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How to program mechatronic?
My 2014 x3 35i was stuck in park yesterday and I got the generic drivetrain malfunction warning. Shut down and restart same thing. Shut down walked away for 20 min, came back and worked fine but had check engine warning. I drove it home and scanned codes. Has 420531 electronic transmission control output stages short to earth. All i come up with is the mechatronic needs to be replaced. I found bmw pn 24347647840 which I am confident I can install, the only issue I have is how to handle the programming/flash of the new unit. Anybody done this before? I havent found many people needing to do this on a 8 speed. It has 92k on it and has been otherwise flawless
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