61 13 ... In-Line Plugs, 3-, 6-Pin, System Elo-Power 2.8

Press locking hook (1) in direction of arrow and disengage. Then unlock locking hook (2) and remove lock.

Fig 1: Identifying Locking Hook

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Press down arrester hook (1) with screwdriver and pull out cable with contact towards rear.

Fig 2: Pressing Down Arrester Hook With Screwdriver

Courtesy of BMW OF NORTH AMERICA, INC.