Coolant Temperature Switch (Sensor) Replacement at your home or office.

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

It depends on the type of car you drive and the auto repair shop you go to. Our mechanics are mobile, which means they don't have the overhead that repair shops have. They provide you convenience by coming to your home or office.

Car Labor Cost Parts Cost Estimate Average Dealer Price Savings
2002 Chevrolet Silverado 1500 $70.00 $25.99 $96 $133.49 28%
2006 GMC Savana 2500 $280.00 $35.95 $316 $465.95 32%
2008 Volkswagen Touareg $70.00 $21.86 $92 $129.36 28%
2007 Chevrolet Equinox $77.00 $18.54 $96 $136.79 30%
2009 Chevrolet Express 2500 $70.00 $25.99 $96 $133.49 28%
2002 Audi A8 Quattro $105.00 $14.12 $119 $175.37 32%
2008 Mercedes-Benz E550 $98.00 $35.98 $134 $186.48 28%
2009 Audi A8 Quattro $126.00 $14.38 $140 $207.88 32%
2003 Dodge Viper $231.00 $30.83 $262 $385.58 32%
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Coolant Temperature Switch (Sensor) Replacement Service

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.

Fast and easy Coolant Temperature Switch (Sensor) Replacement service at your home or office.

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Kevin showed up ready to do his job and did just that. He showed me a couple important things on my vehicle I had overlooked and was nothing less than incredibly professional, knowledgeable, and informative. I would, without hesitation recommend him to anyone I know and would gladly use him again.



Tom went above and beyond to make me as satisfied as I could be. His communication was excellent. Friendly and professional and best if all, my car is running great and he did it without unnecessary repairs. I would and will highly recommend Tom and Your Mechanic to everyone. Thanks, Rob Miller.



I have to say I am totally satisfied with the service performance and Bernard is quite professional offering details of the work which was completed. I will definitely utilize your service in the future and will recommend to family and friends.

How can we help?

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