Replacing low beam bulb (gas discharge headlight): Notes

CAUTION: On vehicles equipped with Audi Telematics by OnStar®, switch-off the emergency (back-up) battery for the Telematic/Telephone Control Module prior to disconnecting the vehicle battery. See EXAMPLE: SWITCH OFF EMERGENCY (BACK-UP) BATTERY . Switch-on the emergency (back-up) battery after reconnecting the vehicle battery. See EXAMPLE: SWITCH ON EMERGENCY (BACK-UP) BATTERY .

WARNING: High Voltage! ALWAYS disconnect battery Ground (GND) strap before working on parts of the gas discharge headlights marked with the yellow high voltage symbol.