Mercedes-Benz GLK350 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

(160)

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

(160)

Car Thermostat Replacement Estimate for Mercedes-Benz GLK350

Mercedes-Benz GLK350 Car Thermostat Replacement costs $462 on average.

CarServiceEstimateShop/Dealer Price
2013 Mercedes-Benz GLK350V6-3.5LService typeCar Thermostat ReplacementEstimate$828.64Shop/Dealer Price$1039.41 - $1572.49
2011 Mercedes-Benz GLK350V6-3.5LService typeCar Thermostat ReplacementEstimate$687.00Shop/Dealer Price$861.88 - $1298.48
2010 Mercedes-Benz GLK350V6-3.5LService typeCar Thermostat ReplacementEstimate$687.00Shop/Dealer Price$861.87 - $1298.47
2015 Mercedes-Benz GLK350V6-3.5LService typeCar Thermostat ReplacementEstimate$810.64Shop/Dealer Price$1016.35 - $1545.63
2014 Mercedes-Benz GLK350V6-3.5LService typeCar Thermostat ReplacementEstimate$810.64Shop/Dealer Price$1016.47 - $1545.84
2012 Mercedes-Benz GLK350V6-3.5LService typeCar Thermostat ReplacementEstimate$687.00Shop/Dealer Price$861.87 - $1298.47
Show example Mercedes-Benz GLK350 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.

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

(160)

Rating Summary
152
5
1
0
2
152
5
1
0
2

Rusty

23 years of experience
465 reviews
Rusty
23 years of experience
Mercedes-Benz GLK350 V6-3.5L - Auxiliary Battery Replacement - Arlington, Texas
Good communication provided

James

30 years of experience
777 reviews
James
30 years of experience
Mercedes-Benz GLK350 V6-3.5L - Oil Change - Kissimmee, Florida
Very professional

James

30 years of experience
777 reviews
James
30 years of experience
Mercedes-Benz GLK350 V6-3.5L - Car is overheating - Orlando, Florida
James is indeed an asset to your company...friendly and very knowledgeable...I will be asking for him for all future work....

Jimmi

27 years of experience
170 reviews
Jimmi
27 years of experience
Mercedes-Benz GLK350 V6-3.5L - Spark Plugs - Oviedo, Florida
Very reliable, on time and very professional. Already setting up my next appt with him.

Excellent Rating

(160)

Rating Summary
152
5
1
0
2
152
5
1
0
2
Number of Mercedes-Benz GLK350 services completed
1760+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1000+
experts on our platform

Recent articles & questions

P0784 OBD-II Trouble Code: 4-5 Shift Malfunction
P0784 means that a malfunction in the 4-5 shift function was detected due to a faulty PCM, TCM or solenoid, low or dirty fluid.
P0175 OBD-II Trouble Code: P0175 System Too Rich (Bank 2)
P0175 code definition P0175 System Too Rich (Bank 2) What the P0175 code means P0175 indicates that the Engine Control Module (ECM)...
P2639 OBD-II Trouble Code: Torque Management Feedback Signal A Low
P2639 means a issue with one of the supporting control modules which may include transmission control module or fuel injection control module.

Oil leaking from car.

We need to determine in what area of the car the oil leak is coming from. If it's in front of the motor it could be a front main seal or camshaft seal. If it's near the rear of the...

Car is having problems starting in morning

You will need to have the fuel pressure checked with a gauge when the vehicle is first started to see if there is pressure at the injectors or the pressure drops off after key is off. This is an indication...

I have a 2005 Chevrolet Uplander, the radiator, water pump, coolant sensor and thermostat have been replaced. It still overheats w

You need to verify if the electrical cooling fan is coming on when the temperature gets up to or above normal range. if fan does not come on then this is the cause of the overheating and will need to...

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 (855) 347-2779 · hi@yourmechanic.com