: Adds a short "beep" or "chirp" from the alarm siren when you lock or unlock the vehicle, providing an audible confirmation.
. Coding allows you to unlock "hidden" features already present in the car's software but disabled by the factory. Essential Audi A3 8V Coding & Adaptations audi a3 8v coding list
Automatically tilts the passenger-side mirror down when reversing. : Adds a short "beep" or "chirp" from