64 12 577 Replacing changeover valve for independent/auxiliary heating

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Risk of burning!

Only perform the following repair work on an engine that has cooled down.

Necessary preliminary work:

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 Plug Connection, Independent/Auxiliary Heating And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Top up coolant and vent COOLING SYSTEM .