64 0... Disconnecting a water hose
WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.
When removing water hoses which are located in the upper area of the cooling system, disconnecting them prevents a large-scale escape of coolant.
Fit special tool 13 3 010 to coolant hose (1) as illustrated.
Disconnect water hose (1) by turning nut (2) in direction of arrow.