Mercedes-Benz CL500 Car Thermostat Replacement at your home or office.

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$218.54 - $304.62

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Car Thermostat Replacement Estimate for Mercedes-Benz CL500

Mercedes-Benz CL500 Car Thermostat Replacement costs $278 on average.

CarServiceEstimateShop/Dealer Price
1999 Mercedes-Benz CL500V8-5.0LService typeCar Thermostat ReplacementEstimate$354.59Shop/Dealer Price$442.55 - $655.38
2000 Mercedes-Benz CL500V8-5.0LService typeCar Thermostat ReplacementEstimate$438.26Shop/Dealer Price$546.88 - $788.82
2001 Mercedes-Benz CL500V8-5.0LService typeCar Thermostat ReplacementEstimate$447.26Shop/Dealer Price$553.62 - $793.85
2002 Mercedes-Benz CL500V8-5.0LService typeCar Thermostat ReplacementEstimate$438.26Shop/Dealer Price$552.18 - $798.08
2006 Mercedes-Benz CL500V8-5.0LService typeCar Thermostat ReplacementEstimate$426.18Shop/Dealer Price$527.93 - $757.92
2005 Mercedes-Benz CL500V8-5.0LService typeCar Thermostat ReplacementEstimate$435.18Shop/Dealer Price$535.77 - $764.88
2003 Mercedes-Benz CL500V8-5.0LService typeCar Thermostat ReplacementEstimate$435.18Shop/Dealer Price$536.26 - $765.74
1998 Mercedes-Benz CL500V8-5.0LService typeCar Thermostat ReplacementEstimate$354.59Shop/Dealer Price$441.37 - $653.32
Show example Mercedes-Benz CL500 Car Thermostat Replacement prices

Car Thermostat Replacement Service

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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Excellent Rating


YourMechanic Mercedes-Benz CL500 Service

Average Rating

4.7/5

Number of Reviews

18

Rating Summary
16
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Robert

13 years of experience
4 reviews
Robert
13 years of experience
Mercedes-Benz CL500 - Radiator - Houston, Texas
If you read nothing beyond this first sentence, just know that Robert is magnificent! On my repair day, Robert showed up promptly at the requested appointment time, sending several heads-up texts prior to his visit. Upon arrival, he very kindly and pleasantly introduced himself, then immediately proceeded to review the requested service and closely inspected the vehicle before bringing out his heavy duty tools. Radiator replacement can be tricky, but Robert tackled it with ease and with a highly professional methodology which can only come from longtime mechanical knowledge and experience. Not only was Robert careful to keep the job site clean and orderly, but he also took delicate care in disassembling components in and around the engine. Once the radiator was successfully replaced and the coolant levels and functionality restored to factory specs, Robert went above and beyond by scanning the vehicle computer for any fault codes, etc. He diagnosed a misfire and tested some ignition components, after which he very kindly suggested what needed to be repaired in the near future. Overall, I will gladly admit that I am very satisfied with the repair work received by Robert. I cannot thank him and YourMechanic enough, as the service received was excellent, affordable, precise, professional and highly convenient. I would highly recommend Robert as a mechanic, as his knowledge, insights, technique and professionalism are without equal.

Theodore

15 years of experience
1256 reviews
Theodore
15 years of experience
Mercedes-Benz CL500 - Brake Pads Replacement (Front) - Woodinville, Washington
Outstanding professional. Knowledgeable and service minded.

David

15 years of experience
622 reviews
David
15 years of experience
Mercedes-Benz CL500 - Power steering fluid is leaking - Pittsburg, California
Very respectful,honest,and highly experienced,and professional,5 

Breck

19 years of experience
681 reviews
Breck
19 years of experience
Mercedes-Benz CL500 - Brake System Flush - Houston, Texas
Breck was an absolute professional. He performed the brake job quickly, thoroughly, and meticulously. Very happy with the results. Highly recommended A+

Excellent Rating


YourMechanic Mercedes-Benz CL500 Service

Average Rating

4.7/5

Number of Reviews

18

Rating Summary
16
1
0
0
1
16
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1
Number of Mercedes-Benz CL500 services completed
198+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
900+
experts on our platform

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