THE CAR WAS PARKED WITH ENGINE RUNNING AND PARKING BRAKE ON. I RELEASED THE BRAKE ON AND THE CAR LURCHED FORWARD CROSSING A CURB AND HITTING A ALUMINUM GUARD RAIL. THE SERVICE SEQ TRANSMISAME LIGHT CAME ON . AFTER BEING TOWED TO THE DEALER. IT WAS FOUND A HYDRAULIC LINE HAD BROKEN FROM CORRODING. THE DEALER PUT IN A NEW UNIT BUT THE OLD COMPUTER WOULD NOT WORK AND IS NOW PUTTING A NEW COMPUTER ABOUT 6600.00 AT THE THIS POINT. SO FAR TOYOTA DOESN'T KNOW US. *TR