11 53 000 Removing and installing/replacing coolant thermostat (N54, N54T)

WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

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 FAN COWL .
Remove front UNDERBODY PROTECTION
Release FRONT STABILIZER on front axle.

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

Tightening torque 17 10 5AZ .

Fig 1: Identifying Screws On Front Axle Support

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

Courtesy of BMW OF NORTH AMERICA, INC.

Release hose clamp (1) and detach coolant hose.

Release hose clamp (2) and detach coolant hose.

Unlock and detach coolant hose (3).

Unlock and detach coolant hose (4).

Disconnect plug connection (5).

Release screws (6).

Tightening torque 11 53 1AZ .

Fig 3: Identifying Hose, Hose Clamp And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Fill the COOLING SYSTEM .

Check function of cooling system.