64 12 577 Replacing changeover valve for independent/auxiliary heater

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. 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. See 64 0... DISCONNECTING A WATER HOSE .

Necessary preliminary tasks:

REMOVE FRONT LEFT WHEEL ARCH TRIM

IMPORTANT: Risk of damage!
Observe coolant through flow direction, mark coolant hoses before removing.

NOTE: If necessary, catch escaping coolant.

Disconnect plug connection (1).

Release spring clamps (2) and detach coolant hoses.

Release nuts (3) and remove changeover valve for independent/auxiliary heater (4).

Fig 1: Identifying Independent/Auxiliary Heater, Plug Connection, Spring Clamp And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Vent cooling system and check for water leaks . See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (M57TU, M57T2) or 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (N63) .