CXA 08_26_Equalizer Beam
Other
CX Advocate for Twin Steer Equalizer Beam Bushing Wear
Vehicle report
2021 WESTERN STAR 49X
Service bulletins
205 bulletinsTechnical 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.
CXA 08_26_X-Series HD Sus
Other
CX Advocate for X-Series HD Front Suspension Threaded
TSB-54-375-FTL
Service Bulletin/Repair Instructions
Revised Technical Service Bulletin for Removing Odometer Pause Wiring Modifications
PB-47-900-WST
Service Bulletin/Repair Instructions
Parts Bulletin for Fluorosilicone Fuel Tank Cap Seals
TSB-26-007-WST
Service Bulletin/Repair Instructions
Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
CXA 05_26_Equalizer Beam
Other
CX Advocate for Twin Steer Equalizer Beam Bushing Wear
TSB-26-006-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for DT12 Excessive Wear
CXA_01_26_Trans Support
Other
CX Advocate for Aftermarket Transmission Support
FleetCom_ECU Faults
Other
Fleet Communications for Intermittent Connections and ECU Fault Codes
FleetCom_ECP Module
Other
Fleet Communications for ECP (Electronic Control Pneumatic) Module Water Ingress
FleetCom_Heater Core
Other
Fleet Communications for Heater Core Plugging
SS 781-WST
Other
Revised Service Solution for Western Star vehicles with excessive water intrusion into the air system
TSB54-101-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin Low Coolant Sensor
CXA 11_25_ECP Modules
Other
CX Advocate for ECP (Electronic Control Pneumatic) Modules, possible water ingress
CXA 11_25_ECU Faults
Other
CX Advocate for Intermittent Connections and ECU Fault Codes
CXA 11_25_Tech Questions
Other
CX Advocate for Questions/Issues Raised
FleetCom_Low Coolant
Other
Fleet Communications for Low Coolant Sensor
TSB82-003-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for Fixing Unintended Wiper Sweep
TSB-32-020-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for TufTrac M12 Bolts
CXA_10_25_Conmet Oil Pan
Other
CX Advocate for ConMet Oil Pan Insert Additional Issues
CXA_10_25_Cummins X15
Other
CX Advocate for Cummins X15 Power Steering Pump Plumbing
CXA_10_25_J1939 Comm
Other
CX advocate for WST X-Series J1939 Communication Errors with Cummins Engines
CXA_10_25_Low Coolant
Other
CX Advocate for P4, WST X-Series, DD Engines Low/Critical Low Coolant Warnings
CXA_10_25_Odometer Pause
Other
CX Advocate for Removing Odometer Pause Wiring Modifications (TSB-54-375-FTL, TSB-54-100-WST)
CXA_10_25_Tech Questions
Other
CX Advocate for technical questions/issues raised
TSB46-010-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for Cummins X15 Power Steering Pump Plumbing
CXA_9_25_Tech Questions
Other
CX Advocate for technical questions/issues raised
MYCOM_09022025-1
Other
My Communications for UFI 0-Ring Announcement
CXA_8_25_Tech Questions
Other
CX Advocate for technical questions/issues raised
TSB54-100-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for Removing Odometer Pause Wiring Modifications
PB33-005-WST
Service Bulletin/Repair Instructions
Parts Bulletin for Tie Rod Assembly Part Breakdown
CXA_5_25_Headlight Wiring
Other
CX Advocate for Headlight wiring (TSB54-099-WST)
SS765-WST
Other
Service Solution for ECP Solenoid Valve Interim Replacement Parts
TSB26-008-WST
Service Bulletin/Repair Instructions
Service Solution for DT12 Oil Plug Ports
FAB342
Other
Features and Benefits for Detroit Connect Base Service Renewal
FAB343
Other
Features and Benefits for Detroit Connect UpfrontService Extension
SS784-WST
Other
Service Solution for ICC5 Erroneous Electric Power Steering Warning Message
CXA 3_25_NOx
Other
CX Advocate for NOx conversion low faults
CXA 3_25_SAS01T to SAS03T
Other
CX Advocate for SAS01T to SAS03T replacement (TSB54-373-FTL, TSB54-097-WST)
SS781-WST
Other
Service Solution for Western Star vehicles with excessive water intrusion into the air system
CXA 2_25_DA Fault Code
Other
CX Advocate for M2 Plus, 47X, 49X Fault Code 232/524000/19- ECU CPC data error
CXA 2_25_NOx
Other
CX Advocate for NOx conversion low faults
CXA 2_25_Turbo Oil Drain
Other
CX Advocate for turbo oil drain cracking
SS762-WST
Other
Revised Service Solution for X-Series Western Star Fault Code 232/524000/19- ECU CPC data error
SS770-WST
Other
Service Solution for 47X/49X Dual Power Steering Gear Orifice Fittings
TSB01-001-DDC
Service Bulletin/Repair Instructions
