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Coolant Temperature Sending Unit Switch Connector

Critical For Operation

Cooling System

Connects the coolant temperature sending unit to the vehicle’s wiring harness.

This connector links the coolant temperature sending unit to the wiring system, allowing it to communicate coolant temperature data to the vehicle’s ECU or gauge.

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Typical part cost
$10–$30🔒
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Typical labor cost
$50–$100🔒
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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
3/10

⚠️ Owners Often Notice

If the Coolant Temperature Sending Unit Switch Connector is starting to fail, these are the signs owners most commonly report before it gets worse:

Check engine light
Temperature gauge not working
Overheating warning
Electrical issues
Blown fuses
Poor cooling performance

Related Services

Services commonly performed on or around this part.

Replace Coolant Temperature Sending Unit Switch Connector

No standard interval on file

Inspect Coolant Temperature Sending Unit Switch Connector

No standard interval on file

Test Coolant Temperature Sending Unit Switch Connector

No standard interval on file