sorry to again revive an old thread... I've got a 97 C34 Stagea and my airbag light flashes all the time. i've tried this method and it changes to a flashing sequence.
off long
on long
off short
on short
then repeats.
then if i do the door light trick, it goes back to constantly flashing. i'm assuming this is a diagnostic code.
also, my horn used to work intermittantly, now doesn't... i checked all the connections. found nothing. i think it may be a clock spring. would that have this affect?
cheers