The contact owns a 2008 Mercedes-Benz C300. The contact stated that while depressing the brake pedal, attempting to stop, the vehicle failed to respond as intended and causing the contact to drive through a stop sign, then merge onto the interstate independently. The driver's side rear tire was leaking brake fluid. The check brake system warning light illuminated. The vehicle was towed to a dealer, where it was diagnosed that the brake line was corroded. The vehicle was repaired under warranty for the subframe prior to the failure; however, the brake lines were not covered and needed replacement. The vehicle was then towed to an independent mechanic where the brake lines were pending replacement; however, the mechanic was waiting for parts. The manufacturer was notified of the failure and offered no assistance. The approximate failure mileage was 164,000.