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Coolant Temperature Sensor/Sender/Switch

Critical For Operation

Cooling System

Measures the temperature of the coolant and sends signals to the gauge or ECU.

The coolant temperature sensor, sender, or switch monitors the temperature of the engine coolant, sending data to the ECU or dashboard gauge for accurate temperature reading.

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Typical part cost
$20–$80🔒
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Typical labor cost
$50–$150🔒
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Typically lasts
80,000–150,000 mi
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Or about
5.0–10.0 years
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DIY difficulty
4/10

⚠️ Owners Often Notice

If the Coolant Temperature Sensor/Sender/Switch is starting to fail, these are the signs owners most commonly report before it gets worse:

Engine overheating
Check engine light
Temperature gauge not working
Poor engine performance
Overheating warning
Poor fuel economy

Related Services

Services commonly performed on or around this part.

Replace Coolant Temperature Sensor/Sender/Switch

No standard interval on file

Inspect Coolant Temperature Sensor/Sender/Switch

No standard interval on file

Test Coolant Temperature Sensor/Sender/Switch

No standard interval on file