61 13... Inline plugs, 8-, 12-pin, System D2.5
WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
Move upper section of connector (1) and lower section of connector (2) against each other in direction of arrow.
With special tool 61 0 313 from kit 61 0 300 , press back retaining hook (3) of corresponding contact and pull out cable with contact.