Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Replace the Thermostat on a BMW 3 Series

Model: BMW Serie 3 E46 - Years: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
Part: Thermostat

See other generations:
Video tutorial

Replace the damaged thermostat on a BMW 3 Series. Open the hood where the engine is located.

Remove the bolts on the thermostat housing cap (use a socket wrench with the appropriate sockets), take off the covering plastics, and remove the radiator fan (as shown in the video). Pull off the cap and extract the coolant thermostat from its housing.

Once the part is removed, replace it with a new one, close the housing with the cap, and tighten the bolts securely with all its parts. Ensure that the thermostat valve is correctly inserted and mounted in the appropriate housing.

Reinstall the radiator fan.


Updated on 16 March 2026 by ScegliAuto


Related tutorials

How to Replace the Thermostat in a BMW 3 Series?
How to Replace the Thermostat in a BMW 3 Series?
BMW Serie 3 (1998-2006 / E46) In this tutorial, you will see how to replace the thermostat in a BMW 3 Series E46. First, remove the plastic engine cover by loosening the 5 screws.…
How to Replace the Thermostat on a BMW 3 Series?
How to Replace the Thermostat on a BMW 3 Series?
BMW Serie 3 (2005-2013 / E92, E90, E91) To replace the thermostat on a BMW 3 Series, lift the car to access the underside. First, disconnect all hoses connected to the part, removing any re…
How to Replace the EGR Thermostat on a BMW 320d
How to Replace the EGR Thermostat on a BMW 320d
BMW Serie 3 (2005-2013 / E92, E90, E91) Is the thermostat on your BMW 320d malfunctioning? No problem, today you will learn how to replace it. Once you have the new thermostat, you can star…

Other guides you may be interested in

How to Reset the Tyre Pressure Warning Light on the Jeep Renegade?

To reset the tyre pressure warning light on the Jeep Renegade, inflate the tyres until they reach the recommended pressure: this value is indicated on the sticker attached to the driver’s door pillar. Once the tyres are properly inflated, navigate through the menu that appears on the instrument cluster until you find the tyre pressure option. At this point, press and hold the OK button on the right side of the steering wheel to make the warning light disappear.

Watch the video!


by ScegliAuto

More videos