lower hinge of front door on affected side of vehicle. (lower hinge will need to be painted) 4. Replace door holder (on both sides) with modified, shortened door holder. 5. For a repeat failure on a vehicle that has been previously repaired with the updated parts, Please create a PTSS case.
2023120017A
Service Bulletin/Repair Instructions
Recall Information.
2024010001
Service Bulletin/Repair Instructions
Check Front Strut Bolt Connec??on
NCU VS3KRA-1
Service Bulletin/Repair Instructions
Please see the atached documents related to the campaign listed above.
NCU-PDV2790611-1
Service Bulletin/Repair Instructions
(RC)Update Park Lock Function
NCU-PDV2790612-1
Service Bulletin/Repair Instructions
(RC)Update Park Lock Function
NCU-PDV2790613-1
Service Bulletin/Repair Instructions
(RC)Update Park Lock Function
NCU-VS3SIMKOM-1
Service Bulletin/Repair Instructions
(RC)Update Hermes Communication Module Software
Tire and Loading
Service Bulletin/Repair Instructions
Replace Tire and Loading Information Label
2022040007
Service Bulletin/Repair Instructions
Check and Replace Certain Seatbelts.
VRC202204007
Service Bulletin/Repair Instructions
Check and Replace Certain Seatbelts.