I have done this many times. The secret is getting the bolt out of the steering wheel without damaging the lock after you remove the airbag without it blowing. You will need some specail tools...
You need to be really carefull when working on a system that could hurt you. If the airbag blows while you are near, it will break fingers, nose, or anything else.
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS