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 Mercedes C220 W203

Model: Mercedes Classe C W203 - Years 2000-2007
Part: Thermostat

To replace the thermostat, first drain the engine cooling system. To ensure complete drainage without keeping the system under pressure, start the engine and set the cabin heater to maximum. Then, drain the coolant through the designated valve located under the radiator and locate the thermostat, which is at the front of the engine, next to the engine oil filter. Disconnect the hoses and remove the retaining pins, also taking off the plate behind the auxiliary belt tensioner. After replacing the thermostat, refill the system, making sure to avoid air bubbles.

Updated on 25 February 2026 by ScegliAuto

Video tutorial

Related tutorials

Replacing the Engine Thermostat
Replacing the Engine Thermostat
Mercedes Classe C (2000-2007 / W203) In this video, we show you how to replace the engine thermostat. Replacing the thermostat is necessary when the engine no longer reaches optimal oper…
How to Replace the Air Filter on a Mercedes C220
How to Replace the Air Filter on a Mercedes C220
Mercedes Classe C (2000-2007 / W203) In this new mini guide dedicated to your Mercedes C220, you will learn the detailed steps necessary to correctly replace the engine air filter. Befor…
How to Replace the Interior Rearview Mirror of the Mercedes Benz C220
Mercedes Classe C (2000-2007 / W203) This guide shows how to remove the interior rearview mirror of the Mercedes Benz C220 (W203). The operation does not require specific tools, just som…

Other guides you may be interested in

How to Replace the External Wing Mirror on a Ford C MAX

In the event of a breakage, it will be necessary to replace the external wing mirror on the 2011 Ford C MAX. This operation is easily performed independently. Start by removing the internal cover of the mirror with a plastic lever. Then, use a socket wrench to remove the securing pins. Once the pins are removed, you can take off the mirror, but not before disconnecting the power connectors. Then proceed to fit the new mirror. First, connect the connectors and then secure the mirror to its housing with the pins. Refit the plastic cover and test the operation of the electric mirror using the controls.

Watch the video!


by ScegliAuto

More videos