I had the same problem and the only tools I could find to do it was
http://www.peakeresearch.com/srstool.htm and a few on EBay.
I have a tek mate program and cable and was surprised that there was
no PC based tool for this job.
In the end I got my local independent to do it for 10GBP.
Let us know if you find another solution.
Too late now, but this problem can be avoided by disconnecting the
battery first. (On some cars, you have to wait some period of time
afterward; rather than try to recall which ones are which, I just wait
20 minutes for all of them.)
The light cam on because you cycled the ignition while the airbag was
disconnected. This causes a fault that requires the scan tool to remedy.
Airbags are a "safety of flight" item, and any error that occurs is deemed
to be a fatal error that demands a technician to diagnose and remedy. This
sort of error is thought to be one that can not be considered transitory,
and therefore can not fix itself.
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