Subaru Impreza 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 Subaru Impreza Coolant Temperature Switch (Sensor) Replacement is $105 with $10 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1996 Subaru ImprezaH4-2.2LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$207.87Shop/Dealer Price$239.22 - $308.50
2014 Subaru ImprezaH4-2.0LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$180.75Shop/Dealer Price$212.21 - $284.04
2011 Subaru ImprezaH4-2.5LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$168.17Shop/Dealer Price$195.11 - $251.13
2009 Subaru ImprezaH4-2.5L TurboService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$168.17Shop/Dealer Price$195.08 - $251.09
2004 Subaru ImprezaH4-2.0L TurboService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$191.25Shop/Dealer Price$223.98 - $297.32
2000 Subaru ImprezaH4-2.5LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$191.25Shop/Dealer Price$223.96 - $297.29
2000 Subaru ImprezaH4-2.2LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$196.75Shop/Dealer Price$229.31 - $302.53
2001 Subaru ImprezaH4-2.2LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$196.75Shop/Dealer Price$229.72 - $303.25
Show example Subaru Impreza 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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Excellent Rating

(416)

Rating Summary
397
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3
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5
397
9
3
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5

Alfred

13 years of experience
501 reviews
Alfred
13 years of experience
Subaru Impreza H4-2.5L - Coolant Temperature Switch (Sensor) - San Francisco, California
alfred did super great and professional work! he arrived on time, was able to figure out what was wrong with the car, and fixed it

Chris

15 years of experience
312 reviews
Chris
15 years of experience
Subaru Impreza H4-2.5L - Car is shaking or vibrating Inspection - National City, California
Very knowledgeable on the car.

Kirk

31 years of experience
54 reviews
Kirk
31 years of experience
Subaru Impreza H4-2.5L - Timing Belt - Oakland, California

Chris

20 years of experience
448 reviews
Chris
20 years of experience
Subaru Impreza H4-2.2L - Knock Sensor - Vancouver, Washington
Chris was great! There was a mix up in time and place and Chris made it work. He was efficient and quick and even recommended further car care that will be needed in the near future.

Excellent Rating

(416)

Rating Summary
397
9
3
2
5
397
9
3
2
5
Number of Subaru Impreza services completed
4576+
services done by our mechanics
TOTAL NUMBER OF EXPERT Subaru MECHANICS
700+
experts on our platform

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