Highline Door Control Parts for Audi Q8 4M Some vehicles require replacement of door control parts when the following upgrades have been made: Side Assist auto-dimming exterior mirrors Folding exterior mirrors Please contact a VW/Audi partner for the replacing 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: Hardware may be partly from test vehicles and have undergone a full functional test. Software is up to date