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 Connect the Cables to the Battery of the Citroen Xsara Picasso?

In this tutorial, you will see how to connect the cables to the battery of the Citroen Xsara Picasso, useful if you need to recharge it or perform an emergency start. First, ensure the key is not inserted, then open the bonnet and move to the front of the left headlamp. Next, locate the bolt just behind the filter box and connect the positive terminal clamp to it. Now you can connect the negative terminal to any point on the chassis, such as the indicated point. Once the operation is complete, ensure you disconnect the negative first and then the positive.

Watch the video!


by ScegliAuto

More videos