WHEN APPLYING BRAKE PEDAL BECAME STIFF AND THE VEHICLE DID NOT STOP OR SLOW DOWN. HAS HAPPENED 5 TIMES, ONCE RESULTING IN A CRASH. ALSO HAPPENED IN REVERSE. DEALER HAS SEEN VEHICLE 3 TIMES, AND THOUGH IT WAS THE LEAKING BATTERY ACID WHICH WAS CAUSING CAUSING THE DEFECT. *AK