WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, and 2001 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.
00 9 340
Lever out switch unit (1) with special tool 00 9 340 and withdraw in direction of arrow.
Disconnect plug connection behind it and remove switch unit (1).