The recall covers 279,646 vehicles in 21 states and most of Canada. No injuries or accidents are blamed on road salt corrosion and Ford does not consider the voluntary recall to be a safety issue.
The recall letters will instruct owners to have their vehicles inspected. Dealers will install a new drum or a disk bearing kit if there is damage to the wheel bearings.
The recall is the seventh for the popular Focus since its introduction in 1999.
Previous recalls involved a speed control throttle that did not return the engine to idle, a windshield wiper motor that could overheat, a wire harness that could disable the stop and taillights, and rear wheel hub retaining nuts that can loosen allowing the brake drum assembly to separate from the vehicle.