Technical Service Bulletin for GHG17 and Newer DD Platform Heavy Duty Oil Pan Drain Plug Inserts
TSB26-006-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for DT12 Excessive Wear
TSB26-007-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for DT12 OVX Transmission Refresh
TSB54-097-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for SAS01T to SAS03T Replacement Information
TSB91-004-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for Repairing Seat Occupancy Sensor for ISRI, SEARS and National Truck Seats
CXA 1_16_CARB Truck Chec
Other
CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
CXA 1_16_DD13 Altitude
Other
CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
CXA 1_16_GATS2.4
Other
CX Advocate for GATS2.4 being expanding to DD15
CXA 1_16_NOx
Other
CX Advocate for NOx conversion low faults
CXA 1_16_Park Brake
Other
CX Advocate for unwanted park brake warning (TSB-54-098-WST)
CXA 1_16_Turbo Oil Drain
Other
CX Advocate for turbo oil drain cracking
SS776-WST
Other
Service Solution for X-Series intermittent no-start and CPC not configured message
SS778-WST
Other
Service Solution for Power Steering Reservoir Fill Cap Venting
SS771-WST
Other
Service Solution for 47X/49X Front Suspension AluminumShackle Bars
ICI24-049
Other
Important Campaign Information letter for SF698 – Third Revised Bulletin
SF698-Bulletin
Service Campaign
Revised Field Service Campaign for Western Star Heated Headlight Parameters
SF698-DLR LTR
Service Campaign
Revised Field Service Campaign for Western Star Heated Headlight Parameters
D24R2-Bulletin
Emissions
Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming
D24R2-DLR LTR
Emissions
Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming
D24R2-OWN LTR
Emissions
Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming
CXA 11_21_CARB Truck Chec
Other
CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
SS768-WST
Other
Service Solution for 47X, 49X, 57X Park brake check valve may be improperly plumbed causing brakes to drag
SS772-WST
Other
Service Solution for X-series Bodybuilder Marker Lights Turn Off While Truck Lights Remain On
TSB54-098-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for Disabling the ‘Park Brake Set / Door Open’ Warning
WI24-019
Warranty Program/Extension
Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair Time Updates
SS769-WST
Other
Service Solution for 49X & 47X with Cummins Engines and eViscous Engine Fan with Communication Issues
CXA_10_17_CARB Truck Chec
Other
CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
CXA_10_17_Wiper Sweep
Other
CX Advocate for WST x-series unintended wiper sweep (TSB82-003-WST)
SS755-WST
Other
Service Solution for X Series Odometer Reading Incorrect With Split Shaft PTO's
CXA 9_24_HDEP HPFL Seal
Other
CX Advocate for HDEP High Pressure Fuel Line Seal Failures
CXA 8_24_AutoElevate Disa
Other
CX Advocate for AutoElevate Disablement Gen5 Engines
CXA 8_24_AutoElevate and
Other
CX Advocate for benefits of Autoelevate and hydrocarbon faults
CXA 8_24_BCA CLDS TSB
Other
CX Advocate for Technical Service Bulletin for New Battery Cable Access (BCA) Parts for Improved Cold Weather Functionality (TSB54-369-FTL, TSB54-095-WST)
CXA 8_24_Conmet Oil Pan
Other
CX Advocate for ConMet Oil Pan Insert Additional Failures
ICI24-031
Other
Important Campaign Information letter for DDC D23M3 - Campaign Reactivated and Extended. Field Service Campaign D23M3 - GHG17 DETROITTM DD16® Vibration Damper Replacement has been extended for an additional 6 months.
TSB54-095-WST
Service Bulletin/Repair Instructions
Revised Technical Service Bulletin for New Battery Cable Access (BCA) Parts for Improved Cold Weather Functionality. Description of Revisions: This bulletin replaces the version dated 07/30/2024. Make has been updated in the described condition.
ICI24-030
Other
Important Campaign Information Letter for SF698 – Second Revised Bulletin
SF698REV2-Bulletin
Service Campaign
Revised Field Service Campaign for Western Star Heated Headlight Parameters. SECOND REVISION: The parameter set was updated to address a potential conflict that affected engine speed control functionality.
SF698REV2-DLR LTR
Service Campaign
Revised Field Service Campaign for Western Star Heated Headlight Parameters. SECOND REVISION: The parameter set was updated to address a potential conflict that affected engine speed control functionality.
