OBD interface for activating the trailer manoeuvring assistant "Trailer Assist" Trailer Assist takes over the steering when a trailer is coupled The direction of the trailer is determined via the lower touchscreen Suitable for the following vehicles: Audi A6 4A Audi A7 4K Audi A8 4N Audi Q7 4M from model year 2020 Audi Q8 4M Audi e-tron GE Scope of delivery: Coding dongle Notes: Only suitable for vehicles with surround camera (PR no.: KA6) and trailer hitch (PR no.: 1D3, 1D4, 1D6)