64 12 577 Replacing changeover valve for independent/auxiliary heater

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 535xi, 2010 BMW 535i, 2009 BMW 535xi, 2009 BMW 535i, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Danger of scalding!
Only perform the following tasks on an engine that has cooled down.
FOLLOW INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

NOTE: DISCONNECT coolant hoses from changeover valve for independent/auxiliary heater.

Necessary preliminary tasks:

REMOVE FRONT LEFT WHEEL ARCH TRIM

IMPORTANT: Risk of damage!
Observe marked coolant flow direction.

Disconnect plug connection (1).

NOTE: Mark position of coolant hoses prior to removal.

Release spring clamps (2) and detach coolant hoses.

Unscrew nuts (3).

Fig 1: Identifying Spring Clamps, Plug Connection And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Remove changeover valve for independent/auxiliary heater (4) in direction of arrow.

After installation:

Top up coolant and vent cooling system.