2001 BMW 325I

I changed the right side motor mount and after the repair, car will not crank. Battery is good. I can hot wire the car and it will run, however, it will not crank from the switch. The electronics Immobilizer control relay is not being energized.


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  1. You may need to back track your work carefully to see what you may have left loose(possible ground) or damaged(pulled loose). There are only three wires on the immobilizer. The signal from the ignition key, the signal from the transmission (to make sure its in neutral and the output signal to the starter. Make sure the wires are sound by performing a continuity test.

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    2001 BMW 325I immobilizer wiring diagram

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