BACK DOOR WAS OPENED USING THE REMOTE KEY AND THEN IT SUDDENLY CLOSED BY ITSELF. INDIVIDUAL WAS HIT BY THE DOOR AS IT CLOSED. FURTHER INSPECTION SHOWED THAT THE LEFT SIDE "STRUT" ON THE DOOR WAS LEAKING. CALLED TOYOTA CUSTOMER SUPPORT AT 800-331-4331 AND WAS GIVEN A REFERENCE #. TOYOTA ALSO REFERRED TO TSB BO001-07. BROUGHT VEHICLE TO DEALER AND DEALER WOULD CHARGE TO FIX SINCE VEHICLE HAS 51K MILES, ALTHOUGH LESS THAN 2 YEARS OLD. DEALER REFUSED TO ACKNOWLEDGE BACK DOOR STAYS WERE DEFECTIVE ALTHOUGH NUMEROUS CONSUMERS HAVE COMPLAINED, AND THERE IS A CURRENT NHTSA INVESTIGATION (ACTION #EA06020). *TR