CXA 7_24_AutoElevate Disa
Other
CX Advocate for AutoElevate Disablement Gen5 Engines
CXA 7_24_CTP2 Shrtg_SF685
Other
CX Advocate for CTP2 Shortage Recovery – Cummins Only (SF685)
CXA 7_24_Conmet Oil Pan
Other
CX Advocate for ConMet Oil Pan Insert Additional Failures
CXA 7_24_NOx
Other
CX Advocate for NOx conversion low faults. Update to CXA 6_24_NOx submission.
CALWS54-007
Service Bulletin/Repair Instructions
Customer Advisory Letter for Battery Cable Depopulation Stud Inspection, with or without Jumpstart Post
CXA 06_24_Clutch Bolts
Other
CX Advocate communication for clutch bolts
CXA 06_24_NOx
Other
CX Advocate communication for NOx conversion low faults
SF698-REV-Bulletin
Service Campaign
Revised Field Service Campaign for Western Star Heated Headlight Parameters. REVISION: Clarifying statements and a figure were added to the work instructions between steps 8 and 9 regarding “grayed out” XMC parameters.
SF698-REV-DLR LTR
Service Campaign
Revised Field Service Campaign for Western Star Heated Headlight Parameters. REVISION: Clarifying statements and a figure were added to the work instructions between steps 8 and 9 regarding “grayed out” XMC parameters.
ICI24-024
Service Campaign
Revised Important Campaign Information letter for SF698 - Revised Bulletin. REVISION: Clarifying statements and a figure were added to the work instructions between steps 8 and 9 regarding “grayed out” XMC parameters.
TSB30-001-WST
Service Bulletin/Repair Instructions
Revised Technical Service Bulletin for Off-Road/Low Traction Throttle Parameter Update. Description of Revisions: This bulletin replaces the version dated 02/22/2024. The service bulletin number has been added in the title and the warranty statement is modified.
SF672 POSTCARD LARGE
Service Campaign
Field Service Campaign Owner Reminder Postcard large population
SF672 POSTCARD SMALL
Service Campaign
Field Service Campaign Owner Reminder Postcard small population
SF673 POSTCARD LARGE
Service Campaign
Field Service Campaign Owner Reminder Postcard large population
SF673 POSTCARD SMALL
Service Campaign
Field Service Campaign Owner Reminder Postcard small population
SF698-OWN LTR
Service Campaign
Field Service Campaign for Western Star Heated Headlight Parameters
VSWP Customer Letter
Other
Customer letter regarding variable speed water pump.
SS763-WST
Other
Service Solution for DEF Pump Wiring for Cummins CM2450 Engine Controller
SS3144-FTL
Service Bulletin/Repair Instructions
Service Solution for DEF Pump Wiring for Cummins CM2450 Engine Controller
SF673
Service Bulletin/Repair Instructions
Field Service Campaign for Common Telematics Platform (CTP) Installation and Initialization
FL974
Service Bulletin/Repair Instructions
Revised Emissions Recall: Cummins DEF Sensor Shortage. REVISION: Some vehicles formerly in Group F have been moved to Group G and have been assigned a new part number as specified in Table 1. An SRT for 'Calibration Code Only: Update or Confirm' has been added, as shown in Table 2, to be used when a new DEF header is not required. There have been some other minor changes to the work instructions and SRT times.
ICI24-006
Service Bulletin/Repair Instructions
Important Campaign Information letter for FL974 - Revised Bulletin & Population
ICI24-007
Service Bulletin/Repair Instructions
Important Campaign Information letter for SF669 Campaign Suspended
SF669
Service Bulletin/Repair Instructions
Field Service Campaign for Adaptive Cruise Control
SS759-WST
Service Bulletin/Repair Instructions
Service Solution for 47X & 49X Headlamp Marker Light Strobing or Flickering
SF672_V4
Service Bulletin/Repair Instructions
Revised Field Service Campaign for Common Telematics Platform Software Update
SBW60-028
Service Bulletin/Repair Instructions
Service Bulletin for Relocating the Bluetooth Microphone
SS754-WST2023
Service Bulletin/Repair Instructions
Service Solution for 49X and 47X Web Mounted 5th Wheel Ramps
SBW54-083
Service Bulletin/Repair Instructions
Revised Service Bulletin for HVAC Software Updates. Description of Revisions: This bulletin replaces the version dated 06/21/2022. The model applicability list and the general information have been updated.
SF656
Service Bulletin/Repair Instructions
Field Service Campaign for Western Star 49X Airliner Rear Suspension
SF672
Service Bulletin/Repair Instructions
Field Service Campaign for Common Telematics Platform Software Update
SF642
Service Bulletin/Repair Instructions
Field Service Cmpaign for Western Star 49X Radiator RockGuard & Fan Shroud.
