Removing the coolant thermostat
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Hot surfaces
.
Risk of burning!
Risk of burning!
- Perform all work only on components that have cooled down.
WARNING:
Hot fluids
.
Risk of scalding!
Risk of scalding!
- Conduct all work in the vehicle wearing appropriate personal protective equipment only.
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Preliminary work
- Refer to REMOVING THE FRONT-END STRUT .
- Refer to REMOVING THE LEFT INTAKE FILTER HOUSING (FRONT-END STRUT REMOVED) .
- Refer to REMOVING THE RIGHT INTAKE FILTER HOUSING (FRONT-END STRUT REMOVED) .
- Refer to REMOVING THE CLEAN AIR PIPE FOR CYLINDERS 1 TO 3 .
- Refer to REMOVING SEAL FOR FRONT HOOD .
- Refer to REMOVING THE COVER FOR THE CENTER ENGINE COMPARTMENT .
- Refer to REMOVING UPPER CROSS CONNECTION .
- Refer to REMOVING THE REAR TOP CROSS CONNECTION .
- Refer to REMOVING THE FRONT SPOILER .
- Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
- Refer to REMOVING THE LEFT AND RIGHT FRONT UNDERSHIELD .
- Refer to REMOVING THRUST FIELD .
- Refer to REMOVING THE RIGHT HAND FRONT BOTTOM SIDE COVER .
- Refer to DRAINING THE COOLANT FOR THE HIGH-TEMPERATURE COOLANT CIRCUIT .
- Refer to CONNECTING THE COOLANT LINE TO THE RADIATOR .
- Refer to REMOVING THE FAN COWL .
- Refer to REMOVING THE CHARGE AIR DUCT FOR CYLINDERS 1-3 .
- Refer to REMOVING THE CHARGE AIR DUCT FOR CYLINDERS 4-6 .
- Refer to REMOVING THE CHARGE AIR CROSSING .
- Refer to REMOVING THE DRIVE BELT FOR ALTERNATOR .
- Refer to PARTIALLY RELEASING THE AUXILIARY COOLANT PUMP FOR THE EXHAUST TURBOCHARGER .
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
- Unlock plug connection (1)
and disconnect.
- Unlock and release the coolant line (1) .
- Catch and dispose of escaping coolant.
- Loosen screws (1) .
- Feed out the coolant thermostat (2) and remove it.
- Catch and dispose of escaping coolant.