You should re-post to the Audi forum.
But if the system is anything like a BMW - likely since the requirements
from the DOT are the same - you pretty much have to go to the dealer.
It *wasn't* "random", and there *is* a reason.
No, you have to go in for service.
The Airbag System is a safety of flight item, and any error that is detected
is assumed to be permanant, and requires a techincian to troubleshoot and
Having said that, the most common failure on BMWs is the seat switches and
the seat belt switches. I'm not certain what the cause is on the Audi.
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