Sorry I don't know much about BMW but I do know about cars and it sounds like you have a bad wheel speed sensor or more than one which controls those systems.If the car does not get a signal of how fast the wheel is spinning it will make the traction control not work along with the ABS.
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Sorry I don't know much about BMW but I do know about cars and it sounds like you have a bad wheel speed sensor or more than one which controls those systems.If the car does not get a signal of how fast the wheel is spinning it will make the traction control not work along with the ABS.