Coolant Reservoir: Service and Repair

17 11 100 Removing and installing or replacing the coolant expansion tank (N12, N14, N16, N18)

Special tools required:







NOTE: Follow notes for carrying out repair work on the cooling system.







IMPORTANT: Make sure without fail that coolant hoses are correctly routed. Risk of damage due to sharp edges or chafing.







Loosen the spring strap for the hose (1) with special tool 17 2 052 and pull the hose (1) off.
Release screw (2).
Release expansion tank (3) from rubber mount and raise slightly until lower coolant hose is accessible.







Unlock and detach lower coolant hose (1). Catch and dispose of escaping coolant.
Remove expansion tank.

Installation note:
Make sure the bearing journal (2) is installed in the correct installation position in the rubber mount.







NOTE: Check coolant level