64 12 577 Replacing changeover valve for independent/auxiliary heating: Notes

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.

WARNING: Risk of scalding!
Only perform the following repair work on an engine that has cooled down.
Follow notes for repair work on cooling system. See VENTING/FILLING WITH VACUUM FILLING UNIT and BLEEDING COOLING SYSTEM AND CHECKING FOR WATERTIGHTNESS .

Necessary preliminary tasks:

COMPLETELY REMOVE THE INDEPENDENT HEATER.

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

NOTE: Mark position of coolant hoses prior to dismantling.

Release spring clamps (1) and detach coolant hoses.

Fig 1: Identifying Coolant Hoses Spring Clamps

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Unfasten screws (2).

Remove changeover valve for independent/auxiliary heating (3).

Fig 2: Identifying Independent/Auxiliary Heating, Plug Connection And Screws

Courtesy of BMW OF NORTH AMERICA, INC.