61 35 900 Removing and installing/replacing ring antenna of electronic immobilizer
WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2010 BMW M5, 2009 BMW M5, 2008 BMW M5, 2007 BMW M5, and 2007 BMW 530xi. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary tasks:
Disconnect plug connection (1).
Position special tool 61 3 300 as illustrated with flattened side (A) to ring antenna of electronic immobilizer (2).
Lever out ring antenna of electronic immobilizer (2) in direction of arrow and remove.