Ford recalls 4.3 million vehicles due to trailer module software glitch

Ford has announced a massive recall of 4.3 million vehicles in the U.S. due to a software bug affecting the Integrated Trailer Module, which handles communication between the vehicle and trailer. According to the automaker, the glitch can disrupt this connection, potentially causing trailer brake failure or disabling turn signals and brake lights. The issue most commonly occurs when starting the vehicle.

The recall covers 2021–2026 models, including the F-150, F-250 Super Duty, Maverick, Expedition, Lincoln Navigator, and some versions of the Ranger and E-Transit. Ford has recorded 407 incidents potentially linked to the defect. However, the company emphasizes that no accidents directly tied to the error have been reported.

NHTSA points out that losing trailer brakes or exterior lighting while towing increases the risk of losing control, especially under heavy loads or at higher speeds. After discussing the problem with regulators in December, Ford reopened its investigation in January and confirmed the need for an official recall.

Ford will fix the defect remotely via an over-the-air software update, allowing owners to resolve the issue without visiting a dealership. This approach highlights a shift in automakers' strategies, where software glitches are now playing as critical a role in safety as mechanical flaws.