As for sensors and the like there are no sensors involved in the front driveshaft turning. Its a simple mechanical setup. The reason it gets lost in the "how it works" stuff has to do with the way bmw uses the brakes to stop a wheel from slipping by applying the brakes to that wheel.

But the actual driving of the wheels is old school mechanical stuff. No sensors involved and no computer stuff involved on the original setup.

The 2004 and later models have xdrive. THAT has computer involvement. But yours doesn't.

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