17 11 100 Removing and Installing/Replacing Coolant Expansion Tank (N73)

WARNING: This page is about a different car, the 2008 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Danger of scalding!

Only carry out work on cooling system after engine has cooled down.

Recycling:

Catch and dispose of drained coolant.

Observe country-specific waste-disposal regulations.

Necessary preliminary tasks:

Drain coolant. See 17 00 005 DRAINING AND ADDING COOLANT (N73)

Disconnect connector (1).

NOTE: Illustrations show air cleaner housing removed.

Fig 1: Identifying Connector

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and disconnect coolant hoses (2) and (3).

Release screws (1).

Remove coolant tank (6) in direction of arrow.

Unlock and disconnect coolant hose (4) with tank (6) released.

Installation:

Make sure rubber grommet (5) is in correct installation position.

Fig 2: Identifying Coolant Tank Components

Courtesy of BMW OF NORTH AMERICA, INC.

Adding coolant:

Vent cooling system and check for leaks. See 17 00 009 CHECKING COOLING SYSTEM FOR LEAKS (N73) .