S6 V8-4.2L (BBD) (2004)
Radio/Stereo: Description and Operation
General Information
Radio System
General notes
CAUTION!
Before disconnecting the battery, determine the correct coding for the anti-theft radio.
Disconnect battery Ground (GND) strap before working on electrical system.
NOTE:
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Remember to re-activate vehicle options (radio, clock, power windows, engine) after reconnecting battery according to user manuals.
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When addressing customer complaints it is absolutely necessary to know the functions and operation of the radio system.
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Wherever possible, only genuine Audi parts should be used. Only then can trouble-free installation and optimal reception be guaranteed.
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All radio systems have anti-theft coding.