Hello, someone knows which OBD II interface for the 850 2.5 TDI (BJ 1996 MJ 97) is the right one. Which protocol you need and which SW is good. The newer V70 probably have ISO Prltotkoll, but unfortunately nobody knows anything about the Audi engine. Would be good if you could keep me going, as this model of the service can only be reset via the interface. Unfortunately, the friendly one was rather unfriendly and did not want to help me or provide information. Thank you in advance.