Mercedes-Benz 300SDL Car Thermostat Replacement at your home or office.

Our certified mechanics come to you・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Logo-yelp
CUSTOMERS LOVE US ON YELP
4.5 out of 5 (550 reviews)
Icon-warranty_badge-02
SERVICES BACKED BY OUR
12-Month, 12,000-Mile Warranty
How does YourMechanic work?    
Icon-quote-hiw
Get a quote

Choose from 600+ repair, maintenance, and diagnostic services, backed by our 12-month, 12,000-mile warranty.

Icon-calendar-hiw
Book an appointment

Tell us when to meet you at your home or office. We’ll send one of our vetted, top-rated mechanics.

Icon-fixed-hiw
Get your car fixed

Continue with your day while our mechanic fixes your car onsite. You pay only after the job is done.

Car Thermostat Replacement Estimate for Mercedes-Benz 300SDL

Mercedes-Benz 300SDL Car Thermostat Replacement costs $110 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$110 to $120
Labor: $70 -$80
Parts: $40
Average Dealer price
$173
Average Shop price
$133
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1987 Mercedes-Benz 300SDLL6-3.0L Turbo DieselService typeCar Thermostat ReplacementYourMechanic Price$150.22Shop/Dealer Price$195.69 - $274.91
1986 Mercedes-Benz 300SDLL6-3.0L Turbo DieselService typeCar Thermostat ReplacementYourMechanic Price$150.22Shop/Dealer Price$195.81 - $275.12
Show example Mercedes-Benz 300SDL Car Thermostat Replacement prices

Car Thermostat Replacement Service & Cost

What is the Thermostat all about?

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.

Thermostat

Keep in mind:

  • The entire cooling system should be inspected when the thermostat is replaced.
  • When the thermostat is replaced, the gaskets and housings should be cleaned thoroughly.

How it's done:

  • Scan the computer in the car for codes.
  • Verify that the car is overheating.
  • Remove and replace thermostat if it is faulty.
  • Clean old gasket surfaces.
  • Remove corrosion from housings/hose connections.
  • Fill cooling system.
  • Check for leaks and proper operating temperatures.

Our recommendation:

Have the thermostat replaced anytime you have major work done on the coolant system.

What common symptoms indicate you may need to replace the Thermostat?

  • Engine overheats.
  • Car heater does not work.
  • Check Engine light is on.

How important is this service?

A vehicle’s engine gets extremely hot, and in order to avoid overheating, it needs to be properly cooled. The engine is cooled by a viscous liquid called coolant. The coolant is circulated around the engine, where it absorbs heat, which allows the engine to remain at a safe temperature. A fan then lowers the temperature of the coolant, which allows it to run back through the engine once more. The thermostat is responsible for determining when the coolant needs to enter the engine. The thermostat determines the temperature of the engine, and then acts as a valve that allows coolant in, or keeps coolant out. When the engine is too cold, the thermostat keeps coolant out; when the engine is too hot, it lets coolant in.

When the thermostat stops working, it will either get stuck open or closed. If the thermostat is stuck open, the coolant will constantly flow through the engine, absorbing too much heat, and the engine will never reach optimal running temperature. If the thermostat is stuck closed, the coolant will never circulate through the engine, and your engine will quickly overheat, which can cause severe damage.

Fast and easy Car Thermostat Replacement service at your home or office.

GET A QUOTE FOR YOUR CAR
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.

828 reviews
Chris
18 years of experience
5 stars are not enough to rate Chris. He arrived on time, extremely knowledgeable, patient with my curiosity, polite answering all my questions, thorough and detailed in his work and, overall, impressive. I've been to endless auto shops and mechanics which either resulted in temporary or partial satisfaction, or even disappointment. This was my experience today with Yourmechanic.com, and, in particular, with Chris Allshouse: I made an appointment for half dozen (or so) misc inspection services for $200 to find out any and all possible issues that needed to be fixed - which Chris pointed out and explained (to a person who knows basically nothing about cars) in layman's terms. He first mentioned I needed new battery and some random fuses/etc as well as tune-up in near future (after I put some more miles on car). Of course my first worry and response was how much more will this cost me, but was delightfully surprised and immediately told not to worry because when I (a customer) pays for "inspection" service appointment, that money is credited toward any future repairs/work done on my car - LOVED IT! I only had to pay few dollars more to get some work done, new battery with install, fuses and more!! As for the tune-up, Chris explained each little thing needed in regards to the tune-up rather than just telling me I need a "tune-up" which could mean I needed a bunch of things done (that are most likely not even necessary). To sum up my review, and end my rambling, I randomly stumbled upon Yourmechanic.com a long time ago. I think It took me two years, maybe even more, to finally drop my skepticism and make an appointment with Yourmechanic.com, yet, because of Chris Allshouse, it took less than a minute to feel confident and excited to set up follow up appointment (as well as request to service my other car). Chris was very personable and easy to talk to. He was very informative and took the time to explain everything to me. I highly recommend him. For the first time, the results were different and with only one afterthought…What took me so long to make this decision!
2004 MERCEDES-BENZ CLK500 - BRAKES, STEERING AND SUSPENSION INSPECTION
659 reviews
Patrick
29 years of experience
My GO TO GUY - HIGHLY RECOMMENDED
2005 MERCEDES-BENZ C230 - RESCHEDULED
449 reviews
Dan
35 years of experience
Good Guy!!!
1999 MERCEDES-BENZ ML320 - CAR IS NOT STARTING INSPECTION
157 reviews
Rusty
19 years of experience
Good
2005 MERCEDES-BENZ C230 - FOG OR DRIVING LIGHTS ARE NOT WORKING INSPECTION
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1987 Mercedes-Benz 300SDLL6-3.0L Turbo DieselService typeCar Thermostat ReplacementYourMechanic Price$150.22Shop/Dealer Price$195.69 - $274.91
1986 Mercedes-Benz 300SDLL6-3.0L Turbo DieselService typeCar Thermostat ReplacementYourMechanic Price$150.22Shop/Dealer Price$195.81 - $275.12
Show example Mercedes-Benz 300SDL Car Thermostat Replacement prices

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.

1-800-701-6230 · hi@yourmechanic.com