Mazda MX-5 Miata Coolant Temperature Switch (Sensor) Replacement at your home or office.

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Coolant Temperature Switch (Sensor) Replacement Service

How much does a Coolant Temperature Switch (Sensor) Replacement cost?

On average, the cost for a Mazda MX-5 Miata Coolant Temperature Switch (Sensor) Replacement is $103 with $8 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2010 Mazda MX-5 MiataL4-2.0LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$304.24Shop/Dealer Price$344.68 - $423.26
2014 Mazda MX-5 MiataL4-2.0LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$266.24Shop/Dealer Price$306.72 - $385.31
2015 Mazda MX-5 MiataL4-2.0LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$195.86Shop/Dealer Price$218.74 - $244.55
2018 Mazda MX-5 MiataL4-2.0LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$222.69Shop/Dealer Price$264.61 - $367.88
2011 Mazda MX-5 MiataL4-2.0LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$266.24Shop/Dealer Price$306.74 - $385.36
2008 Mazda MX-5 MiataL4-2.0LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$266.24Shop/Dealer Price$306.71 - $385.31
2017 Mazda MX-5 MiataL4-2.0LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$317.68Shop/Dealer Price$368.38 - $478.24
2016 Mazda MX-5 MiataL4-2.0LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$317.68Shop/Dealer Price$369.09 - $479.48
Show example Mazda MX-5 Miata Coolant Temperature Switch (Sensor) Replacement prices

What is the Coolant Temperature Switch (Sensor) all about?

The coolant temperature switch, also called the coolant temperature sensor, is a switch that reads the engine coolant temperature and sends a signal to the engine control module, or ECM, to control other functions of engine operation such as the air-fuel ratio.

It is also called a switch because on some cars, it is used to turn on the engine cooling fan at a specific temperature. This aids in the engine warm-up process as well as keeping the engine at a safe operating temperature.

Keep in mind:

  • The coolant temperature switch is a crucial part of the cooling system. If faulty, it can cause severe internal engine damage due to overheating, incorrect air-fuel ratio, or incorrect ignition timing. It can also cause shorter life to the cooling fan motor or other electrical components of the cooling system.
  • Some vehicles are equipped with a separate sensor to display the engine temperature to the driver via the temperature gauge.

How it's done:

  • The Coolant Temperature Switch is verified that it needs to be replaced. The coolant is drained until the switch is exposed.

  • The defective Coolant Temperature Switch is removed by disconnecting the connector and removing it from the manifold.

  • The new Coolant Temperature Switch is installed into the mounting hole in the manifold and the electrical connector is reconnected. The coolant is then refilled.

  • The Coolant Temperature Switch is tested for operation, codes cleared, and retested to ensure all codes have been resolved.

  • The vehicle is road tested to ensure proper operation of the Cooling System.

Our recommendation:

If you suspect that your coolant temperature switch has failed, have one of our licensed mechanics come out immediately to diagnose the problem.

What common symptoms indicate you may need to replace the Coolant Temperature Switch (Sensor)?

  • Check Engine light on
  • Engine overheating
  • Cooling fan runs intermittently
  • Engine misfires, stalls, or idles roughly
  • Erratic coolant temperature

How important is this service?

This part, when faulty, could cause the fan to run intermittently or not at all, which in turns causes overheating or overuse of the cooling fan motor. Whenever overheating occurs, severe engine damage is a possibility.

The engine air-fuel ratio is what keeps it running smoothly. If the ratio gets skewed, the engine will have poor fuel economy and run poorly or not at all. The coolant temperature switch is important because it gives the ECM the information it needs to make this calculation and run the engine optimally. YourMechanic will be able to tell you if this part is performing correctly.

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126
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126
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Pierre

9 years of experience
312 reviews
Pierre
9 years of experience
Mazda MX-5 Miata L4-2.0L - Door Mirror Replacement (Driver Side) - Arlington, Massachusetts
Thorough, knowledgable. Walked me through what he did easily.

Damian

11 years of experience
430 reviews
Damian
11 years of experience
Mazda MX-5 Miata L4-2.0L - Pre-purchase Car Inspection - Melbourne, Florida
Very thorough, Damian inspected all areas and then took a test drive to make sure the car was good. Highly recommend!

Mark

11 years of experience
349 reviews
Mark
11 years of experience
Mazda MX-5 Miata L4-2.0L - Car is not starting - Palo Alto, California
Mark was able to get to my car early - I got informative calls so I knew what was happening. The problem with my car was simple and not surprising, and he fixed it quickly with no fuss (and no phony "here's what else I found" surprises).

Rolando

13 years of experience
9 reviews
Rolando
13 years of experience
Mazda MX-5 Miata L4-2.0L - Pre-purchase Car Inspection - Gwynn Oak, Maryland
Worked out great, Rolando was early and thorough

Excellent Rating

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Rating Summary
126
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126
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