Headlights, Servicing

Headlights, Servicing

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 (backup) 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.
- After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar, switch-on the emergency (backup) battery for the Telematic/Telephone Control Module.

- Disconnect battery Ground strap with ignition switched off.

NOTE: Steps after re-connecting voltage supply.

WARNING - High voltage:
On vehicles with High intensity gas discharge (Xenon) headlights, always disconnect the battery Ground strap before working on parts of the High intensity gas discharge (Xenon) headlights marked with yellow high-voltage warning symbols.