Mercedes-Benz C220 Car Thermostat Replacement at your home or office.

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Car Thermostat Replacement Service

How much does a Car Thermostat Replacement cost?

On average, the cost for a Mercedes-Benz C220 Car Thermostat Replacement is $195 with $100 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1994 Mercedes-Benz C220L4-2.2LService typeCar Thermostat ReplacementEstimate$315.35Shop/Dealer Price$382.94 - $546.34
1996 Mercedes-Benz C220L4-2.2LService typeCar Thermostat ReplacementEstimate$295.35Shop/Dealer Price$362.97 - $526.39
1995 Mercedes-Benz C220L4-2.2LService typeCar Thermostat ReplacementEstimate$295.35Shop/Dealer Price$362.97 - $526.39
Show example Mercedes-Benz C220 Car Thermostat Replacement prices

What is an engine cooling system thermostat and how does it work?

The car's engine cooling system thermostat is a small valve within a cooling system passageway that opens and closes in response to the temperature of the circulating engine coolant. When your car is first started and the coolant is cold, the valve in the thermostat will be in the closed position, circulating the coolant flow only within the engine instead of flowing to the radiator, which allows the engine to warm up fast, promoting fuel efficiency, low emissions, and reduced engine deposits. Once the engine coolant reaches the design temperature, usually around 195 degrees, the valve will open and close as you drive in order to maintain a coolant temperature typically between 195 to 225 degrees Fahrenheit.

Thermostat

When to consider replacing the engine cooling system thermostat:

  • Engine overheats. A thermostat with the valve stuck closed is a common cause of engine overheating. However, since there are other causes of overheating, a mechanic will thoroughly inspect the cooling system prior to condemning the thermostat. Since it is usually not known how badly the engine overheated, the mechanic will also try to determine if there is evidence that the cylinder head gasket was blown. If so, it would be repaired prior to replacing the thermostat.
  • Temperature gauge reads too low or too high. Thermostats can get sticky, causing the engine temperature to stray from the optimal range. Your dash-mounted temperature gauge will notify you of this malfunction.
  • Cooling system repairs. All thermostats eventually fail. Therefore, if the cooling system is already open for major repairs, such as water pump or radiator replacement, it is recommended to install a new thermostat simply as insurance against future breakdown.

How do mechanics replace the engine cooling system thermostat?

  • Once the engine is completely cold, the radiator cap is loosened and enough coolant is drained from the radiator so the coolant level is below the thermostat housing.
  • The thermostat housing is removed and the thermostat and gasket are extracted. Note that some cars have more than one cooling system thermostat and both might need replacement.
  • All mounting surfaces on the thermostat housing are cleaned of old gasket material. A new gasket is applied and the thermostat is re-installed in the correct orientation and with the temperature sensing cylinder facing downward towards the engine.
  • The thermostat housing bolts are tightened to original equipment manufacturer (OEM) specifications using a calibrated inch-pound torque wrench.
  • The cooling system is refilled with the appropriate coolant type and the system is fully bled of all air.
  • The car engine is run until the normal operating temperature is reached, and while taking precautions with the hot coolant, the coolant level is rechecked while confirming there is flow through the radiator — either visually or with an infrared temperature gun. This will confirm the thermostat is open. Finally, the engine is checked for leaks.

Is it safe to drive with an engine cooling system thermostat problem?

No. If it has been determined that there is a thermostat problem, it should be repaired right away. Failure to do so can cause substantial and costly damage to the engine.

When replacing the engine cooling system thermostat keep in mind:

  • Engine overheating due to causes other than a faulty thermostat, will themselves damage a thermostat. Therefore, always replace the thermostat if the engine overheats, even if the thermostat was not the initial cause of the overheating.
  • The thermostat should be replaced anytime you have major work done on the coolant system. It is convenient and costs little during such repairs and insurance against future breakdown.
  • OEM thermostats are the best ones to use and you can request your mechanic to install only the OEM thermostat. Dealer supplied, OEM thermostats are sometimes more costly but are generally higher quality and specifically engineered for your car.

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Grzegorz

41 years of experience
473 reviews
Grzegorz
41 years of experience
Mercedes-Benz C220 L4-2.2L - Oil Change - San Francisco, California

Stefan

17 years of experience
367 reviews
Stefan
17 years of experience
Mercedes-Benz C220 L4-2.2L - Other Inspections - Concord, California
Stephan provided a professional job both in technical know how but also in customer relations. He is a good representative for the Your Mechanic organization. Would love to have him work with us again.

Stefan

17 years of experience
367 reviews
Stefan
17 years of experience
Mercedes-Benz C220 L4-2.2L - car is locked...key wont turn and steering wheel will not unlock. - Concord, California

Joseph

17 years of experience
91 reviews
Joseph
17 years of experience
Mercedes-Benz C220 L4-2.2L - Clunking or knocking noise from wheels - Johns Island, South Carolina
Very knowledgeable with my European car, started engine and diagnosed problem immediately. Joseph even explained and showed my husband exactly what was causing the noise, and what can be done to solve it. He did not oversell and instead said that noise can be resolved quite easily with the right part and rest of the engine was in very good condition. A 50 point safety check was even performed. Would definitely use this service, and Joseph!

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Number of Mercedes-Benz C220 services completed
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