KUFATEC Coding Key Interface for final coding when retrofitting an original seat heating Simply connect the adapter to the vehicle's OBD interface - done! The interface automatically adapts the retrofit to the vehicle's existing coding Compatible with the following models: Audi A4 8W Audi A5 F5 Audi A6 4A Audi A7 4K Audi A8 4N Audi Q5 FY Audi Q7 4M Audi Q8 4M Audi e-tron GE VW Touareg CR Scope of delivery: 1 coding key for OBD Note: The diagnostic interface can only be used for one vehicle Compatibility check of the on-board control unit