11 53 000 Removing and installing/replacing coolant thermostat (S63)

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.

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

Recycling:

Catch and dispose of drained coolant in a suitable container.

Observe country-specific waste disposal regulations.

Necessary preliminary tasks:

Remove COOLANT PUMP .

Unlock plug connection (1) and pull off.

Unlock and detach coolant hose (2).

Unfasten nut.

Loosen screws.

Tightening torque 11 53 1AZ .

Remove coolant thermostat (3).

Fig 1: Identifying Plug Connection, Coolant Hose And Coolant Thermostat

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: The coolant thermostat is integrated in the housing cap and can only be replaced as a complete unit.

Clean sealing surfaces.

Installation note:

Replace sealing ring (1) .

Fig 2: Identifying Sealing Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Top up COOLANT .

VENT cooling system and check for WATER LEAKS .