TL* THE CONTACT OWNS A 2009 FORD FLEX. THE CONTACT STATED THAT WHENEVER SHIFTING INTO REVERSE, THE TRANSMISSION WOULD JERK VIOLENTLY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER SIX TIMES FOR THE SAME FAILURE. THE TECHNICIAN DETECTED A TROUBLE CODE AND AN UNKNOWN REPAIR WAS PERFORMED ON THE TRANSMISSION. THE MALFUNCTION RECURRED AFTER THE REPAIR. THE VEHICLE TAKEN BACK TO THE DEALER FOR FURTHER REPAIRS. THE MANUFACTURER WAS NOTIFIED OF THE DEFECT. THE APPROXIMATE FAILURE MILEAGE WAS 80,000. THE VIN WAS UNAVAILABLE.