I think this happend to me once too... I forgot to plug the airbag light back in on the bottom side of the radio bezel.
Did you get this fixed yet?
1st let me say awesome thread...this was a huge help. I haven't tinkered with car stereos for about 20 years. [insert old jokes here]
I'm still waiting on my 9w7 to arrive but I thought I'd get a headstart on the wiring. I have the RCD-510 in my CC. It took me about an hour, mainly because I wanted to be very sure which pins I was connecting.
But... I apparently am now the proud owner of an airbag service light!! What the S#!%?!?
Any help would be awesome. I'm guessing I poked around in the stereo housing a bit too aggressively. HELP!