SBW54-087
Service Bulletin/Repair Instructions
Western Star Service Bulletin for Resetting the Maintenance System for DT12 Oil Changes
SF654
Service Bulletin/Repair Instructions
Field Service Campaign for Western Star Front Radar Mounting Bracket
SBW54-089
Service Bulletin/Repair Instructions
Updated Western Star Service Bulletin for Tire Pressure Monitoring System (TPMS) Water Intrusion. This bulletin replaces the version dated 08/17/2022. Information about the protective boot has been updated.
MYCOM_11012022
Service Bulletin/Repair Instructions
My Communications for SF625 and SF657 Pre-Flashed USB Tools. The download files for SF625 and SF657 are no longer available in our download center. In order to perform these updates you will need to order the Pre-Flashed USB tools from the PDC. This will allow for a more efficient and timely service.
SF659
Service Bulletin/Repair Instructions
Field Service Campaign for Western Star 47X and 49X Maintenance System Update. On certain vehicles, the maximum driving distance parameter that prompts notification to change the transmission oil is set incorrectly. The parameter is set to provide an indicator no later than 965,400 km (approx. 600,000 mi), when it should have been set to provide an indicator no later than 300,000 km (approx.186,000 mi).
SBW54-088
Service Bulletin/Repair Instructions
Western Star Service Bulletin for Non-Functioning Heated Headlamps. This service bulletin describes how to resolve non-functioning headlamps on 47X and 49X vehicles. Symptoms of this issue may only appear while operating in cold weather conditions. Snow, ice, and moisture may accumulate on headlight lenses.
SBW54-090
Service Bulletin/Repair Instructions
Western Star Service Bulletin for ABS mBSP ECU Software Update Fault Code 629-11. New Cascadia vehicles manufactured from September 12, 2018 through March 22, 2021 that are equipped with WABCO Anti-Lock Braking System (ABS) controllers log excessive 629-11 fault codes, which can lead to additional downstream fault codes. The ABS controller will receive a software update to eliminate erroneous fault codes and ensure proper function.
ICI22-044
Service Bulletin/Repair Instructions
Important Campaign Information Letter for SF657 â Revised Bulletin. Newest Revision: A screenshot of the DiagnosticLink screen showing in Fig.15 showing 'Activation OK' must be kept on file with the repair order. This letter is to inform you that tools are now required for the SF657 repair, and the work instructions have been updated.
SF657
Service Bulletin/Repair Instructions
Revised Freightliner and Western Star CTP Software Update REVISION: New tools are required. The USB stick with SF657 software already loaded, along with the USB stick to CTP adaptor harness that is On-the-Go (OTG) protocol compliant, now have part numbers that can be purchased through the parts distribution center (PDC).
SBW54-086
Service Bulletin/Repair Instructions
Western Star Service Bulletin for Meritor Rear Axle Temperature Parameters
SS714-WST2022
Service Bulletin/Repair Instructions
Service Solution for Primary Mirror Shaking and Vibration
SF646
Service Bulletin/Repair Instructions
Field Service Campaign for Western Star 47X and 49X Front Closing Crossmember
SS726-WST2022
Service Bulletin/Repair Instructions
Service Solution for 49X & 47X Non FunctioningHeated Headlamps. Heating function of heated headlamps not functioning possible allowing snow and moisture toaccumulate on lens.
SF652
Service Bulletin/Repair Instructions
Western Star Field Service Campaign for Western Star 49X VRDU Programming. On certain vehicles equipped with Side Guard Assist (SGA), the Video Radar Device Unit (VRDU) contains parameters that have proven to be too sensitive for vocational customers.
SF653
Service Bulletin/Repair Instructions
Western Star Field Service Campaign for Western Star 49X SRR Overwrite Sensor Mounting Data Update. On certain vehicles, the Short Range Radar (SRR) sensor, located on the passenger side, contains incorrect mounting position parameters. Incorrect mounting position parameters may cause early warning of passenger side objects.
SS725-WST2022
Service Bulletin/Repair Instructions
Service Solution for Power Steering Cap Contact withHood Strap. Under certain conditions the drivers side hood restraint strap, which is attached to the radiatorand hood, may become lodged behind the power steering cap. When opening the hood, the hood restraint strap may pull on the power steering cap resulting in the cap coming off of the reservoir.
ICI22-017
Service Bulletin/Repair Instructions
Important Campaign Information Letter for DDC D21M1 Termination Date Extended. This letter is to inform you that a revised bulletin for Detroit Diesel Field Service Campaign D21M1, DT12 Transmission Drive Shaft Cover Plug Reseal has been EXTENDED for an additional three months. Please use the extended termination date for all work under D21M1 from this point forward. REVISION: D21M1 termination date extended to July 1, 2022.
