2000 Audi A6 Airbag System Servicing

Before beginning repairs on the electrical system: Obtain the anti-theft radio security code. Switch the ignition off. Disconnect the battery Ground (GND) strap. On vehicles equipped with Audi Telematics by OnStar , switch-off the emergency (back-up) battery for the Telematic/Telephone Control Module prior to disconnecting vehicle battery After reconnecting vehicle battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows according to Repair Manual and/or Owner's Manual. After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar , switch-on the emergency (back-up) battery for the Telematic/Telephone Control Module Observe all safety precautions before starting work on any part of airbag system.