Western Star · Canada · Mod
Western Star 49X, 47X: Brakes
Affects Western Star 49X, 47X · 2017–2023 — about 7K vehicles.
The hazard
Issue: On certain trucks, the brake modulator valves could corrode. As a result, the brakes on one wheel could fully apply during an adaptive cruise control braking event. If this happens, there could be a brake pull that can cause the truck to change direction. Note: This problem does not affect the regular service brakes. Safety Risk: A brake pull that causes the vehicle to change direction suddenly can increase the risk of crash. Corrective Actions: Daimler Truck North America (DTNA) will notify owners by mail and instruct you to take your truck to a DTNA authorized service facility to inspect, and if necessary, replace the brake modulator valves.
What to do
Contact your dealer; the remedy details were not included in the filing.