17 11 100 Removing and installing/replacing coolant expansion tank (N63)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2014 BMW X6, 2013 BMW X6, 2012 BMW X6, 2011 BMW X6, and 2010 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

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

Necessary preliminary tasks:

Follow instructions for working on cooling system.
Drain coolant from radiator down to lower edge on expansion tank.

Unlock and detach coolant hose (1).

Release screws.

Raise coolant expansion tank (2) slightly until plug for coolant level switch and lower coolant hose are accessible. Unclip line on side of expansion tank.

Installation:

Make sure expansion tank is in correct installation position.

Fig 1: Identifying Coolant Expansion Tank And Coolant Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Unlock and detach lower coolant hose (2).

Remove expansion tank (3).

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

Courtesy of BMW OF NORTH AMERICA, INC.