64 12 577 Replacing changeover valve for independent heater

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2005 BMW 745i, 2005 BMW 745Li, 2004 BMW 745i, 2004 BMW 745Li, and 2003 BMW 745i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove wheel arch lining at front left.

NOTE: Disconnect water hoses from changeover valve for independent heater.

WARNING: Danger of scalding!
Only perform the following tasks on an engine that has cooled down.
Follow instructions for working on cooling system. Refer to 17 00 ... INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

Unlock plug connection (1) and disconnect.

Fig 1: Loosening Hose Clamps And Disconnecting Water hoses

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen hose clamps (2).

Disconnect water hoses (3).

Release nuts (4).

Remove changeover valve for independent heater (5).

Installation:

Top up coolant and vent cooling system. Refer to 17 00 005 DRAINING AND ADDING COOLANT (N62) .