Western Star 57X, 47X +1 more: Lights and Instruments

Affects Western Star 57X, 47X, 49X · 2022–2025 — about 451 vehicles.

The hazard

Issue: On certain trucks, a software problem could cause the brake lights not to work when the brakes are automatically applied during emergency braking. Safety Risk: Brake lights that don't work could cause others not to recognize when a vehicle is braking. This could increase the risk of a crash. Corrective Actions: Daimler Truck North America (DTNA) will notify owners by mail and advise you to take your truck to a DTNA authorized service facility to update the active brake assist (ABA) software.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational