Mercedes-Benz E55 AMG Car Thermostat Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(22)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(22)

Car Thermostat Replacement Service

How much does a Car Thermostat Replacement cost?

On average, the cost for a Mercedes-Benz E55 AMG Car Thermostat Replacement is $370 with $118 for parts and $252 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2001 Mercedes-Benz E55 AMGV8-5.5LService typeCar Thermostat ReplacementEstimate$514.18Shop/Dealer Price$589.18 - $777.71
2003 Mercedes-Benz E55 AMGV8-5.5L TurboService typeCar Thermostat ReplacementEstimate$497.96Shop/Dealer Price$565.01 - $747.58
2005 Mercedes-Benz E55 AMGV8-5.5L TurboService typeCar Thermostat ReplacementEstimate$497.96Shop/Dealer Price$565.12 - $747.78
2000 Mercedes-Benz E55 AMGV8-5.5LService typeCar Thermostat ReplacementEstimate$497.96Shop/Dealer Price$565.12 - $747.77
2002 Mercedes-Benz E55 AMGV8-5.5LService typeCar Thermostat ReplacementEstimate$497.96Shop/Dealer Price$571.75 - $759.38
2006 Mercedes-Benz E55 AMGV8-5.5L TurboService typeCar Thermostat ReplacementEstimate$497.96Shop/Dealer Price$565.75 - $748.88
2004 Mercedes-Benz E55 AMGV8-5.5L TurboService typeCar Thermostat ReplacementEstimate$497.96Shop/Dealer Price$565.19 - $747.90
1999 Mercedes-Benz E55 AMGV8-5.5LService typeCar Thermostat ReplacementEstimate$497.96Shop/Dealer Price$565.12 - $747.77
Show example Mercedes-Benz E55 AMG 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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(22)

Rating Summary
21
1
0
0
0
21
1
0
0
0

Alfred

14 years of experience
587 reviews
Alfred
14 years of experience
Mercedes-Benz E55 AMG V8-5.5L - Oil Change - Alameda, California
Showed up on time, did a great job!

Jonathan

27 years of experience
88 reviews
Jonathan
27 years of experience
Mercedes-Benz E55 AMG V8-5.5L - Oil/Fluid Leak Inspection - Roswell, Georgia
Very good. Answered all questions.

Pardeep

22 years of experience
1277 reviews
Pardeep
22 years of experience
Mercedes-Benz E55 AMG V8-5.5L Turbo - Radiator - Mountain View, California
Quick, knowledgeable and honest!

Tien

24 years of experience
903 reviews
Tien
24 years of experience
Mercedes-Benz E55 AMG V8-5.5L - Wheel Bearings Replacement (Driver Side Front, Passenger Side Front) - Alameda, California
Excellent service

Excellent Rating

(22)

Rating Summary
21
1
0
0
0
21
1
0
0
0
Number of Mercedes-Benz E55 AMG services completed
242+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

P2273 OBD-II Trouble Code: O2 Sensor Signal Stuck Rich Bank 2 Sensor 2
P2273 P2273 code definition The P2273 diagnostic trouble code is an indication that the Bank 2 Sensor 2 oxygen (O2) sensor signal is stuck on rich. Related Trouble Codes: P2270 OBD-II Trouble Code: O2 Sensor Signal Stuck Lean Bank 1...
How Does the Power Windows Anti-Pinch Safety Feature Work?
Closing your power window is as easy as pressing or pulling on the window switch until your window reaches the...
Is it Safe to Drive With a Wheel Bearing Gone?
Wheel bearings help a car roll smoothly. Bad or missing wheel bearing symptoms include grinding noises, a loose steering wheel, and uneven tire wear.

EGR warning

Hello. An EGR valve that is intermittently failing will cause the Check Engine Light to turn off and on. If the code is for the EGR valve and the voltages to the valve are correct, then the EGR valve may...

2003 Kia Sedona starts and runs for one minute then dies. Restarts and does the same thing. Threw a code the other day of cylinder

Hello. Thank you for writing in. At first the issue sounds like an electrical problem. There are a number of sensors that will cause the engine to stall. Some of them are not monitored by the computer and will not...

Have a 90 mile comute each way own a Hond a odessey any advice? Is thus vehicle reliable?

Hi there. Overall, a Honda Odyssey is a pretty reliable and dependable. In most cases, routine service and maintenance will extend the life of your vehicle significantly. If your car is running rough and depending on the mileage of your...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (844) 997-3624 · hi@yourmechanic.com