Headlights, servicing: Notes
CAUTION:
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. See EXAMPLE: SWITCH OFF EMERGENCY (BACK-UP) 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. See EXAMPLE: SWITCH ON EMERGENCY (BACK-UP) BATTERY .
WARNING:
High voltage! For vehicles with gas discharge (xenon) headlights, make sure to disconnect battery Ground (GND) strap before performing work on parts of gas discharge (xenon) headlight marked with yellow high voltage symbols.