ICI22-018
Service Bulletin/Repair Instructions
Important Campaign Information Letter for DDC D21M7 Termination Date Extended. This letter is to inform you that a revised bulletin for Detroit Diesel Field Service Campaign D21M7, GHG21 Detroit DD16 CPC Software Reprogramming has been EXTENDED for an additional five months. Please use the extended termination date for all work under D21M7 from this point forward. REVISION: D21M7 termination date extended to April 12, 2023.
SF648
Service Bulletin/Repair Instructions
Field Service Campaign for Western Star 47X and 49X SBA Front Suspension Shackle Bolts. On certain vehicles, the front suspension shackle bar may have a deformed spring pin hole due to lack of clamp load at the spring pin joint, causing a decrease in joint clamp load and movement of the spring pin.
SF634
Service Bulletin/Repair Instructions
Field Service Campaign for Western Star 49X Front Crossmember. A loss of clamp load, in the aft connection of the engine crossmember and frame rail, could result in a frame rail crack.
SS723-WST2022
Service Bulletin/Repair Instructions
Service Solution for 49X Hood Handle Mounting
ICI22-015
Service Bulletin/Repair Instructions
Important Campaign Information letter for SF622 â Addition of 8x4 Vehicles to Populationx
SF622REV
Service Bulletin/Repair Instructions
Revised Field Service Campaign for Cascadia, 49X ABS MBSP+ Controller Software Update
ICI22-014
Service Bulletin/Repair Instructions
Important Campaign Information Letter for SF635 â Work Instructions Revised.
SF635REV
Service Bulletin/Repair Instructions
Revised Western Star Field Service Campaign for Western Star 49X - XMC Software Update
CALWS54-004
Service Bulletin/Repair Instructions
Customer Advisory Letter for Western Star 49X Adaptive Cruise Control
SBW54-082
Service Bulletin/Repair Instructions
Western Star Service Bulletin for Battery Load Disconnect Switch Installation. Cab load disconnect switches (CLDS), also known as positive load disconnect, installed on selected vehicles can reduce battery drain when the vehicle is not operational.
SS715-WST2022
Service Bulletin/Repair Instructions
Transmission Cooler Line Plumbing Fitting. Transmission cooler line plumbing fitting connections at the radiator may have relative movement between rail and radiator allowing fittings to become loose and leak.
SS722-WST2022
Service Bulletin/Repair Instructions
ABA off Switch Instructions. Incorrect programing parameters in the ICUC were not allowing the ABA to be turned off.
SS3083-FTL2021
Service Bulletin/Repair Instructions
Service Solution for Aero Height Control Interfering with RDF Alignment. The Aerodynamic Height Control feature on the New Cascadia is a feature that raises and lowers the air suspension with relation to vehicle speed in order to reduce drag and achieve better fuel efficiency. The Hadley Smart Valve (HSV) is the module that makes this possible by applying and exhausting air from the rear axle suspension as necessary.
SS720-WST2021
Service Bulletin/Repair Instructions
Service Solution for Mirror Mounted Antenna Ground. CB radio and or AM/FM radio difficult to hear incoming audible, cuts out.
21TS-12REV
Service Bulletin/Repair Instructions
Revised Detroit Technical Service Letter for Gen 5 Detroit DD16 Poor Acceleration Complaints In Western Star 49X Chassis When Lightly Loaded. This letter has been removed as more current information is now available in the campaign letter D21M7.
D21M7
Service Bulletin/Repair Instructions
Detroit Field Service Campaign for GHG21 Detroit DD16® CPC Software Reprogramming. All the vehicles in the population require programming the CPC. Some vehicles require programming the ACM, MCM, and TCM (if equipped with a Detroit DT12 transmission) to Model Year 2021 for compatibility. Please refer to the attached work instructions for MINIMUM software versions.
SF641
Service Bulletin/Repair Instructions
Field Service Campaign for Western Star 49X Transmission Cooler Plumbing. Due to normal vibrations combined with inadequate support, the quick-connect fittings on the transmission oil cooler lines may experience excessive wear, leading to a transmission oil leak; if not addressed, this could lead to transmission damage.
SS704-WST2021
Service Bulletin/Repair Instructions
ECP (Electronic Controlled Pneumatics) Ground Noise/False Codes. Internal board of ECP supplied by manufacturer. Audible chirping noise through speakers, leaking air through ECP, continual error codes with no problem found.
SS719-WST2021
Service Bulletin/Repair Instructions
Beacon Light Wiring Harness. Customer installed beacon lights intermittent operation, flicker, do not flash. XMC allows for up to 2amp lights to be used for beacon light installations, some beacon lights in the aftermarket installations are 5amp and greater.
