The contacts son owns a 2003 Ford Windstar. The contact received notification of NHTSA Campaign Number: 11V030000 (Structure). The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the rear of the vehicle. The vehicle was taken to an independent mechanic, where it was diagnosed that the exhaust pipe was punctured. The contact was advised that the front subframe was severely corroded; however, the dealer informed the contact that the vehicle would not be repaired due to the corrosion. The vehicle was not repaired. The contact parked the vehicle and the vehicle was no longer driven due to the safety concerns. The manufacturer was not notified of the failure. The failure mileage was unknown.