I WAS PARKING ON A STEEP HILL AND AS I STEPPED ON THE BRAKE, THE VEHICLE LURCHED FORWARD APPROXIMATELY 2 FEET AND HIT THE SIDE OF A FENCE POST AND CAUSED DAMAGE TO MY FRONT BUMPER. SINCE I BOUGHT THIS VEHICLE IN 2007 I HAVE NOTICED THAT OFTEN TIMES WHILE DRIVING AND THEN TRYING TO BRAKE ON STEEP HILLS THE VEHICLE LURCHES FORWARD. THIS LURCHING OFTEN CAUSES ME TO END UP IN THE MIDDLE OF AN INTERSECTION OR VERY CLOSE TO A CAR IN FRONT OF ME, THUS MAKING IT A VERY UNSAFE SITUATION ESPECIALLY WHILE DRIVING KIDS. I HAVE REPORTED THIS PROBLEM TO MY TOYOTA SERVICE DEALER SEVERAL TIMES AND EACH TIME THEY DENY THAT THERE IS ANY ISSUE.