Tl* the contact owns a 2008 lincoln navigator. the contact stated at low speeds the vehicle brake pedal went to the floorboard and failed to respond. in addition, the traction control and the maintenance warning indicators illuminated. the contact stated after a few minutes, the brake pedal functioned normally and after restarting the vehicle, it operated normally. the vehicle was taken to the dealer where it could not be diagnosed. the manufacturer was notified of the failure. the failure mileage was approximately 60,000.