17 11 100 Removing And Installing/Replacing Coolant Expansion Tank (S63 B44 T 0)

WARNING: This page does not describe the selected car, but rather 50 other vehicles, including the 2016 BMW M5, 2016 BMW ActiveHybrid 5, 2016 BMW 550i xDrive, 2016 BMW 550i, and 2016 BMW 535i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Drain COOLANT .
Remove front left WHEEL ARCH COVER (REAR SECTION) .

Release screws (1).

Tightening torque: 17 10 2AZ .

Unlock connector (1) on coolant level switch and disconnect.

Fig 1: Connector On Coolant Level Switch And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Pull expansion tank (1) forward.

Release and disconnect coolant hoses (2).

Unlock and disconnect coolant hoses (3).

Feed expansion tank (1) forward and remove.

Fig 2: Pulling Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Top up COOLANT .

Check cooling system for LEAK TIGHTNESS .