Hi Folks- This posting somehow found me after a few years. People have driven their cars with the ABS module removed with no other problems than a loss of ABS/DSC/etc so it (at least) has to be connected in a star configuration and not daisy chained. I would definitely try to disconnect it, power down and hope whatever is wrong clears when the car powers up... good luck!

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David.X5
2001 X5 4.4i Sport
SOLD! at 160k miles