11 53 000 Removing and installing/replacing coolant thermostat (N74)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2016 BMW 760Li, 2015 BMW 760Li, 2014 BMW 760Li, 2013 BMW 760Li, and 2012 BMW 760Li. 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:

Drain COOLANT
REMOVE FRONT UNDERBODY PROTECTION .
Remove REAR UNDERBODY PROTECTION
Remove STIFFENING PLATE
Remove FAN COWL with electric fan
REMOVE CHARGE AIR COOLER EXPANSION TANK .

NOTE: For purposes of clarity, the graphic shows the auxiliary water pump removed.

Disconnect plug connection (3).

Installation note:

Plug connection (3) must snap audibly into place!

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

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock snap fastener on coolant hose (2).

Detach coolant hose (2) and lay to one side.

NOTE: One of the screws is not shown and is located at the rear under the coolant thermostat (1).

Release screws (4).

Tightening torque: see 1AZ in 11 53 THERMOSTAT AND CONNECTIONS

Lift out coolant thermostat (1).

Clean sealing surface.

Installation note:

Replace sealing ring (1) .

Fig 2: Identifying Coolant Thermostat Sealing Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Top up COOLANT .

VENTING INSTRUCTIONS must be observed without fail .