Battery Disconnect
WARNING: This page is about a different car, the 2003 Audi allroad, 2003 Audi TT, 2003 Audi S6, 2003 Audi A6, and 2003 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
When vehicle battery is disconnected and reconnected, ignition key must be held in position 2 (Run) for about 5 seconds before starting vehicle.