NHTSA Complaint #10367654 — 2005 TOYOTA PRIUS

WE HAVE NOTICED REPEATEDLY (A DOZEN OR MORE TIMES) OVER THREE YEARS OF OWNING THIS CAR AND 100K MILES, THAT AS WE BRAKE GOING OVER A BUMPY SECTION OF ROAD, THE BRAKING SYSTEM FAILS AND THE CAR ACTUALLY ACCELERATES FOR ONE OR TWO SECONDS. THIS IS ESPECIALLY ALARMING WHEN WE NEED TO BRAKE SUDDENLY IN A CURVE ON A BUMPY ROAD AS IT SEEMS WE WILL LOSE CONTROL OF THE CAR. I ALWAYS BRAKE WITH MY RIGHT FOOT AND MY RIGHT FOOT REMAINS OFF THE ACCELERATOR AND ON THE BRAKE THROUGHOUT THESE EPISODES. OUR CAR IS EQUIPPED WITH THE VEHICLE STABILITY SYSTEM AND THE PASSENGER NOTICES THAT THE STABILITY SYSTEM WARNING LIGHT COMES ON DURING THESE EPISODES. IT IS NOT SIMPLY THAT THE CAR COASTS WHEN THE BRAKING FAILS, THE ENGINE ACTUALLY SOUNDS LIKE IT IS REVVING UP AND THE CAR NOTICEABLY SPEEDS UP. ONCE THE BUMPY SECTION HAS BEEN PASSED, NORMAL BRAKING RESUMES. THIS HAS NOTHING TO DO WITH THE FLOOR MAT. THIS SITUATION SHOULD BE REPRODUCIBLE THRU TESTING.