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Home >> BMW >> 2009 >> 650i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 551 (Heating And Air Conditioning - Repair Instructions) >> Auxiliary Heater With Control Elements >> 64 12 577 Replacing Changeover Valve For Independent Heater

64 12 577 Replacing Changeover Valve For Independent Heater

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Necessary Preliminary Tasks: 

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.

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.

Fig 1: Locating Retaining Nuts
G03294182Courtesy of BMW OF NORTH AMERICA, INC.