ICI21-030
Service Bulletin/Repair Instructions
SF626 Western Star Window Replacement Inspection Notification. This letter is to inform you that Field Service Campaign SF626 Western Star Window Replacement Inspection Notification campaign was released.
SF635
Service Bulletin/Repair Instructions
XMC Software Update. Due to a software issue with the Xtra Modular Controller (XMC), some body builder-installed electrical components may not work as intended (may be intermittent or non-functioning).
SS705-WST 2021
Service Bulletin/Repair Instructions
Service Solution for XMC Output Reliability. Reliability issue with the six 20 Amp outputs (DO1-DO6) on the XMCâs. A software revision is now available to allow 20 Amp outputs work reliably on XMCâs for 49X.
CTP1Updates
Service Bulletin/Repair Instructions
DetroitConnect follow-up customer communication for certain vehicles unable to complete over the air updates including parameters and DDEC over the air.
MYCOM_091321-3
Service Bulletin/Repair Instructions
My Communication for Detroit Connect Over the Air Issue Update. This is an update for the previously communicated Over the Air functionality issue on CTP1s. We are currently testing a solution for the issue that is affecting these CTP1 telematics devices. While testing is not complete initial results are promising. The solution will require a soft ware update which is currently planned for October/November.
SF636
Service Bulletin/Repair Instructions
Field Service Campaign for Western Star 49X Differential Lock - Parameter Update. Vehicles may automatically disengage the differential lock without warning when vehicle speed reaches 25 mph.
SS711-WST 2021
Service Bulletin/Repair Instructions
Service Solution for Aux E-vault Rattle in Day Cab. Rattle noise inside of cab coming from the e-vault location. Mounting bracket has low fore/aft stiffness
SS717WST-2021
Service Bulletin/Repair Instructions
Service Solution for Door Drain Plug & Water Pooling.
ICI21-027
Service Bulletin/Repair Instructions
Important Campaign Information Letter for SF622 â Campaign Revision/Reactivation. This letter is to inform you that the work instructions for Field Service Campaign SF622, Cascadia/49X ABS MBSP+ Controller Software Update have been revised.
SF622
Service Bulletin/Repair Instructions
Revised Field Service Campaign for Cascadia/49X ABS MBSP+ Controller Software Update. REVISION: The work instructions have been revised. Certain vehicles have a WABCO Anti-Lock Braking System (ABS) controller that logs excessive 629-11 fault codes which subsequently lead to additional downstream fault codes.
21TS-12
Service Bulletin/Repair Instructions
Technical Service Letter for GHG21 Detroit DD16 Poor Acceleration Complaints In Western Star 49X Chassis When Lightly Loaded.
SS3085FTL-2021
Service Bulletin/Repair Instructions
Service Solution for Cummins PTO functionality error software level 81Z-006. Cascadia/Western Star 49X with Cummins engines combined with software level 81Z-006. A programming bug in the central gateway (CGW) for software level 81Z-006 will not allow completion of the preset #2 PTO engine speed. During PTO speed request for anything greater than the #1 set speed , if the Cummins ECU software determines that the increase in speed isn't ramping fast enough, it will refer to an engine torque control setting instead of the engine speed control setting.
SS715WST-2021
Service Bulletin/Repair Instructions
Service Solution for Transmission Cooler Line Plumbing Fitting. Transmission cooler line plumbing fitting connections at the radiator may have relative movement between rail and radiator allowing fittings to become loose and leak.
SS716WST-2021
Service Bulletin/Repair Instructions
Service Solution for Exterior Sun Visor Loose. Leg support of sun visor may debond from visor installation.
WSTTOUGHTALK3
Service Bulletin/Repair Instructions
Western Star Tough Talk episode 3 now available.
SBW54-079
Service Bulletin/Repair Instructions
Western Star Service Bulletin for Replacing 104-Way Terminal Wiring Using a Pigtail Kit. This bulletin contains information required to replace 104-way connector wires or terminals using the properly sized pigtail, as documented in the kit listed in the repair portion of the bulletin.
SS2083FTL2021
Service Bulletin/Repair Instructions
Service Solution for Aero Height Control Interfering with RDF Alignment and 42/523004/13 and 232/524042/9 Active for vehicles equipped with Hadley Smart Valve. The Aerodynamic Height Control feature on the New Cascadia is a feature that raises and lowers the air suspension with relation to vehicle speed in order to reduce drag and achieve better fuel efficiency. The Hadley Smart Valve (HSV) is the module that makes this possible by applying and exhausting air from the rear axle suspension as necessary.
SS709WST2021
Service Bulletin/Repair Instructions
Service Solution for fuel level sending unit loose.
SBW54-080
Service Bulletin/Repair Instructions
Western Star Service Bulletin for Key Fob ID Retention. Key fobs for remote keyless entry on Western Star vehicles are delivered in packages that include a unique ID for the fob. The ID is required when pairing the key fob with a vehicle.
