61 31 028 Replacing light switch (Z3 roadster, Z3 coupe)
WARNING: This page is about a different car, the 2002 BMW Z3 and 2001 BMW Z3. However, it is still accessible from the selected car via links, so may be relevant.
Unclip button cover.
Unfasten lock nut and twist button to remove.
Press together retaining clips with special tool 61 3 100 and slide backwards to remove.
Pull off connectors.