17 11 100 Removing And Installing/Replacing Coolant Expansion Tank (S54)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW M3, 2005 BMW M3, 2004 BMW M3, 2003 BMW M3, and 2002 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Danger of scalding! Only perform this work after engine has cooled down.

Follow instructions for working on cooling system. Refer to 17 00 . . . INSTRUCTIONS FOR WORKING ON COOLING SYSTEM. .

Drain off and top up coolant. Refer to 17 00 005 DRAINING OFF AND TOPPING UP COOLANT (S54) .

Release retaining clip (1) and detach vent hose.

Detach overflow hose (2).

Release nut (3).

Unclip filler neck (4) on washer fluid reservoir and place to one side.

Fig 1: Locating Retaining Clip, Vent And Overflow Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Release clip (1).

Detach coolant hose (2).

Disconnect plug connection (3).

Remove coolant expansion tank. Refer to 17 11 100 REMOVING AND INSTALLING/REPLACING COOLANT EXPANSION TANK (S54) .

Installation:

Both guide pins (4) at base of expansion tank must be inserted in rubber mounts.

Fig 2: Identifying Coolant Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.