64 12 577 Replacing changeover valve 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.

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).

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

Fig 1: Identifying Spring Clamps, Coolant Hoses, Auxiliary Heater And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Top up coolant and vent cooling system.