Control unit required for OEM retrofit of LED headlights for Audi A6, A7 4G Please contact a local Audi dealer for replacement of the on-board control unit Connect the vehicle to the VW diagnostic device - Current codings/adaptations must be copied to the new control unit Scope of delivery: Control unit Note: Only for vehicles up to model year 2014 component protection must be deactivated at your Audi dealer The material supplied comes partly from test vehicles and has undergone a full functional test. The software is up to date