2022 Western Star 49X TSBs
255 Technical Service Bulletins across 15 categories
Categories
Pre-Delivery & Maintenance
50 bulletinsRevised Technical Service Bulletin for DT12 Range Detent Diagnostic
Technical Service Bulletin for DT12 Range Detent Diagnostic
Technical Service Bulletin for TufTrac M12 Bolts
Technical Service Bulletin for DT12 Excessive Wear
Technical Service Bulletin for Fixing Unintended Wiper Sweep
Service Solution for DT12 Oil Plug Ports
Features and Benefits for Detroit Connect UpfrontService Extension
Features and Benefits for Detroit Connect Base Service Renewal
Technical Service Bulletin for SAS01T to SAS03T Replacement Information
Technical Service Bulletin for DT12 Excessive Wear
Technical Service Bulletin for GHG17 and Newer DD Platform Heavy Duty Oil Pan Drain Plug Inserts
Service Solution for X-Series intermittent no-start and CPC not configured message
Important Campaign Information letter for SF698 Third Revised Bulletin
Service Solution for X Series Odometer Reading Incorrect With Split Shaft PTO's
Important Campaign Infomration letter for DDC D23M1 - Campaign Extended
Technical Service Bulletin for Fixing Unintended Wiper Sweep
Important Campaign Information letter for DDC D23M3 - Campaign Reactivated and Extended.
Read full bulletin
Field Service Campaign D23M3 - GHG17 DETROITTM DD16 Vibration Damper Replacement has been extended for an additional 6 months.
Important Campaign Information Letter for SF698 Second Revised Bulletin
Revised Important Campaign Information letter for SF698 - Revised Bulletin.
Read full bulletin
REVISION: Clarifying statements and a figure were added to the work instructions between steps 8 and 9 regarding grayed out XMC parameters.
Field Service Campaign Owner Reminder Postcard large population
Field Service Campaign Owner Reminder Postcard small population
Field Service Campaign Owner Reminder Postcard large population
Field Service Campaign Owner Reminder Postcard small population
Field Service Campaign Owner Reminder Postcard large population
Field Service Campaign Owner Reminder Postcard small population
Technical Service Bulletin for New Final Drive Over Heat Diagnostic
Field Service Campaign for Common Telematics Platform (CTP) Installation and Initialization
Important Campaign Information letter for SF669 Campaign Suspended
Important Campaign Information letter for FL974 - Revised Bulletin & Population
Service Solution for X Series Odometer Reading Incorrect With Split Shaft PTOs
Field Service Campaign for Adaptive Cruise Control
Field Service Campaign for Common Telematics Platform
Important Campaign Information Letter for SF665 - Campaign Reactivated
Important Campaign Information Letter for SF665 - Campaign Suspended
Field Service Campaign for Common Telematics Platform
Important Campaign Infomration Letter for SF639 - Campaign Suspended
Field Service Campaign for Freightliner Cascadia and Western Star 47X/49X Fan Controller
Field Service Cmpaign for Western Star 49X Radiator RockGuard & Fan Shroud.
Western Star Service Bulletin for Resetting the Maintenance System for DT12 Oil Changes
Field Service Campaign for Western Star Front Radar Mounting Bracket
Service Solution for Low Power Complaint.
Read full bulletin
When additional floor heat insulation is ordered, the throttle pedal in some cases (when the throttle is fully depressed) may not reach 100% (full throttle). This can also occur if aftermarket floor mats are added to the vehicle.
Field Service Campaign for Western Star 47X and 49X Front Closing Crossmember
Western Star Service Bulletin for Meritor Rear Axle Temperature Parameters
Service Solution for RDF Nuisance J1939 Fault SA 42 SPN 524287 FMI 31
Western Star Field Service Campaign for Western Star 49X VRDU Programming.
Read full bulletin
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.
Important Campaign Information letter for SF622 Addition of 8x4 Vehicles to Populationx
Important Campaign Information Letter for SF635 Work Instructions Revised.
Service Solution for Aux E-vault Rattle in Day Cab.
Read full bulletin
Rattle noise inside of cab coming from the e-vault location. Mounting bracket has low fore/aft stiffness
Service Solution for Exterior Sun Visor Loose.
Read full bulletin
Leg support of sun visor may debond from visor installation.
Western Star Service Bulletin for Key Fob ID Retention.
