THIS 2011 BMW 3 SERIES WAS IN AN ACCIDENT SEP OF 2014 AND REPAIRED. THE STEERING WHEEL AIRBAG AND THE SIDE CURTAIN AIRBAG WERE REPLACED. NO ONE HAS BEEN ABLE TO TELL US IF THESE REPLACEMENT AIR BAGS ARE SAFE. THE REPAIR FACILITY CAN ONLY SAY THAT ALL PARTS WERE BMW PARTS AND THE AIRBAGS WERE TAKATA. HOW DO WE KNOW THE REPLACED AIR BAGS ARE OK.?