Quote:
Originally Posted by lewisredfern001
Another theory is that as i have a mix and match of control units and speedo and ecu, do they all need to be linked together within the car?
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Essentially, yes. Good luck, I am not sure that there is a solution to your problem, other than selling it. A BMW tech may recognize that some of the symptoms relate to a certain control unit, but then the question is whether you are going to get a replacement to match vehicle #1, or donor vehicle #2.
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2007 X3 3.0si, 6 MT, Premium, White
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