WHILE DRIVING 30-35 MPH CONSUMER'S VEHICLE WAS INVOLVED IN A CRASH WHICH RESULTED IN THE VEHICLE ROLLING FOUR TIMES. THE CAR SEAT STRAP SNAPPED WHILE LATCHED. THE CHEST LOCKING CLIP WAS REPLACED WITH LOCKING MECHANISM WHICH ACTED AS A BACKUP RESTRAINT. UPON IMPACT, THE AIR BAGS FAILED TO DEPLOY. *AK.....ALSO, SHOULDER BELT FAILED. *AK