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

WARNING: This page is about a different variant/trim than selected.

WARNING: Risk of scalding!
Only perform these tasks on an engine that has cooled down.
Danger of injury!
Risk of skidding due to coolant on the floor.

Recycling

Catch and dispose of drained coolant in a suitable collecting vessel.

Observe country-specific waste disposal regulations.

IMPORTANT: Read and comply with GENERAL NOTES .
Protect plug connections against coolant and dirt contamination.
Cover plug connections with suitable materials.

Necessary preliminary work:

Remove FRONT UNDERBODY PROTECTION
Release ANTI-ROLL BAR ON FRONT AXLE(E89 only)
Remove FAN COWL(only E89, E70)

NOTE: E89 only

Release screws (1) (only on front axle support)

Tightening torque 17 10 5AZ .

Fig 1: Identifying Screws On Front Axle Support

G06904422

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Illustration shows coolant thermostat removed.

Disconnect coolant hoses (arrows) on the thermostat (1) with clamping tongs.

Fig 2: Locating Coolant Hoses On Thermostat

G06904423

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For a better overview, the picture and text refer to the component when removed.

Unfasten hose clamp (1).

Tightening torque 11 53 5AZ .

Remove coolant hose.

Unfasten hose clamp (2).

Tightening torque 11 53 6AZ .

Remove coolant hose.

Unlock and detach coolant hose (3).

Unlock and detach coolant hose (4).

Fig 3: Identifying Coolant Thermostat, Hose Clamps, Coolant Hoses And Screws

G04751267

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (5).

Release screws (6).

Tightening torque 11 53 1AZ .

Remove coolant thermostat (7).

Assemble engine.

FILL THE COOLING SYSTEM .

CHECK THE COOLING SYSTEM FOR TIGHTNESS AND FUNCTION.