Universal airbag resistor's from capital seating here's the number for them (0116 2664112) they cost £10 each and fitted correctly you won't need to make that costly visit to the stealer's. I recenlty fitted recaro's in my 182 and was told i would need to make a trip to the stealer's to get my air bag's reset but once i fitted the resistor's from capital seating the light whent out.
or go to maplins and buy a 14p resistor 3.3 ohm value and stick it between the old connections. you'll need one for the seat airbag and one for the pre tensioner if youve removed that too. ive got 5 in my car at the moment, still havent removed the steering wheel one yet
Interesting, I have always been told that once the airbag fault has been registered it can only be turned off due to its seriousness - ie fault with airbag is a no no.