SS702-WST2021
Service Bulletin/Repair Instructions
Western Star Service Solution for hood fender marker lamp. Marker lamp design may allow water to collect internally.
SS705-WST2021REV
Service Bulletin/Repair Instructions
Revised Western Star Service Solution for XMC Output Reliability regarding the six 20 Amp outputs (001-006) on the XMC's.
SS705-WST2021
Service Bulletin/Repair Instructions
Western Star Service Solution for XMC Output Reliability regarding the six 20 Amp outputs (001-006) on the XMC's.
TechTalk566759
Service Bulletin/Repair Instructions
Tech Talk Discussion PTO Parameter DT12 Transmission 49X 2021 WU7373
SS703-WST2021
Service Bulletin/Repair Instructions
Western Star Service Solution for Wheel Cut and Fender Interference. 49X vehicles built with certain 425 size front steer tires interfere with inner fender.
TechTalk566471K
Service Bulletin/Repair Instructions
Tech Talk discussion on enable to send my chec feature in my 49x truck.
SS700-WST2021
Service Bulletin/Repair Instructions
Service Solution for 49X Vertical Exhaust Loose.
D21M1
Service Bulletin/Repair Instructions
Detroit Field Service Campaign for DT12 Transmission Drive Shaft Cover Plug Reseal. Daimler Trucks North America LLC, on behalf of its DETROIT Powertrain Division, is initiating Field Service Campaign D21M1 on certain DT12 transmissions in order to reseal the bypass plugs of the drive shaft cover located in front housing.
WI21-009
Service Bulletin/Repair Instructions
Warranty Information letter announcing that DTNA is increasing the Standard Diagnostic Times (SDTs) shown. The updated after treatment system (ATS) diesel exhaust fluid (DEF) pump times will be applied to repair orders opened on or after April 12, 2021.
WI21-008
Service Bulletin/Repair Instructions
Warranty Information Letter announcing DTNA is adjusting the Standard Repair Times (SRTs) shown. The updated times will be applied to repair orders opened on or after April 5, 2021.
CALFTL54-010REV3
Service Bulletin/Repair Instructions
Revised Customer Advisory Letter for ABS Warning Light Illumination with ABS code SA 11, SPN 629, FMI 11. REVISED: This CAL revises the CAL issued August 10th, 2020. Western Star 49X vehicles have been added to the CAL scope and instructions for downloading and installing software to address the ABS warning light illumination with ABS code SA 11, SPN 629, FMI 11 have replaced the corrective action of the previous CAL.
D21M3
Service Bulletin/Repair Instructions
Detroit Field Service Campaign for DT12 Gear Grind During Downshift Software Update.
DT12 Trans Chafe
Service Bulletin/Repair Instructions
DTNA received a field notification on multiple units regarding diagnostic fault codes that were found to be causing issues to the After Treatment Control Module (ACM). These fault codes indicated that the ACM communication message was not received by the Motor Control Module (MCM) which in certain cases, led to a 25% engine de-rate situation. Further diagnosis revealed that the DT12 wiring harness was chafing and contacting the transmission TCU case. To reduce potential chafing areas, the proposed short-term containment was to route the wiring harness using additional tie straps. This communication applies to Freightliner and Western Star vehicles built with DT12 transmissions.
WP60-100
Service Bulletin/Repair Instructions
Updated Western Star Parts Technical Bulletin for Universal Design Floor Mats. This bulletin replaces the version dated February 12, 2021. Information about parts notes in the Paragon system have been added and the trimming instructions are revised. Universal floor mat designs fit multiple cab configurations and may require trimming. Trim lines displaying size options are scored into the pad side of the mat; use an existing floor mat as a guide for optimal results. The new mat should not interfere with safety-critical equipment, such as foot pedals.
SBW54-078
Service Bulletin/Repair Instructions
Western Star Service Bulletin for Programming Chassis Electronic Control Units (ECUs) With DiagnosticLink.
TechTalk1967K
Service Bulletin/Repair Instructions
Tech Talk discussion on Circuit Load tester.
20TS-07REV
Service Bulletin/Repair Instructions
Revised Technical Service Letter for Cold Weather Faults on GHG17/21 DD13 with MCM Software Version 14. Due to colder weather, there may be an increase in the frequency of faults, noted below, on GHG17/21 DD13 trucks built after June 5th 2019. This is due to a calibration issue in the current MCM software (14.1.1.5 or 14.2.1.3). New software is scheduled for release in the first quarter of 2021 that will address these faults.
