Audi A3 and S3 passenger airbag may deactivate high
Your car has a sensor mat in the front passenger seat that detects whether someone is sitting there and turns the passenger airbag on or off. On these cars that sensor can fail and switch the passenger airbag off even when an adult is sitting in the seat. If you are in a crash with the airbag switched off, the person in that seat is much more likely to be hurt. The dealer replaces the seat sensor mat and updates its control unit, free of charge.