I have a 1999 523i. On the inicator stalk there is a button marked "BC" but pressing it does nothing.
Looking at the connector plug, there is only 4 wires connected. I assume these are Common, Left, Right & High Beam.
If the button is present, is the feature useable or is the indicator stalk with BC button fitted to all cars, irrespective of whether the feature is fitted.
Sorry this is a bit rambling. Been a long day.