Read full bulletin
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.
Electrical
36 bulletinsRevised Technical Service Bulletin for Removing Odometer Pause Wiring Modifications
Technical Service Bulletin for ESC warning lamp and ECU replacement
Fleet Communications for Intermittent Connections and ECU Fault Codes
Fleet Communications for ECP (Electronic Control Pneumatic) Module Water Ingress
Technical Service Bulletin Low Coolant Sensor
Fleet Communications for Low Coolant Sensor
CX Advocate for Intermittent Connections and ECU Fault Codes
CX Advocate for ECP (Electronic Control Pneumatic) Modules, possible water ingress
CX Advocate for Removing Odometer Pause Wiring Modifications (TSB-54-375-FTL, TSB-54-100-WST)
Technical Service Bulletin for Removing Odometer Pause Wiring Modifications
CX Advocate for Headlight wiring (TSB54-099-WST)
CX Advocate for M2 Plus, 47X, 49X Fault Code 232/524000/19- ECU CPC data error
Revised Service Solution for X-Series Western Star Fault Code 232/524000/19- ECU CPC data error
Technical Service Bulletin for Repairing Seat Occupancy Sensor for ISRI, SEARS and National Truck Seats
CX Advocate for Technical Service Bulletin for New Battery Cable Access (BCA) Parts for Improved Cold Weather...
Read full bulletin
Functionality (TSB54-369-FTL, TSB54-095-WST)
Revised Technical Service Bulletin for New Battery Cable Access (BCA) Parts for Improved Cold Weather Functionality.
Read full bulletin
Description of Revisions: This bulletin replaces the version dated 07/30/2024. Make has been updated in the described condition.
Technical Service Bulletin for New Battery Cable Access (BCA) Parts for Improved Cold Weather Functionality
Customer Advisory Letter for Battery Cable Depopulation Stud Inspection, with or without Jumpstart Post
Revised Emissions Recall: Cummins DEF Sensor Shortage.
Read full bulletin
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.
Emissions Recall: Cummins DEF Sensor Shortage
Revised Field Service Campaign for Western Star Snow Plow Light Harness
Field Service Campaign for Western Star Snow Plow Light Harness
Field Service Campaign for Integrated Predictive Powertrain Control ECU.
Read full bulletin
Resubmitting to fix a table formatting issue.
Revised Field Service Campaign for Integrated Predictive Powertrain Control ECU.
Read full bulletin
REVISION: The bulletin has been revised to add additional work instruction steps to remedy errors encountered during the flashing process.
Revised Field Service Campaign for Integrated Predictive Powertrain Control ECU
Important Campaign Information Letter for SF658 Revised Bulletin, Intelligent Powertrain Management ECU
Field Service Campaign for Integrated Predictive Powertrain Control ECU.
Read full bulletin
Certain vehicles requesting Intelligent Powertrain Management, were shipped without the Integrated Predictive Powertrain Control (IPPC) module required to enable the feature. The IPPC module will be installed and software updated.
Field Service Campaign for Side Guard Assist.
Read full bulletin
Certain vehicles, ordered with the optional Side Guard Assist (SGA) feature, were shipped with non-functional short range radar (SRR) sensors due to shortages from the sensor supplier. The non-functional SRR sensors will be replaced with the new functional sensors.
Revised Freightliner and Western Star CTP Software Update REVISION: New tools are required.
Read full bulletin
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).
Western Star Field Service Campaign for Western Star 49X SRR Overwrite Sensor Mounting Data Update.
Read full bulletin
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.
Service Solution for ShipShort Intelligent Powertrain Management (IPM).
Read full bulletin
Due to electronic control supply shortages, vehicles shipped without the Intelligent Powertrain Predictive Cruise (IPPC) module. The purpose of the IPPC module is to improve fuel efficiency when the Predictive Cruise Control feature is enabled. Not having the IPM does not affect othercruise control functions, such as Adaptive Cruise Control or standard cruise control.
Western Star Service Bulletin for Battery Load Disconnect Switch Installation.
Read full bulletin
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.
Beacon Light Wiring Harness.
Read full bulletin
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.
XMC Software Update. Due to a software issue with the Xtra Modular Controller (XMC), some body builder-installed...
Read full bulletin
electrical components may not work as intended (may be intermittent or non-functioning).
