Ford Recalls 4,380,609 Vehicles for Trailer Signal Software Flaw

Ford Motor Company has issued a massive recall affecting 4,380,609 vehicles in the United States due to a software issue that could disable trailer brake lights and turn signals. The action, announced this week, involves popular pickup trucks and SUVs from model years 2021 to 2026, highlighting ongoing safety concerns for the automaker's towing capabilities.

The recall targets the integrated trailer module, a component that manages trailer functions. According to the National Highway Traffic Safety Administration, a software vulnerability can trigger a race condition, where the module loses communication with the vehicle's systems at startup. This failure prevents trailers from signaling turns or braking properly, violating federal motor vehicle safety standards and increasing the risk of rear-end collisions. Owners may notice a warning message on the instrument cluster, such as "Trailer Brake Module Fault" or "Blind Spot Assist System Fault."

Affected models include the 2021-2026 F-150, with 2,297,857 units; the 2022-2026 F-250, with 1,135,063 units; the 2022-2026 Maverick, with 412,105 units; the 2022-2026 Expedition, with 317,604 units; the 2024-2026 Ranger, with 129,836...