OEM Mercedes-Benz Thermostats

The thermostat is typically located where the coolant leaves the top of the engine, just below the upper radiator hose. When your engine is cold, the thermostat remains closed so no additional coolant gets through. If your engine needs additional coolant because it's getting too warm, it will open and allow the flow once again. The thermostat is an important part contributing to the operation of your vehicle's engine, and therefore, is crucial to maintain. Your thermostat has to be able to open and close at proper times so your engine can maintain a proper temperature. If your thermostat becomes "stuck" open or closed, a whole host of problems can occur. You might start to experience high temperature readings and overheating of the engine. If your Mercedes' temperature is spiking within the first 15 minutes of your vehicle running, this can be a sign your thermostat is not functioning properly. You could also experience the opposite in the form of a low temperature reading. If the needle barely moves and remains at one of the lower settings, you could have a problem on this end as well. Make sure you invest in OEM thermostats that will fit the model of your Mercedes.