Daimler Truck North America is recalling 2,404 Freightliner Cascadia and Western Star 49X trucks because some vehicles repaired under two previous recalls received an incompatible software remedy instead of the required replacement brake components.

The original recalls addressed front-axle brake modulator valves that may corrode. If corrosion affects a valve’s operation, full braking pressure could be applied to one front wheel during braking initiated by the electronic stability control or roll stability control system. The resulting difference in braking force could cause the truck to pull suddenly to one side, increasing the risk of a crash.

The vehicles were previously repaired under DTNA recalls FL958 and FL966, corresponding to National Highway Traffic Safety Administration recalls 22V817 and 23V073.

Software installed under the previous recalls was intended to warn drivers about corrosion in the valves. While that remedy works with other chassis configurations, DTNA determined it is incompatible with the affected 4x2 trucks and may not detect the problem.

The recall covers 2,402 model-year 2020-2023 Freightliner Cascadias and two model-year 2022 Western Star 49X trucks. All have 4x2 axle configurations.

The Cascadia population includes both diesel- and natural-gas-powered trucks, although the powertrain breakdown in DTNA’s NHTSA filing appears to contain conflicting figures.

Next Steps in Recall

Normal service braking is not affected. Drivers may see an ABS malfunction warning light before corrosion completely compromises the modulator valve.

DTNA discovered the issue during an internal process review in late August 2026 and decided on September 8 to conduct a new recall.

The company said it has received no reports of unexpected brake pulls, crashes, injuries, or fatalities involving the affected vehicles.

Dealers will replace the brake modulator valves free of charge. Trucks repaired under the earlier recalls will need to return for the new hardware repair.

Owner notification letters are expected to be mailed Nov. 8, 2026. Owners may contact DTNA customer service at 800-547-0712. DTNA’s number for the new recall is F1039.

Owners also may contact NHTSA’s Vehicle Safety Hotline at 888-327-4236 or visit NHTSA.gov.