CXA 08_26_Equalizer Beam
Other
CX Advocate for Twin Steer Equalizer Beam Bushing Wear
Vehicle report
2025 WESTERN STAR 49X
Service bulletins
190 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
WI26-009R
Other
Revised Warranty Information letter for missing chamber caging bolts
TS-0013-00
Other
Truck Equipment Manufacturer Solution for PTO Mode Delay for Driving PTO
CXA 07_25_F1011,F1015 Lbl
Other
CX Advocate for Lost/Damaged Replacement F1011/F1015 Labels
TSB-54-375-FTL
Service Bulletin/Repair Instructions
Revised Technical Service Bulletin for Removing Odometer Pause Wiring Modifications
WI26-009
Other
Warranty Information letter for missing chamber caging bolts
CXA 06_26_Hood
Other
CX Advocate for Hood Cracks
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
WI26-008
Other
Warranty Information letter for Reman Parts Usage Policy Reminder
TS-0008-00
Other
Truck Equipment Manufacturer Solution for RSS with PTO Engagement
CXA 03_26_ABS LA Fault
Other
CX Advocate for 1810/02 ABS longitudinal acceleration fault (TSB-54-104-WST,TSB-54-379-FTL)
CXA 03_26_SSR
Other
CX Advocate for error generates when SSR is moved into an engine brake position 1,2,3 (TSB-26-058-FTL, TSB-26-009-WST)
CXA 03_26_Surge Tank
Other
CX Advocate for discolored coolant surge tanks (24CSA-20)
TSB-54-104-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for ESC warning lamp and ECU replacement
TitanX Extension
Warranty Program/Extension
Standard Warranty Extension for vehicles with TitanX Radiators
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
TSB-26-009-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for Transmission shift stalk
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
FleetCom_TCM Clutch
Other
Fleet Communications for TCM Fault 520970/7 – Clutch Unable to Open Fully
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_AMTcc DTC
Other
CX Advocate for New AMTcc - DTC 520970/7: Clutch Unable to Open Sufficiently
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_Chassis Lean
Other
Fleet Communications for Trucks arriving at dealers and body builders with chassis leans greater than 3/8 of an inch
FleetCom_Clutch
Other
Fleet Communications for New AMTcc - DTC 520970/7: Clutch Unable to Open Sufficiently
FleetCom_Low Coolant
Other
Fleet Communications for Low Coolant Sensor
F1015-Bulletin
Emissions
Revised Emissions Recall for VECI Label Emissions Recall
F1015-DLR LTR
Emissions
Revised Emissions Recall for VECI Label Emissions Recall
ICI25-026
Other
Important Campaign Information for F1011 & F1015 Campaigns Revised
SS3162-FTL
Other
Service Solution for M2 Plus, 108,114SD Plus and New Cascadia Vehicles, SSL and SSR Non-Functional
SS775-WST
Other
Service Solution for X-Series Western Star Vehicles, SSL and SSR Non-Functional
TSB-32-020-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for TufTrac M12 Bolts
CXA 10_25_Discolored Cool
Other
CX Advocate for Plastic Opaque Surge Tank Staining
CXA_10_25_Chassis Lean
Other
CX Advocate for Trucks arriving at dealers and body builders with chassis leans greater than 3/8 of an inch
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
ICI23-018R5
Other
Important Campaign Information letter for (Revised) Love’s Travel Stops Authorized Campaign Program
CXA_9_25_SF715
Other
CX Advocate for SF715 Stalk Switch Left and Right Inoperative
CXA_9_25_Tech Questions
Other
CX Advocate for technical questions/issues raised
WI25-014
Other
Warranty Information letter for Power Steering Tank Venting Diagnostic Procedures Revision
MYCOM_09092025-1
Other
My communications for DTNA Announces Extended Coverage Policy Updates
MYCOM_09022025-1
Other
My Communications for UFI 0-Ring Announcement
TSB-26-001-DDC
Other
Technical Service Bulletin for DT12 Range Detent Diagnostic
SF715-Bulletin
Service Campaign
Field Service campaign for stalk switches
SF715-DLR LTR
Service Campaign
Field Service campaign for stalk switches
SF715-OWN LTR
Service Campaign
Field Service campaign for stalk switches
ICI25-021
Other
Important Campaign Information letter for F1015 Campaign Revised
CXA_8_25_TCM CAN
Other
CX Advocate for DT12 - TCM CAN communication issues with CPC
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
F1015-OWN LTR
Emissions
