TL* THE CONTACT OWNS A 2004 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE WAS PARKED, WITH THE REAR LIFT GATE OPENED, WHEN IT BEGAN TO ROLL BACKWARDS. WHILE ATTEMPTING TO ENTER THE MOVING VEHICLE, THE CONTACT WAS KNOCKED DOWN AND SUSTAINED INJURIES. THE VEHICLE CONTINUED TO ROLL BACKWARDS UNTIL CRASHING INTO A TREE. THE VEHICLE WAS NOT TAKEN TO HAVE THE FAILURE DIAGNOSED OR REPAIRED. THERE WAS AN INVESTIGATION OPEN UNDER NHTSA ACTION NUMBER: EA09013 (STEERING POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL) STEERING:COLUMN STEERING:COLUMN LOCKING:ANTI-THEFT DEVICE) THAT MAY BE RELATED TO THE FAILURE. THE FAILURE MILEAGE WAS 82,000. THE VIN WAS UNAVAILABLE.