Photo courtesy of Subaru.

Photo courtesy of Subaru.

Subaru is recalling 32,400 2012 model-year Impreza four-door sedans and station wagons –except WRX/STI models – to address a problem affecting the occupant detection system, the National Highway Traffic Safety Administration said.

The recall covers Impreza vehicles manufactured from April 21, 2011, to Feb. 16, 2012.

In these cars, the occupant detection system (ODS) may deactivate if a front-seat passenger operates a device that’s plugged into the power outlet, such as a music player or cell phone, or touches a metal part of the vehicle such as the forward/rearward seat adjuster lever. If the ODS deactivates, the front-passenger air bag will be turned off and unable to deploy in the event of a crash, NHTSA said.

Subaru dealers will replace the occupant control unit with a modified one, free of charge. Vehicle owners can reach Subaru customer service at (800) 782-2783. Subaru’s number for this recall is WQT-55.