Continued Supply Shortages Impacting Battery Disconnect Components
Western Star Service Bulletin for Replacing 104-Way Terminal Wiring Using a Pigtail Kit.
Read full bulletin
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.
Engine
36 bulletinsCX Advocate for P4, WST X-Series, DD Engines Low/Critical Low Coolant Warnings
CX advocate for WST X-Series J1939 Communication Errors with Cummins Engines
Revised Customer Service Annoucement for No Trouble Found Heavy Duty Engine Product (HDEP) Oil Separator Leaks
Service Solution for ECP Solenoid Valve Interim Replacement Parts
CX Advocate for DPF Outlet Temp High Gen5 DD15 ENGINES
CX Advocate for DPF Outlet Temp High Gen5 DD15 ENGINES
CX Advocate for turbo oil drain cracking
Technical Service Bulletin for Gen 5 DD13 Turbocharger Oil Return Line Cracks
CX Advocate for turbo oil drain cracking
CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
Service Solution for 47X, 49X, 57X Park brake check valve may be improperly plumbed causing brakes to drag
Service Solution for 49X & 47X with Cummins Engines and eViscous Engine Fan with Communication Issues
Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
Customer Service Annoucement for Discolored Coolant Surge Tank on Heavy Duty Engine Product (HDEP)
Customer Service Annoucement for Heavy-Duty Engine Product (HDEP) Oil Separator Leaks
Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
Detroit Customer Service Annoucement for Gen 5 DD15 Cylinder Head Cup Plug Replacement
Cleaning Gen5 Engine Fuel Injectors
CX Advocate for AutoElevate Disablement Gen5 Engines
Field Service Campaign for Common Telematics Platform Cummins Engine.
Read full bulletin
Certain vehicles specd with a Common Telematics Platform (CTP2) were shipped without the CTP2 due to shortages from the supplier.
Field Service Campaign for Common Telematics Platform Cummins Engine.
Read full bulletin
Certain vehicles specd with a Common Telematics Platform (CTP2) were shipped without the CTP2 due to shortages from the supplier.
Field Service Campaign for Common Telematics Platform Cummins Engine.
Read full bulletin
Certain vehicles specd with a Common Telematics Platform (CTP2) were shipped without the CTP2 due to shortages from the supplier.
CX Advocate for DPF Outlet Temp High Gen5 DD15 ENGINES
CX Advocate for AutoElevate Disablement Gen5 Engines
Revised Field Service Campaign for Western Star Heated Headlight Parameters.
Read full bulletin
SECOND REVISION: The parameter set was updated to address a potential conflict that affected engine speed control functionality.
Revised Field Service Campaign for Western Star Heated Headlight Parameters.
Read full bulletin
SECOND REVISION: The parameter set was updated to address a potential conflict that affected engine speed control functionality.
Service Solution for DEF Pump Wiring for Cummins CM2450 Engine Controller
Service Solution for DEF Pump Wiring for Cummins CM2450 Engine Controller
Revised Freightliner and Western Star Field Service Campaign for Freightliner and Western Star Trucks with Cummins...
Read full bulletin
Engines, Cruise Control Indicator Light
Revised Field Service Campaign for Freightliner & Western Star Trucks with Cummins Engines - Cruise Control Indicator...
Read full bulletin
Light
Field Service Campaign for Freightliner and Western Star Trucks w Cummins Engines - Cruise Control Indicator Light
Field Service Campaign for Western Star 49X Front Crossmember.
Read full bulletin
A loss of clamp load, in the aft connection of the engine crossmember and frame rail, could result in a frame rail crack.
Service Solution for Aero Height Control Interfering with RDF Alignment.
Read full bulletin
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.
Field Service Campaign for Western Star 49X Transmission Cooler Plumbing.
Read full bulletin
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.
Service Solution for Cummins PTO functionality error software level 81Z-006.
Read full bulletin
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.
Service Solution for Aero Height Control Interfering with RDF Alignment and 42/523004/13 and 232/524042/9 Active for...
Read full bulletin
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.
Other
27 bulletinsTruck Equipment Manufacturer Solution for RSS with PTO Engagement
CX Advocate for discolored coolant surge tanks (24CSA-20)
CX Advocate for Questions/Issues Raised
CX Advocate for technical questions/issues raised
CX Advocate for ConMet Oil Pan Insert Additional Issues
CX Advocate for technical questions/issues raised
My Communications for UFI 0-Ring Announcement
CX Advocate for technical questions/issues raised
CX Advocate for SAS01T to SAS03T replacement (TSB54-373-FTL, TSB54-097-WST)
CX Advocate for NOx conversion low faults
CX Advocate for NOx conversion low faults
CX Advocate for NOx conversion low faults
CX Advocate for GATS2.4 being expanding to DD15
CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the...
