65 77 558 Removing And Installing/Replacing Control Electronics For Driver's Seat Occupancy Detector
WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary tasks:
Move seat into "back" and "top" position.
If necessary, cut through cable strap on control electronics (1).
Turn control electronics (1) approx. 45° in direction of arrow and unclip from seat frame.
Disconnect plug connections (2) and remove control electronics (1).