Just purchased a 2006 BMW 750Li, once in a while the car won't crank or start. We took it to the BMW dealer and they said we need to replace the crankshaft sensor and cam sensor an it cost $1600 to get it all done. A day later we took the car home and still has problems. When we hit the start button a message sometimes pops up saying "Transmission Fault". Anyone know or have any experience about it?

Asked by Nov 21, 2015 at 12:57 PM about the 2006 BMW 7 Series 750Li RWD

Question type: Maintenance & Repair

1 Answer

263,765

First check the condition of the battery and alternator, low voltage will sometimes cause this issue, if they check out, you might need a new integrated supply module, check out this link for more information.....http://www.bimmerfest.com/forums/showthread.php? t=457581

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