Read full bulletin
Clean Truck Check.
CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the...
Read full bulletin
Clean Truck Check.
CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the...
Read full bulletin
Clean Truck Check.
CX Advocate for WST x-series unintended wiper sweep (TSB82-003-WST)
CX Advocate for CTP2 Shortage Recovery Cummins Only (SF685)
CX Advocate for ConMet Oil Pan Insert Additional Failures
CX Advocate for benefits of Autoelevate and hydrocarbon faults
CX Advocate for CTP2 Shortage Recovery Cummins Only (SF685)
CX Advocate for ConMet Oil Pan Insert Additional Failures
CX Advocate communication for oil lines disconnecting
CX Advocate communication for NOx conversion low faults
Customer letter regarding variable speed water pump.
Customer Advisory Letter for Western Star 49X Adaptive Cruise Control
Western Star Tough Talk episode 3 now available.
Software & Calibration
19 bulletinsMy communications for DTNA Announces Extended Coverage Policy Updates
CX Advocate for NOx conversion low faults.
Read full bulletin
Update to CXA 6_24_NOx submission.
"Revised Technical Service Bulletin for Off-Road/Low Traction Throttle Parameter Update.
Read full bulletin
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."
Technical Service Bulletin for Off-Road/Low Traction Throttle Parameter Update
Revised Field Service Campaign for Common Telematics Platform Software Update
Important Campaign Information Letter for SF675 - Revised Work Instructions.
Read full bulletin
This letter is to inform you that Table 3, Step 22 (page 61) has been updated, along with the Notes throughout the sub-steps of Step 22.
Revised Field Service Campaign for Bendix SDP5 Software Update
Revised Field Service Campaign for Bendix SDP5 Software Update
Field Service Campaign for Common Telematics Platform Software Update
Field Service Campaign for Bendix SDP5 Software Update
My Communications for SF625 and SF657 Pre-Flashed USB Tools.
Read full bulletin
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.
Field Service Campaign for Freightliner and Western Star CTP Software Update
Revised Western Star Field Service Campaign for Western Star 49X - XMC Software Update
DetroitConnect follow-up customer communication for certain vehicles unable to complete over the air updates including...
Read full bulletin
parameters and DDEC over the air.
DetroitConnect customer communication for certain vehicles unable to complete over the air updates including parameters...
Read full bulletin
and DDEC over the air.
My Communication for Detroit Connect Over the Air Issue Update.
Read full bulletin
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.
Service Solution for XMC Output Reliability.
Read full bulletin
Reliability issue with the six 20 Amp outputs (DO1-DO6) on the XMCs. A software revision is now available to allow 20 Amp outputs work reliably on XMCs for 49X.
Field Service Campaign for Western Star 49X Differential Lock - Parameter Update.
Read full bulletin
Vehicles may automatically disengage the differential lock without warning when vehicle speed reaches 25 mph.
Freightliner and Western Star Production Schedule Update Freightliner Cascadia & Western Star 4700, 49X and 5700XE...
Read full bulletin
Production Schedule Update We recently communicated to our Freightliner Trucks dealer distribution network the rolling production delays for medium-duty truck models built at our Mount Holly and Santiago Truck Manufacturing Plants(TMP). The effects of the COVID-19 pandemic continue to impact global semiconductor supply chains and the prolonged duration of these shortages have reached our heavy-duty truck supply chain as well.
Fuel System
15 bulletinsParts Bulletin for Fluorosilicone Fuel Tank Cap Seals
Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming
Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming
Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming
Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair Time Updates
CX Advocate for HDEP High Pressure Fuel Line Seal Failures
Fuel Injector Cleaner Updated Procedure
Fuel Injection Cleaning Machine Priming Procedures
Draft Fuel Injection Cleaning Machine (FICM) Setup Instructions
Field Service Campaign for Drilled Exhaust Rocker Arm Installation
Field Service Campaign for Drilled Exhaust Rocker Arm Installation
Field Service Campaign for Drilled Exhaust Rocker Arm Installation
Emission recall for Freightliner Cascadia and Western Star 49X Exhaust Support Bracket
Important Campaign Information Letter for DDC D21M7 Termination Date Extended.
