KUFATEC coding key interface for final coding for vehicles with MMI 3G simply connect the adapter to the OBD port of the vehicle - done! once the interface is connected to the OBD port, the retrofitting automatically adapts to the current coding of the vehicle this interface brings up/adds the entry "parking aid" in the CAR menu. A coding of the vehicle using the diagnostic system is always necessary suitable for the following retrofits: MMI3G - reversing camera MMI3G - PDC (Park Distance Control) Scope of delivery: 1x coding key Note: no guarantee of function if the retrofits were not purchased from KUFATEC GmbH & Co. KG the diagnostic interface can be used multiple times - but only for the same vehicle