Audi A4, A5, S4, S5 passenger airbag may shut off high
These Audis have a sensor system in the front passenger seat that tells the car whether someone is sitting there. The cable connected to that sensor can corrode. When it does, the car's software can wrongly decide something is broken and switch off the front passenger airbag. If a crash happens while the airbag is switched off, the person in that seat has less protection and can be hurt more badly. Dealers will add cable ties to the wiring so the cable is protected.