Read full bulletin
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.
Service Solution for fuel level sending unit loose.
Transmission
13 bulletinsDetroit Transmissions Manual Update for Symptom Diagnostics DT12 C/D Box Range Shift to Neutral with Reversing Events...
Read full bulletin
(Aborts)
Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
Technical Service Bulletin for Transmission shift stalk
CX Advocate for Aftermarket Transmission Support
Service Solution for 47X/49X Dual Power Steering Gear Orifice Fittings
Technical Service Bulletin for DT12 OVX Transmission Refresh
CX Advocate communication for clutch bolts
Field Service Campaign for Western Star 47X and 49X Maintenance System Update.
Read full bulletin
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).
Western Star Service Bulletin for Resetting the Maintenance System for DT12 Oil Changes.
Read full bulletin
This service bulletin describes required maintenance system parameter changes that apply to New Cascadia vehicles with Detroit DT12 transmissions used for line haul applications.
Important Campaign Information Letter for DDC D21M1 Termination Date Extended.
Read full bulletin
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.
Transmission Cooler Line Plumbing Fitting.
Read full bulletin
Transmission cooler line plumbing fitting connections at the radiator may have relative movement between rail and radiator allowing fittings to become loose and leak.
Detroit Field Service Campaign for GHG21 Detroit DD16 CPC Software Reprogramming.
Read full bulletin
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.
Service Solution for Transmission Cooler Line Plumbing Fitting.
Read full bulletin
Transmission cooler line plumbing fitting connections at the radiator may have relative movement between rail and radiator allowing fittings to become loose and leak.
Lighting
13 bulletinsRevised Field Service Campaign for Western Star Heated Headlight Parameters
Revised Field Service Campaign for Western Star Heated Headlight Parameters
Revised Field Service Campaign for Western Star Heated Headlight Parameters.
Read full bulletin
REVISION: Clarifying statements and a figure were added to the work instructions between steps 8 and 9 regarding grayed out XMC parameters.
Revised Field Service Campaign for Western Star Heated Headlight Parameters.
Read full bulletin
REVISION: Clarifying statements and a figure were added to the work instructions between steps 8 and 9 regarding grayed out XMC parameters.
Field Service Campaign for Western Star Heated Headlight Parameters
Field Service Campaign for Western Star Heated Headlight Parameters
Field Service Campaign for Western Star Heated Headlight Parameters
Service Solution for 47X & 49X Headlamp Marker Light Strobing or Flickering
Western Star Service Bulletin for Non-Functioning Heated Headlamps.
Read full bulletin
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.
Service Solution for 49X & 47X Non FunctioningHeated Headlamps.
Read full bulletin
Heating function of heated headlamps not functioning possible allowing snow and moisture toaccumulate on lens.
Revised Detroit Technical Service Letter for Gen 5 Detroit DD16 Poor Acceleration Complaints In Western Star 49X Chassis When Lightly Loaded.
Read full bulletin
This letter has been removed as more current information is now available in the campaign letter D21M7.
Revised Technical Service Letter for GHG21 Detroit DD16 Poor Acceleration Complaints In Western Star 49X Chassis When...
Read full bulletin
Lightly Loaded.
Technical Service Letter for GHG21 Detroit DD16 Poor Acceleration Complaints In Western Star 49X Chassis When Lightly...
Read full bulletin
Loaded.
Body & Paint
12 bulletinsParts Bulletin for Bumper and Rock Guard Part Numbers
Fleet Communications for Corrosion Protecton/Glyptal Application
Revised Service Solution for Western Star vehicles with excessive water intrusion into the air system
Service Solution for Western Star vehicles with excessive water intrusion into the air system
Service Solution for Tire Pressure Monitoring System (TPMS) Water Intrusion Through Perimeter Seal
Service Solution for X-series Bodybuilder Marker Lights Turn Off While Truck Lights Remain On
Updated Western Star Service Bulletin for Tire Pressure Monitoring System (TPMS) Water Intrusion.
Read full bulletin
This bulletin replaces the version dated 08/17/2022. Information about the protective boot has been updated.
