17 11 100 Removing and installing/replacing coolant expansion tank (S65)
WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary tasks:
- Drain coolant from radiator
Unlock coolant hoses and detach.
Release screws.
Raise expansion tank slightly until plugs on coolant level switch and lower coolant hose are accessible.
Unlock plugs on coolant level switch and lower coolant hose and disconnect.
Remove coolant expansion tank.
Installation:
Insert locating pin in rubber grommet.
Vent cooling system and check for leaks.