KUFATEC diagnostic interface: Interface (coding dongle) for final coding when retrofitting original LED headlights Suitable for the following vehicles: Audi A4 8W (up to model year 2019) Audi A5 F5 (up to model year 2019) Audi Q5 FY (up to model year 2020) Simply connect the adapter (dongle) to the vehicle's OBD interface - done! The interface automatically adapts the retrofit to the vehicle's existing coding Selectable options: LED headlights LED matrix headlights Scope of delivery: Diagnostic interface Note: The diagnostic interface can only be used for single-vehicle compatibility Check the on-board control unit Not suitable for US cars