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

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:

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.