Additional information:

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Audi S8, 2003 Audi A8, 2002 Audi S8, 2002 Audi A8, and 2001 Audi S8. However, it is still accessible from the selected car via links, so may be relevant.

Instrument cluster, On Board Diagnostic (OBD). See ON BOARD DIAGNOSTIC (OBD) OF INSTRUMENT CLUSTER, INITIATING .
Navigation system functions, On Board Diagnostic (OBD)
See NAVIGATION SYSTEM III (NS-LOW) THROUGH 01.01, ON BOARD DIAGNOSTIC (OBD) or NAVIGATION SYSTEM IV (BNS 4.0) FROM 01.01, ON BOARD DIAGNOSTIC (OBD) .

See NAVIGATION SYSTEM III (NS-LOW) THROUGH 01.01 or NAVIGATION SYSTEM IV (BNS 4.0) FROM 01.01 .
Complaint/symptom based repairs ("Service Fixes")
See Technical Bulletins.