Tl* the contact owns a 2002 ford f-350. while driving approximately 20 mph, the contact depressed the brake pedal and the pedal erroneously traveled to the floorboard. the vehicle was taken to the dealer for diagnostic testing. the technician advised the contact that the brake lines were corroded and leaking brake fluid. the technician also advised that the brake lines would have to be replaced. the vehicle was repaired. the approximate failure mileage was 68,000.