Malfunctioning transponder and/or loss of key procedure

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.

Transponder is integrated in vehicle key.
If the transponder is faulty or a key was lost, all vehicle keys must be replaced.

Replacement keys with integrated transponder can only be replaced, made or ordered according to the key code.
Perform adaptation of all vehicle keys. See ADAPTATION OF VEHICLE KEYS .