I WAS BACKING MY JEEP INTO MY YARD WITH A UTILITY TRAILER ATTACHED. I HEARD A NOISE AND I PUSHED THE GEAR SHIFT UP INTO PARK AND OPENED MY DOOR TO STEP OUT OF THE VEHICLE AND MAKE SURE I HAD NOT HIT SOMETHING. AS I STEPPED OUT THE VEHICLE STARTED MOVING BACKWARDS AND THE DRIVER DOOR STRUCK ME KNOCKING ME TO THE GROUND ON MY BACK. THE LEFT FRONT TIRE ROLLED OVER MY PELVIC AREA CAUSING SERIOUS INJURY. VEHICLE CRASHED INTO A FENCE AND JACK KNIFED THE TRAILER. COMPLAINED TO CHRYSLER AND THEY HAD THE VEHICLE INSPECTED AND I RECEIVED A LETTER SAYING THEY COULD FIND NO DEFECT. SINCE THEN I HAVE HAD ANOTHER INCIDENT WHERE WHEN I SHIFT FROM REVERSE TO PARK IT DOES NOT ENGAGE AND SLIPS BACK INTO REVERSE. FORTUNATELY I AM MORE CAREFUL AND KNOW TO DOUBLE CHECK THE SHIFTING MECHANISM. DOES NOT DO IT ALL OF THE TIME. MAY BE RELATED TO TOWING. OTHERS WHO HAVE A LATE MODEL CHRYSLER VEHICLE WITH THIS TYPE OF TRANSMISSION AND SHIFTING MECHANISM NEED TO BE AWARE OF THIS PROBLEM AND NEED TO BE SURE THE VEHICLE GOES INTO PARK WHEN SHIFTED AND DOES NOT SLIP OUT ONCE FOOT IS OFF OF THE BRAKE. *TR