Highline door control parts for Audi A6 4A Some vehicles require the replacement of the door control parts when the following upgrades have been carried out: Side Assist auto-dimming exterior mirrors Folding exterior mirrors Please contact a VW / Audi partner for the replacement of the control unit Connect the vehicle to the diagnostic device and then transfer the existing vehicle code to the new control unit Scope of delivery: Front left door control unit Front right door control unit Note: The hardware may partly come from test vehicles and have undergone a complete functional test. The software is up to date