17 11 100 Removing and installing/replacing coolant expansion tank (M54, N52)
WARNING: This page is about a different car, the 2005 BMW 530i, 2005 BMW 525i, 2004 BMW 530i, and 2004 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary tasks:
- Drain coolant from radiator
Release and disconnect coolant hoses (1).
Unlock plug on coolant level switch and disconnect.
Unfasten screws.
Remove coolant expansion tank (2).
Installation:
Insert locating pin in rubber grommet.
Check cooling system for leaks.