61 31 382 Replacing Level Switch For Coolant

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

Release screws (1).

Pull expansion tank (2) in direction of arrow out of grommet (3) underneath and place to one side.

Installation:

Make sure expansion tank (2) is correctly seated in grommet (3).

If necessary, replace grommet (3).

Disconnect plug connection (4).

Fig 1: Identifying Expansion Tank, Grommet And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For purposes of clarity, illustration shows expansion tank (2) removed.

IMPORTANT: Do not damage connected water hoses.
Reposition expansion tank as far as possible until coolant level switch (2) forms the highest point. This will prevent coolant from escaping on opening.
If necessary, catch escaping coolant and feed back in later.

Fig 2: Identifying Coolant Level Switch

Courtesy of BMW OF NORTH AMERICA, INC.

Turn coolant level switch (1) in direction of arrow, pull downwards out of expansion tank (2) and remove.