USUALLY IN COLD TEMPERATURES, WHENEVER THE REAR AUTOMATIC HATCH IS OPENED FROM THE EITHER THE FOB OR THE VAN'S CONTROL PANEL, THE REAR HATCH DOOR BEGINS TO CLOSE BACK WITHOUT WARNING/NOTICE. THIS HAS HAPPENED AT LEAST 20 TIMES SINCE WE PURCHASED OUR 2009 TOYOTA SIENNA IN DECEMBER OF 2008 AND IS INCREASING IN FREQUENCY. THE APPROXIMATE ONSET DATE IS RECORDED BELOW ON THIS FORM. WHEN IT BEGINS TO CLOSE, ADULTS AND CHILDREN HAVE BEEN TRAPPED BETWEEN THE HATCH AND THE VEHICLE, RESULTING IN PINNING AND CUTS TO THE HEAD. ONLY WITH STRONG MANUAL FORCE DOES THE HATCH STOP CLOSING. AS OF TODAY, 2/9/10, THERE HAVE BEEN NO NOTIFICATIONS OF A RECALL OR EFFORT TO CORRECT OR REPAIR THE PROBLEM. BECAUSE THE PROBLEM WAS INFREQUENT AT FIRST AND CORRECTED ITSELF WHEN THE TEMPERATURES GOT WARMER, WE THOUGHT IT WAS JUST A TEMPORARY GLITCH, BUT THEN THE PROBLEM REAPPEARED ONCE TEMPERATURES BEGAN TO GET COLD AGAIN IN THE FALL OF 2009. *TR