my girlfriends car recently came up with the airbag service lights on the dash, we recently had the knock sensor and oxygen sensors replaced, she is thinking its something the mechanic did, I have no idea. We had a rear end accident a few months ago, rarely drive the car as we have 4 others, and the thing about it is that the steering wheel control to change the station on the radio quit working as well, the air and volume still work correctly. Any ideas as to why both would come on and go out at the same time? Is there any codes on the on board diagnostics that show anything about the airbag or restraint system?