Emissions Recall for VECI Label Emissions Recall
24CSA-19Rev
Other
Revised Customer Service Annoucement for No Trouble Found Heavy Duty Engine Product (HDEP) Oil Separator Leaks
ICI21-016
Other
Revised Important Campaign Information letter for (Revised) CPWA Recall Program
TSB83-032-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for HVAC Stops Cooling
CXA 7_25_DEF Regen
Other
CX Advocate for DEF Regen Inhibit Dash Switch Indicator (SF716)
CXA 7_25_Mirror DTC
Other
CX Advocate for Nuisance Mirror Adjustment DTC (SS785-WST)
CXA 7_25_Trans Cooler
Other
CX Advocate for Transmission Cooler Line Rub with Recirc Baffle (SF718)
SS785-WST
Other
Service Solution for Nuisance Mirror Adjustment DTC
TSB54-099-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for Hood Headlight Wiring Too Short
PB33-005-WST
Service Bulletin/Repair Instructions
Parts Bulletin for Tie Rod Assembly Part Breakdown
SF718-Bulletin
Service Campaign
Field Service Campaign for Transmission Oil Cooler Line Clearance
SF718-DLR LTR
Service Campaign
Field Service Campaign for Transmission Oil Cooler Line Clearance
SF718-OWN LTR
Service Campaign
Field Service Campaign for Transmission Oil Cooler Line Clearance
SF716-Bulletin
Service Campaign
Field Service Campaign for DEF Regen Inhibit Dash Switch Indicator
SF716-DLR LTR
Service Campaign
Field Service Campaign for DEF Regen Inhibit Dash Switch Indicator
SF716-OWN LTR
Service Campaign
Field Service Campaign for DEF Regen Inhibit Dash Switch Indicator
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
MYCOM_03272025-1
Other
My Communications for Detroit Assurance – Adaptive Cruise Control for Cummins Update
F1014-Bulletin
Emissions
Emission recall for Western Star DEF Header
F1014-DLR LTR
Emissions
Emission recall for Western Star DEF Header
F1014-OWN LTR
Emissions
Emission recall for Western Star DEF Header
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)
CXA 3_25_Wheel Seals
Other
CX Advocate for wheel seals
SS782-WST
Other
Service Solution for ICC5 B-Panel Gauges Intermittently Not Being Displayed
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_DT12 TCM Param
Other
CX Advocate for DT12 Delayed Acceleration TCM Parameter Issue
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
CXA 2_25_Wired Regen
Other
CX Advocate for Cummins Engine with Wired Regen Inhibit Switch (SF703)
SS780-WST
Other
Service Solution for Tire Pressure Monitoring System (TPMS) Water Intrusion Through Perimeter Seal
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
SS779-WST
Other
Service Solution for X-Series With DT12 Transmission Sluggish Throttle Response or Delayed Shift
TSB01-001-DDC
Service Bulletin/Repair Instructions
Technical Service Bulletin for GHG17 and Newer DD Platform Heavy Duty Oil Pan Drain Plug Inserts
TSB01-002-DDC
Service Bulletin/Repair Instructions
Technical Service Bulletin for Gen 5 DD13 Turbocharger Oil Return Line Cracks
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
D24M5-Bulletin
Service Campaign
Detroit Field Service campaign for 2024 HDEP ACM Software Reprogramming.
D24M5-DLR LTR
Service Campaign
Detroit Field Service campaign for 2024 HDEP ACM Software Reprogramming.
D24M5-OWN LTR
Service Campaign
Detroit Field Service campaign for 2024 HDEP ACM Software Reprogramming.
TSB91-004-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for Repairing Seat Occupancy Sensor for ISRI, SEARS and National Truck Seats
SF705-Bulletin
Service Campaign
Revised Field Service Campaign for Espar Fuel Standpipe Weld
SF705-DLR LTR
Service Campaign
Revised Field Service Campaign for Espar Fuel Standpipe Weld
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_Cummins X15 Fuel
Other
CX Advocate for Cummins X15 Fuel Pump Cracks (F1010)
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_Espar Fuel
Other
CX Advocate for Espar Fuel Standpipe Weld (SF705)
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
SF705-OWN LTR
Service Campaign
Field Service Campaign for Espar Fuel Standpipe Weld
SS771-WST
Other
Service Solution for 47X/49X Front Suspension AluminumShackle Bars
Detroit FAB 327
Other
Updated Detroit Ferightliner Action Bulletin for Detroit Connect Safety Plus
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.
CXA 11_21_Discolored Cool
Other
CX Advocate for discolored coolant surge tank
CXA 11_21_HDEP Changes
Other
CX Advocate for HDEP Running Change
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
SF703-Bulletin
Service Campaign
Field Service Campaign for Cummins Engine with Wired Regen Inhibit Switch
SF703-DLR LTR
Service Campaign
Field Service Campaign for Cummins Engine with Wired Regen Inhibit Switch
SF703-OWN LTR
Service Campaign
Field Service Campaign for Cummins Engine with Wired Regen Inhibit Switch
CXA 10_17_HDEP Changes
Other
CX Advocate for HDEP Running Change
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_CSA letters
Other
CX Advocate for the following CSA: (24CSA-17,24CSA-19,24CSA-20) Gen 5 DD13 Turbocharger Oil Return Line Cracks, Heavy-Duty Engine Product (HDEP) Oil Separator Leaks, Discolored Coolant Surge Tank on Heavy Duty Engine Product (HDEP)
CXA_10_17_Exhaust elbow
Other
CX Advocate for WST Trucks built with wrong exhaust elbow (SF702)
24CSA-19
Other
Customer Service Annoucement for Heavy-Duty Engine Product (HDEP) Oil Separator Leaks
24CSA-20
Service Bulletin/Repair Instructions
Customer Service Annoucement for Discolored Coolant Surge Tank on Heavy Duty Engine Product (HDEP)
MYCOM_10042024-1
Other
My Communications for OnGuard Discontinuation on all Daimler Truck products
SS757-WST
Other
Service Solution for 47X & 49X Shifter Interference with Arm Rest
SS1023366-Detroit
Other
Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
SF702-Bulletin
Service Campaign
Field Service Campaign for Chrome Exhaust Elbows
SF702-DLR LTR
Service Campaign
Field Service Campaign for Chrome Exhaust Elbows
SF702-OWN LTR
Service Campaign
Field Service Campaign for Chrome Exhaust Elbows
WP24-017
Warranty Program/Extension
Warranty Policy Letter for Steering Wheel Centering Policy Amendment
24CSA-17
Service Bulletin/Repair Instructions
Detroit Customer Service Annoucement for Gen 5 DD13 Turbocharger Oil Return Line Cracks
CXA 9_24_HDEP Changes
Other
CX Advocate for HDEP Running Change
CXA 9_24_HDEP HPFL Seal
Other
CX Advocate for HDEP High Pressure Fuel Line Seal Failures
24CSA-16
Service Bulletin/Repair Instructions
Detroit Customer Service Annoucement for Gen 5 DD15 Cylinder Head Cup Plug Replacement
D24R5-Bulletin
Emissions
Detroit Emissions Recall Campaign for DD13 CARB 24 ACM Software Reprogramming
D24R5-DLR LTR
Emissions
Detroit Emissions Recall Campaign for DD13 CARB 24 ACM Software Reprogramming
D24R5-OWN LTR
Emissions
Detroit Emissions Recall Campaign for DD13 CARB 24 ACM Software Reprogramming
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_HDEP Changes
Other
CX Advocate for HDEP Running Change
CXA 8_24_WABCO_Onguard
Other
CX Advocate for Wabco Onguard (TSB54-364-FTL, TSB54-094-WST)
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.
FICM Cleaning
Other
Cleaning Gen5 Engine Fuel Injectors
FICM Email
Other
Fuel Injector Cleaner Updated Procedure
FICM Priming
Other
Fuel Injection Cleaning Machine Priming Procedures
FICM Setup
Other
Draft Fuel Injection Cleaning Machine (FICM) Setup Instructions
TSB54-094-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for Wabco OnGuard Display Discrepancy
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_NOx
Other
CX Advocate for NOx conversion low faults. Update to CXA 6_24_NOx submission.
MYCOM_07182024-1
Other
My Communications for DTNA Tire Communication Update - 2024
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
CXA 06_24_Oil Lines
Other
CX Advocate communication for oil lines disconnecting
MYCOM_06142024-2
Other
My Communications for ICUC Programming Update
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.
MYCOM_06052024-1
Other
My Communications for Diagnosticlink ICUC Programming Error
TSB35-023-WST
Service Bulletin/Repair Instructions
Technical Service Bulletin for New Final Drive Over Heat Diagnostic
SF698-Bulletin
Service Campaign
Field Service Campaign for Western Star Heated Headlight Parameters
SF698-DLR LTR
Service Campaign
Field Service Campaign for Western Star Heated Headlight Parameters
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
Reading this report
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.