TL* THE CONTACT OWNS A 2008 DODGE NITRO. THE CONTACT WAS ATTEMPTING TO REVERSE AND WHEN THE BACK-UP ASSIST SYSTEM HAPHAZARDLY ALERTED THAT THERE WAS AN OBJECT BEHIND THE VEHICLE. THE CONTACT STATED THAT THERE WERE NO OBJECTS OR PERSONS BEHIND THE VEHICLE. THE CONTACT INSPECTED THE VEHICLE AND NOTICED THAT ONE OF THE BACK-UP SENSORS WAS PUSHED INWARD AND THE PLASTIC BETWEEN THE BUMPER WAS MELTED. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING WHERE THE TECHNICIAN ADVISED THAT THE EXHAUST PIPE WAS RUSTED AND FRACTURED. THE TECHNICIAN ALSO STATED THAT THE EXHAUST PIPE, BUMPER AND BACK UP SENSOR WOULD HAVE TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 51,000.