WE WERE INVOLVED IN AN ACCIDENT. OUR 2004 FORD EXPEDITION SEAMED TO FAIL TO RESPOND TO SLAMMING ON THE BRAKES TO AVOID COLLISION. WE REAR ENDED A CAR, NO ONE HURT. NO AIR BAG DEPLOYMENT AT ALL. #0-35 MPH SPEED. HIT CAR IN FRONT OF US AFTER HE STOPPED IN ROAD FOR NO REASON. MAJOR DAMAGE TO OUR TRUCK. SHOULD HAVE BEEN FENDER BENDER.