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Home >> Audi >> 2003 >> A8 Quattro >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Radio, Telephone, Navigation, Trip Computer >> Steering wheel with audio controls m.y. 1997-1999 >> General information

General information

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(R), switch-off the emergency (back-up) battery for the Telematic/Telephone Control Module prior to disconnecting vehicle battery. See EMERGENCY (BACK-UP) BATTERY, SWITCH ON/OFF, RESET TIME REGISTER .
  • After reconnecting vehicle battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows according to appropriate article and/or Owner's Manual.
  • After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar(R), switch-on the emergency (back-up) battery for the Telematic/Telephone Control Module. See EMERGENCY (BACK-UP) BATTERY, SWITCH ON/OFF, RESET TIME REGISTER .

Before troubleshooting or servicing, technicians must be familiar with the functions and operation specifics of the radio system. Always read the radio and vehicle owner's manual and review all steering wheel audio control functions.

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