Control unit - Highline for Audi A6 4G In some cases, the control unit for the on-board electrical system (BCM1) must be replaced when installing xenon headlights, heated seats, etc. For replacement of the on-board control unit, please contact a local Audi dealership Connect the vehicle to the Audi diagnostic tool - Current codes must be copied to the new control unit - After replacement, the component protection must be removed (online connection required) Selectable options: up to model year 2014 from model year 2015 Scope of delivery: Control unit Note: Not suitable for the USA