61 31 382 Replacing coolant level switch
WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Danger of scalding!
Only perform this work after engine has cooled down.
Unlock plug connection (1) on level switch (2) and disconnect.
Turn level switch (2) in direction of arrow and pull out of coolant expansion tank (3).
Courtesy of BMW OF NORTH AMERICA, INC.