KUFATEC Coding Key Interface for final coding, if original Bi-Xenon headlights have been retrofitted to the VW Amarok 2H. Simply connect the adapter (dongle) to the vehicle's OBD interface – that's it! The interface automatically adapts the retrofit to the existing vehicle coding. Scope of delivery: 1x coding dongle. Note: Xenon headlights can only be retrofitted to vehicles equipped with the 7H0937090X on-board network control unit. On some vehicles, replacement of the electrical system controller (BCM1) is necessary. The diagnostic interface can only be used for one vehicle.