Why Is the Hyundai Tucson’s Coolant Temperature Sensor Giving Incorrect Readings?

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Why Is the Hyundai Tucson’s Coolant Temperature Sensor Giving Incorrect Readings?

My Tucson’s temperature gauge sometimes shows overheating o r fluctuates unexpectedly. Could a faulty coolant temperature sensor o r wiring issue be the reason? How common is this problem in Pakistan’s hot climate?

Gari Specialist asked on 14 Jun 2025 12:52:28 pm

1 Answer

6 views |

Gari Master - on 14 Jun 2025 12:54:13 pm

The coolant temperature sensor monitors engine temperature. Incorrect readings in Pakistan may be caused by:

Faulty sensor o r wiring damage due to heat and vibrations.

Coolant leaks o r low coolant levels.

Corrosion in connectors.

Symptoms:

Overheating gauge spikes.

Erratic temperature gauge.

Engine running rich o r poor.

What to do:

Inspect and replace the sensor if faulty.

Check coolant levels and condition.

Repair o r replace damaged wiring/connectors.

Regularly flush coolant to prevent corrosion.