21OEM-06
Service Bulletin/Repair Instructions
Starting on November 23, 2020, DiagnosticLink 8.13 (Build 4527) was made available. Current subscribers of DiagnosticLink 8.11 or 8.12 may upgrade to DiagnosticLink 8.13 at no cost. All DTNA Service shops & OEM locations are required to maintain the latest version of software on each of their stations.
21TS-04
Service Bulletin/Repair Instructions
Technical Service Letter for Gen 5 DD15 Instrument Panel Oil Pressure Gauge Operation. Gen 5 DD15 equipped units have been brought in for service with a complaint of the instrument panel oil pressure gauge not moving during unit operation and/or stuck at 50PSI. The instrument panel oil pressure gauge does not operate the same as with previous engine models. Please be advised, this is normal operation and no further diagnostics are required. Do not down a unit for this complaint.
ICI21-003
Service Bulletin/Repair Instructions
Superseding Letter to an Important Campaign Information Letter to announce a reimbursement available to dealers for travel to a customer's location to perform a recall or field service campaign. Potential travel reimbursement applies to DTNA truck dealers and Detroit Diesel distributors. Thomas Built Buses will be addressed separately. This letter supersedes ICI20-022R.
WI21-005
Service Bulletin/Repair Instructions
Warranty Information Letter for Body Builder/Truck Equipment Manufacturer Demonstration Program.
WI21-006
Service Bulletin/Repair Instructions
Warranty Information Letter for Detroit NOx Sensor Circuit Fault Codes - Claim Guidelines.
TechTalk6504
Service Bulletin/Repair Instructions
Tech Talk continued discussion on code spn 523525 fmi 14.
WI20-014R
Service Bulletin/Repair Instructions
Revised Warranty Information Letter for OWL and Warranty Manual Improvement: Sublets and Travel Time/Distance. In the spirit of continuous improvement, DTNA reviewed sublet-related policies and procedures. The goal was to improve language clarity and optimize processes. Revisions are in blue font.
CALWS91-001
Service Bulletin/Repair Instructions
Customer Advisory Letter for Western Star 49X Seat Mismatch. Certain Western Star 49X vehicles equipped with driver and passenger seats that may not match in color, material, or pattern.
WI21-004
Service Bulletin/Repair Instructions
Warranty Information Letter for Detroit Resources: Exploded View DD Platform and DT12 Posters. Detroit's TechComm team created visual aids for the network and released exploded view posters for DD platform engines. In early 2021, Detroit added multiple DT12 posters.
21TS-01
Service Bulletin/Repair Instructions
Technical Service Letter for Detroit Bearing Failures - Standard Diagnostic Times. DTNA is increasing repair strategies for determining the root cause of Detroit DD heavy duty lower end bearing failures. To support this strategy change, Detroit now has two (2) Standard Diagnostic Times (SDTs), easy and difficult, which can be applied to repair orders.
WI21-003
Service Bulletin/Repair Instructions
Warranty Information Letter for Detroit Bearing Failures - Standard Diagnostic Times. DTNA is increasing repair strategies for determining the root cause of Detroit DD heavy duty lower end bearing failures. To support this strategy change, Detroit now has two (2) Standard Diagnostic Times (SDTs), easy and difficult, which can be applied to repair orders.
SBW35-018
Service Bulletin/Repair Instructions
Western Star Service Bulletin for Axle Flange Gasket Replaced with O-Ring. Daimler Trucks North America has released a new axle shaft to hub rubber O-ring (part number 11-30728-000) as a replacement for the paper gasket (part number 11-14418-000). The new O-ring will provide better sealing and is reusable. It is quicker and easier to use compared to the paper gasket, because using a paper gasket requires cleaning the hub when the axle shaft is removed.
SBW42-014
Service Bulletin/Repair Instructions
Western Star Service Bulletin for Access to Front Brake Zerk Fittings. Certain vehicles with Detroit front axles and Meritor EX-L front air disc brakes do not have access to the front brake zerk fittings for lubrication.
CALWS54-003
Service Bulletin/Repair Instructions
Western Star Customer Advisory Letter for WST 49X Video Capture Decision Unit Fuse.
20TS-09
Service Bulletin/Repair Instructions
Technical Service Letter for SPN 3711 FMI 31 on GHG17 DD15 Trucks.
SBW54-057
Service Bulletin/Repair Instructions
Western Star Service Bulletin for Powernet Troubleshooting Guide - Batteries, Path, Alternator, and Starter. When troubleshooting powernet issues, use the BCT-460DTNA PowerNet Assessment Tool. As of May 29, 2018, the AutoMeter is the only Daimler-approved tool for troubleshooting vehicle Powernet issues.
SS1033094
Service Bulletin/Repair Instructions
Service Solution SS 1033094 KUS Float Tube Fuel Level Sensor Inform...
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Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.