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What Causes the Water Temperature Warning Light to Illuminate? How to Handle It?

1 Answers

VanLorenzo

07/25/25 1:54pm

The water temperature warning light illuminates due to excessively high water temperature. In such a situation, you should find a safe place to pull over, but do not turn off the engine. Instead, exit the vehicle and open the hood to allow the engine to cool down. High water temperature is mostly caused by the coolant not being replaced for a long time or issues with the coolant circulation. Solutions: 1. Lack of antifreeze: Check for leaks, repair the issue, and then refill to the correct level; 2. Poor water circulation: The thermostat may not open properly or is stuck in a fully closed position, requiring replacement; 3. Reduced water pump efficiency leading to poor circulation and high temperature, possibly due to damaged pump blades, necessitating a pump replacement; 4. The cooling fan fails to operate properly when the water temperature rises, requiring inspection of fuses, relay circuits, or checking and replacing the fan.

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