How to restart after wrecking it

This is a swag but if the airbag deployed and it was replaced with something aftermarket,or even OEM, the body shop probably couldn't version code the new SRS module to the car etc.The cruise control code also could be related to the clock-spring (in the steering column).There's this possibility too-a generic scan tool-or better-an "un-enhanced" scan tool can give you very misleading information and drive a tech over the edge! Most aftermarket scan tools really can't interface with MB's reliably. I have, in a pinch been able to erase codes with aftermarket tools-but it always seems to take doing it twice to make it go away. That would be the only DIY tip I can offer up-erase twice. If no luck then its time to call the insurance company up & get it to the dealer or an independent who is highly trained and tooled. The 171's were cool cars, but it's still an MB and they take a special kind of person to diagnose and repair. I always wondered how the Chrysler Techs dealt with the Crossfire's when they came out.