Service bulletins for the 2022 Western Star 4700
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
33 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with type: Service bulletin are shown. Show all
| PB-47-900-WST | 2026-07-06. Service bulletin. FUEL/PROPULSION SYSTEM. Parts Bulletin for Fluorosilicone Fuel Tank Cap Seals |
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| TSB35-023-WST | 2024-06-05. Service bulletin. POWER TRAIN. Technical Service Bulletin for New Final Drive Over Heat Diagnostic |
| SS3144-FTL | 2024-05-07. Service bulletin. ENGINE AND ENGINE COOLING. Service Solution for DEF Pump Wiring for Cummins CM2450 Engine Controller |
| ICI24-006 | 2024-03-06. Service bulletin. ENGINE AND ENGINE COOLING. Important Campaign Information letter for FL974 - Revised Bulletin & Population |
| FL974 | 2024-03-06. Service bulletin. ENGINE AND ENGINE COOLING. 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. |
| FL974 | 2024-02-06. Service bulletin. ENGINE AND ENGINE COOLING. Emissions Recall: Cummins DEF Sensor Shortage |
| SF668 | 2023-06-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Field Service Campaign for ICU4Me Cluster Assembly Liquid Crystal Display. |
| SBW49-020 | 2022-03-03. Service bulletin. ENGINE AND ENGINE COOLING. Western Star Service Bulletin for DEF Connector Reinforcement Caps |
| CALWS91-002 | 2022-03-03. Service bulletin. SEAT BELTS. Customer Avisory Letter for Seat Bolt Inspection |
| MYCOM_032521-1 | 2021-08-30. Service bulletin. UNKNOWN OR OTHER. Freightliner and Western Star Production Schedule Update Freightliner Cascadia & Western Star 4700, 49X and 5700XE 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. |
| PTP PAINT UPDT | 2021-08-27. Service bulletin. UNKNOWN OR OTHER. Portland Truck Plant Paint Update - WST182 The Portland Truck Plant schedule is full through the end of 2021 for 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. |
| SF631 | 2021-07-22. Service bulletin. ENGINE AND ENGINE COOLING. Field Service Campaign for Detroit Diesel Engine Fan Activation with A/C. On certain Freightliner and Western Star vehicles with Detroit Diesel engines, the engine fan fails to activate when the A/C pressure switch circuit is opened, resulting in poor A/C cooling performance at idle. |
| SBW54-080 | 2021-06-29. Service bulletin. ELECTRICAL SYSTEM. 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. |
| PM Sensor Shrtg | 2021-06-19. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Supply chain shortage notice. Model Year 2022 Freightliner, Western Star, Freightliner Custom Chassis, and Thomas Built Bus vehicles manufactured with the following engines have been built without a Particulate Matter (PM)/Soot sensor: •DD15 Gen 5 (Gats 2.0) (with a June 2021 or later GHG build date) •DD13 Gen4 (1-box) (with a June 2021 or later GHG build date) •Cummins B6.7 (with a June 2021 or later GHG build date) •Cummins X15 with ratings of 400-500HP (with a June 2021 or later GHG build date) As a result, the vehicle has a non-conforming On-Board Diagnostic (OBD) system. The engine manufacturers will pay to install the OBD PM sensor and corresponding software through a recall once sensors become available. |
| SS1033094 | 2021-06-09. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:MANIFOLD PRESSURE (MAP) SENSOR. Service Solution SS 1033094 KUS Float Tube Fuel Level Sensor Inform... |
| TSN 88-07 | 2021-05-17. Service bulletin. VISIBILITY. Western Star 4700 non removable bug screen with additional coverage to the bumper - TSN |
| SBW98003 | 2021-05-10. Service bulletin. STRUCTURE:BODY. Paint Peeling, Hood. |
| SS701-WST2021 | 2021-05-01. Service bulletin. POWER TRAIN. Service Solution for DT12 Harness Chaffing - PT Can Faults. Transmission will not shift into Gear while driving or will not start and trigger multiple PT CAN Fault Codes. |
| WI21-009 | 2021-04-24. Service bulletin. ENGINE AND ENGINE COOLING. 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 | 2021-04-23. Service bulletin. EQUIPMENT. 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. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.