I WAS AT A DRIVE THRU AND HAD BRAKES APPLIED AND THEN I HEARD A HISSING NOISE COMING FROM BRAKES I LET OFF BRAKES TO MOVE FORWARD AND THE BRAKES WENT HARD AND TO FLOOR CAUSING ME TO HIT THE CAR IN FRONT OF ME. I TOOK MY VEHICLE TO DEALER AFTER I LEFT AND THEY SAID IT WAS A BRAKE BOOSTER THAT HAD BEEN RECALLED. I HAVE NOT RECEIVED A NOTICE OR LETTER THAT THE BRAKES WERE RECALLED. I NOW HAVE DAMAGE TO MY FRONT BUMPER.