61 13... In-Line plugs, 20-pin, system D2.5
WARNING: This page is about a different car, the 2010 MINI Cooper and 2009 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.
Pull locking slide (1) out of connector (2).
With special tool 61 0 303 , press down retaining hook (3) of corresponding contact and pull out cable with contact.