11 53 000 Removing and installing/replacing coolant thermostat (N52K)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 BMW X5, 2010 BMW X3, 2009 BMW X5, 2009 BMW X3, and 2008 BMW X5. 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.

Recycling

Catch and dispose of drained coolant in a suitable container.

Observe country-specific waste-disposal regulations.

IMPORTANT: Protect plug connections against coolant and contamination.

Cover plug connections with suitable materials.

Necessary preliminary tasks:

Drain Coolant

NOTE: For purposes of clarity, the picture and text refer to the component when removed.

Unfasten hose clip (1).

For tightening torque refer to 11 53 5AZ in 11 53 COOLANT THERMOSTAT WITH CONNECTIONS .

Remove coolant hose.

Unfasten hose clip (2).

For tightening torque refer to 11 53 6AZ in 11 53 COOLANT THERMOSTAT WITH CONNECTIONS .

Remove coolant hose.

Unlock and detach coolant hose (3).

Unlock and detach coolant hose (4).

Disconnect plug connection (5).

Release screws (6).

For tightening torque refer to 11 53 1AZ in 11 53 COOLANT THERMOSTAT WITH CONNECTIONS .

Remove coolant thermostat (7).

Assemble engine.

Fig 1: Hose Clips, Hoses, Screws, Coolant Thermostat And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.