There are also some QOL improvements like allowing the cable to be switched between modes without having to unplug/replug the cable (though in fairness you can just leave the cable in D-CAN mode and both D-CAN and K-line communications will work).

The bimmergeeks cable has firmware that fixes that bug, and it can read/write to all modules without issue. In the case of other modules (all MOST-bus modules, GM transmission modules, E9x/E6x M DMEs), the bug causes junk data to be written and can actually brick those modules. In the case of the MSV80.1 that the X3 has the consequences aren't too large - it causes you to be unable to read memory addresses, and flashes are much slower. Unfortunately the firmware (which was written by onestopelectronics and eventually copied by all the Chinese clones) has a bug that causes it to wrap/unwrap some messages incorrectly. That microcontroller has firmware onboard that handles the conversion seemlessly, so INPA/Ediabas doesn't know the difference. Then for received messages, it unwraps the CAN-packet, turns that into a K-line message, and sends that to the computer. The way all BMW D-CAN cables work is that there's an onboard microcontroller that takes a K-line message, wraps it in a CAN packet, and sends that to the module. So at that point most cables started coming without pins 7 and 8 connected together, and shortly after the cables with the switches started popping up.Īs far as what the bimmergeeks cable does: In those cars cases, when you connect a cable that has pin 7 and 8 joined together, that confuses the software because it interprets some of those signals as data, which is obviously junk. The ethernet wiring uses pin 8 in addition to all the other unused pins on the port. However when BMW switched to the CIC navigation system in 2010, they wired up ethernet to the OBDII port. In the old days cables used to come with pins 7 and 8 soldered together and the cables would work with everything without fussing around with a switch. 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.

Whitch k dcan cable is the best