64 12 570 Replacing auxiliary water pump for independent/auxiliary heater

WARNING: This page is about a different car, the 2010 BMW 535xi, 2009 BMW 535xi, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

UNLOCK AND DISCONNECT PLUG CONNECTION FOR AUXILIARY WATER PUMP .

Detach cable straps (1).

Release spring clip (2).

Detach auxiliary water pump for auxiliary heater (3).

Disconnect auxiliary water pump for auxiliary heater (3) from mounting for auxiliary water pump (4).

Fig 1: Identifying Auxiliary Heater, Spring Clip And Cable Straps

Courtesy of BMW OF NORTH AMERICA, INC.