this is needed on pre-E9x cars, because the the DME and EGS sit on pin 7, and everything else sits on pin 8. The only thing the switch on the D-CAN cables does is join pins 7 and 8 together. Impossible to tell which without more information. Or his D-CAN cable may have simply had CAN turned off. I don't know for sure what kind of cable that guy had. Transmission still goes to Pin 7 I believe, and everything else to Pin 8. So what BMW did was wire up its CAN high/low wires directly to the OBDII port (at Pins 6 and 14). The hardware and software just isn't there. Unlike its predecessor (the MSV70), the MSV80.1 has no capability of communicating via K-line. ![]() ![]() ![]() Click to expand.So the facelift (N52) E83 is a little bit weird.
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