XLT, PASSENGER AIR BAG SWITCH WAS IN THE OFF POSITION, LIGHT WAS ON SHOWING IT WAS OFF. CONSUMER HIT A DEER AT 55 MPH, PASSENGER AIR BAG DEPLOYED. 9 MONTH OLD CHILD WAS IN SAFETY SEAT ON PASSENGER SIDE. SAFETY SEAT BROKE IN HALF AT IMPACT, CHILD'S INJURIES UNKNOWN AT THIS TIME. DAMAGE TO VEHICLE UNKNOWN AS WELL. TS