2023 Western Star 4900 problems, complaints & recalls
Safety recalls (4)
Parking Brake 2024-01-10 · campaign 24V013000 · 149 vehicles
Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2023 Western Star 4900 and Western Star 6900 vehicles. A defect in the inversion valve may delay park brake engagement, which could allow the vehicle to move unintentionally. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Risk: Unintentional vehicle movement can increase the risk of a crash or injury.
Fix: DTNA will inspect and replace the inversion valves, as necessary free of charge. Owner notification letters were mailed February 27, 2024. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL992.
Steering:linkages:tie Rod Assembly 2023-04-04 · campaign 23V238000 · 306 vehicles
Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2022 FCCC Shuttle Chassis, 2022-2023 FCCC RV Chassis, FCCC Van Chassis, Van Chassis Gas, 2023 Freightliner Cascadia, Freightliner Business Class M2, Thomas Built Bus School Bus Chassis, Western Star 4700, Western Star 47X, Western Star 4900, and Western Star 49X commercial buses. The tie rod may be missing a fastener, allowing the steer arm to detach.
Risk: A detached steering arm can result in a sudden loss of steering control, increasing the risk of a crash.
Fix: DTNA will inspect and repair or replace the tie rod assembly as necessary, free of charge. Owner notification letters were mailed August 11, 2023. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL970.
Steering:linkages:tie Rod Assembly 2022-09-28 · campaign 22V722000 · 36 vehicles
Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2022-2023 Western Star 4700 and 2023 Western Star 4900, 49X, 6900, and Freightliner 114SD vehicles. The tie rod clamps may have been improperly heat-treated, causing them to crack and allowing the tie rods to separate.
Risk: Tie rod separation can result in a sudden loss of steering, increasing the risk of a crash.
Fix: Dealers will replace the tie rod clamps, free of charge. Owner notification letters were mailed Marc 15, 2023. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL955.
Service Brakes, Air:supply:hoses, Lines/Piping, And Fittings 2022-03-30 · campaign 22V205000 · 13 vehicles
Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2023 Western Star 4900 trucks. The inversion valve air lines may have been incorrectly installed, potentially reducing brake performance.
Risk: Reduced brake performance increases the risk of a crash.
Fix: All vehicles have been remedied, therefore no owner notification letters are necessary. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-924.
Service bulletins (35)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Fuel/Propulsion System 2026-06-01 · PB-47-900-WST · Service Bulletin/Repair Instructions
parts bulletin for fluorosilicone fuel tank cap seals
Engine 2025-10-16 · CXA_10_25_Conmet Oil Pan · Other
cx advocate for conmet oil pan insert additional issues
Engine 2025-03-20 · CXA 3_25_NOx · Other
cx advocate for nox conversion low faults
Engine 2025-02-20 · CXA 2_25_NOx · Other
cx advocate for nox conversion low faults
Engine 2025-01-16 · CXA 1_16_NOx · Other
cx advocate for nox conversion low faults
Engine 2024-12-03 · D24R2-OWN LTR · Emissions
emission recall for detroit dd13 and dd16 acm software reprogramming
Showing the 6 most recent of 35 bulletins. Search all of them free at nhtsa.gov.
What owners report
No detailed complaint narratives on file.
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.