17 11 100 Removing and installing/replacing coolant expansion tank (N62TU, N52K, N54, N55)

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.

IMPORTANT: Risk of scalding!
Only perform this repair work after engine has cooled down.

Necessary preliminary work:

Follow NOTES FOR CARRYING OUT REPAIR WORK on the cooling system.
Drain coolant . See 17 00 005 DRAINING AND ADDING COOLANT (N54, N55) from radiator down to lower edge on expansion tank.

Unlock and detach coolant hose (1).

Release screws.

Tightening torque: 17 10 2AZ .

Raise coolant expansion tank (2) until connector for coolant level switch and lower coolant hose are accessible.

Installation note:

Make sure expansion tank is in correct installation position.

Fig 1: Locating Coolant Expansion Tank Screw
Courtesy of BMW OF NORTH AMERICA, INC.

Unlock connector (1) and remove.

Unlock and detach lower coolant hose (2).

Remove expansion tank (3).

Fig 2: Identifying Connector, Lower Coolant Hose And Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.