WHILE DRIVING VEHICLE ABOUT 30 TO 35 MPH ON A CITY STREET, A VEHICLE STOPPED IN FRONT OF CONSUMER'S VEHICLE. WHEN CONSUMER TRIED TO STEP ON BRAKES THEY DID NOT RESPOND, REARENDING THE OTHER VEHICLE IN A CRASH. THE DEALER WAS CONTACTED AND THEY SAID THIS TYPE OF PROBLEM HAD HAPPEND BEFORE. *AK