Western Star Service Bulletin for Tire Pressure Monitoring System (TPMS) Water Intrusion
Service Solution for Primary Mirror Shaking and Vibration
Service Solution for 49X Hood Handle Mounting
Service Solution for Door Drain Plug & Water Pooling.
Portland Truck Plant Paint Update - WST182 The Portland Truck Plant schedule is full through the end of 2021 for...
Read full bulletin
Western Star 4700, 4800, 4900, and 6900 models; the plant has also reached the maximum paint process capacity for multi-color and custom paint designs. Due to the capacity constraint, the Western Star CAE team will no longer accept Truck Change Orders requesting changes from a single color paint to a multi-color paint or custom paint design for vehicles building at the Portland Truck Plant through the end of 2021.
Brakes
11 bulletinsCX Advocate for 1810/02 ABS longitudinal acceleration fault (TSB-54-104-WST,TSB-54-379-FTL)
CX Advocate for unwanted park brake warning (TSB-54-098-WST)
Technical Service Bulletin for Disabling the Park Brake Set / Door Open Warning
Customer Advisory Letter for ABS MBSP Controller Parameter Update for Enhanced Stability Control.
Western Star Service Bulletin for ABS mBSP ECU Software Update Fault Code 629-11.
Read full bulletin
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.
Notice for certain vehicles: Due to the way in which this vehicle was configured, the vehicle does not display the...
Read full bulletin
Cruise Control telltale on the instrument cluster when the Cruise Control system is turned On. All other Cruise Control functionality works as intended, including the drivers ability to disable Cruise Control by engaging the brakes.
Revised Field Service Campaign for Cascadia, 49X ABS MBSP+ Controller Software Update
Revised Field Service Campaign for Cascadia/49X ABS MBSP+ Controller Software Update.
Read full bulletin
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.
Important Campaign Information Letter for SF622 Campaign Revision/Reactivation.
Read full bulletin
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.
Storage Console Shortage.
Read full bulletin
Freightliner and Western Star orders with the following option may experience a temporary delay in availability of the storage console mounted on the interior backwall of Daycabs.
Field Service Campaign for Cascadia/49X ABS MBSP+ Controller Software Update.
Read full bulletin
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.
Steering
7 bulletinsCX Advocate for Cummins X15 Power Steering Pump Plumbing
Technical Service Bulletin for Cummins X15 Power Steering Pump Plumbing
Warranty Information letter for Power Steering Tank Venting Diagnostic Procedures Revision
Parts Bulletin for Tie Rod Assembly Part Breakdown
Service Solution for ICC5 Erroneous Electric Power Steering Warning Message
Service Solution for Power Steering Reservoir Fill Cap Venting
Service Solution for Power Steering Cap Contact withHood Strap.
Read full bulletin
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.
Suspension
6 bulletinsCX Advocate for X-Series HD Front Suspension Threaded
CX Advocate for Twin Steer Equalizer Beam Bushing Wear
CX Advocate for Twin Steer Equalizer Beam Bushing Wear
Service Solution for 47X/49X Front Suspension AluminumShackle Bars
Field Service Campaign for Western Star 49X Airliner Rear Suspension
Field Service Campaign for Western Star 47X and 49X SBA Front Suspension Shackle Bolts.
Read full bulletin
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.
Infotainment
5 bulletinsService Solution for ICC5 B-Panel Gauges Intermittently Not Being Displayed
Service Bulletin for Relocating the Bluetooth Microphone
Important Campaign Information Letter for SF657 Revised Bulletin.
Read full 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.
Service Solution for Mirror Mounted Antenna Ground.
Read full bulletin
CB radio and or AM/FM radio difficult to hear incoming audible, cuts out.
ECP (Electronic Controlled Pneumatics) Ground Noise/False Codes.
Read full bulletin
Internal board of ECP supplied by manufacturer. Audible chirping noise through speakers, leaking air through ECP, continual error codes with no problem found.
HVAC & Climate
3 bulletinsFleet Communications for Heater Core Plugging
Revised Service Bulletin for HVAC Software Updates.
Read full bulletin
Description of Revisions: This bulletin replaces the version dated 06/21/2022. The model applicability list and the general information have been updated.
Western Star Service Bulletin for HVAC Software Updates
Tires & Wheels
2 bulletinsService Solution for ECP Solenoid Interim Service Replacement Parts
Service Solution for 49X and 47X Web Mounted 5th Wheel Ramps