THE REAR AUTOMATIC LIFT-GATE OF MY 2004 TOYOTA SIENNA IS DEFECTIVE. APPROXIMATELY 50% OF THE TIME THE LIFT-GATE OPENS AND IMMEDIATELY STARTS TO CLOSE ON TOP OF YOUR HEAD. IT'S GOTTEN SO BAD THAT MY FAMILY NOW PUSHES THE BUTTON TO OPEN THE REAR LIFT-GATE WHILE WE STAND CLEAR AND THEN WHEN IT REVERSES, WE KEEP PUSHING THE BUTTON ON THE REMOTE OVER AND OVER UNTIL FINALLY THE REAR LIFT-GATE WILL STOP REVERSING AND STAY UP. ONLY THEN CAN WE DUCK UNDER THE DOOR TO GET WHAT WE NEED OUT OF THE BACK. IN THE EARLY STAGES OF THE PROBLEM, FAMILY MEMBERS WERE WHACKED OVER THE HEAD AT LEAST A DOZEN TIMES. IT DIDN'T TAKE LONG TO LEARN THAT THE REAR LIFT-GATE CANNOT BE TRUSTED. IT BEGAN AS AN INTERMITTENT PROBLEM, BUT IT HAPPENS EVERY DAY NOW. THE DEALERSHIP SAID THIS MORNING THAT THE PROBLEM IS NOT UNDER WARRANTY. *TR