Thermostat Replacement Estimate for Mercedes-Benz S450

Mercedes-Benz S450 Thermostat Replacement costs $264 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$264 to $282
Labor: $126 -$144
Parts: $138
Average Dealer price
$443
Average Shop price
$322
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CarServiceYourMechanic PriceShop/Dealer Price
2009 Mercedes-Benz S450V8-4.6LService typeThermostat ReplacementYourMechanic Price$274.85Shop/Dealer Price$357.81 - $503.75
Show example Mercedes-Benz S450 Thermostat Replacement prices
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Parts required for a Mercedes-Benz S450 Thermostat Replacement

Thermostat
$122
Thermostat Gasket
$3

Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

133 reviews
Alex
11 years of experience
Alex was very professional and did a great job fixing the car within the specified time.
1999 MERCEDES-BENZ E320 - CRANKSHAFT POSITION SENSOR REPLACEMENT
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132 reviews
Rodney
31 years of experience
Nice man and knowledgeable about his job. I would love to have him back again to do my repairs.
2006 MERCEDES-BENZ ML500 - CRANKSHAFT POSITION SENSOR REPLACEMENT
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75 reviews
Brikk
13 years of experience
Normally I do not confess to auto techs that I spent 40 years as a GM Service Manager and Service Advisor. BUT, Brikk was so pleasant and likable, our conversation was that of cars. He not only fixed my problem, but was sure to check other items on my car that I had not complained about. As I always tell everyone, there is but one thing that surpasses great customer service, and that is MORE of it...Thank you Brikk for a job well done, and if I ever need your service again, consider your phone ringing...Thanks
2007 MERCEDES-BENZ S550 - CHECK ENGINE LIGHT IS ON INSPECTION
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50 reviews
Matthew
6 years of experience
Matthew was very quick in determining the problem and even quicker fixing it. Arrived early and was great to deal with.
2001 MERCEDES-BENZ SLK230 - BRAKE LIGHT SWITCH REPLACEMENT
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All about Thermostat Replacement

A thermostat is part of the cooling system that regulates the temperature of the coolant in the engine. The thermostat is a metal valve that has a temperature sensor built in. It can either be open or closed. When the thermostat is closed, it keeps the coolant in the engine. When the engine gets to a predetermined temperature, the thermostat opens allowing coolant to circulate. The circulation of coolant prevents the engine from overheating. If the thermostat fails to open, the car will overheat. If the thermostat fails to close, the engine may never reach the optimal temperature (~220F). The thermostat opens and closes many times when the car engine is running. It is the most common component in the cooling system to fail, causing the car to overheat.

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