THE REAR DOOR ON THE 2004 TOYOTA SIENNA VAN CAMER DOWN BY ITSELF. THE MOTORIZED HATCH WENT UP AND THEN ALMOST IMMEDIATELY CAME DOWN. I WAS GETTING ITEMS OUT OF THE BACK WHEN IT HIT THE TOP OF MY HEAD. IT KEPT CLOSING UNTIL I HIT THE REMOTE BUTTON , BUT AS SOON AS IT REACHED THE TOP,IT STARTED TO CLOSE AGAIN. I CONTACTED TOYOTA, AND THEY TOLD ME THE WARRANTY EXPIRED, AND IT WOULD COST $470.92 TO FIX IT. THIS WAS A SAFETY ISSUE AND COULD CAUSE MAJOR INJURY, ESPECIALLY TO A SMALL CHILD. I THINK THEY SHOULD BE RESPONSIBLE. *AK