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The wheel is keyed and can only go on in one position, it’s not possible for it to be off by a tooth. It’s normal for the m1/m2 buttons to not work immediately after the battery is disconnected and reconnected (which usually is done when removing the airbag) but that is resolved after driving for a very short time. It isn’t normal to have a driver assistance error after swapping the wheel. Possibly your vibration motor was not reconnected which causes this error because the wheel cannot vibrate for blindspot/lane departure warnings. You can get a much better idea what is wrong by scanning for codes with an app like BimmerLink or protool.
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