64 11 273 Replacing water valve for heating and air-conditioning unit

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: Risk of burning!
Repair work on the cooling system may only be carried out when it has cooled down.
Follow NOTES for working on cooling system.

NOTE: Clamp off coolant hoses on water valve. See 64 0... DISCONNECTING A WATER HOSE .

Recycling

Coolant emerges when coolant lines are detached. Have a suitable collecting vessel ready.

Catch and dispose of escaping coolant.

Observe country-specific waste disposal regulations.

Necessary preliminary tasks:

N54 only:

Remove both blow-off valves

Only N63/S63:

Remove intake silencer housing . See 13 71 030 REMOVING AND INSTALLING/REPLACING BOTH INTAKE FILTER HOUSINGS (N63)
Remove COOLANT EXPANSION TANK

NOTE: Engine is shown removed for purposes of clarity.

Disconnect plug connection (1).

Release hose clamps (2, 3) and detach coolant hoses.

Installation note:

Do not mix up connections of coolant hoses.

Replace damaged coolant hoses.

Fig 1: Identifying Hose Clamps With Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

To avoid the buildup of noise, make sure that the rubber mounts (1) on the water valve are securely seated in the mounting on the frame side member (2).

Fig 2: Identifying Rubber Mounts On Water Valve

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Fill and vent cooling system and check for leaks. See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (N63) , 17 00 008 DRAINING AND ADDING COOLANT IN RADIATOR (N62TU, N63) , 17 00 005 DRAINING AND ADDING COOLANT (M57T2) or 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (M57TU, M57T2) .