What causes the water temperature warning light on the dashboard?

[AryaAnn]

The water temperature warning light on the dashboard indicates that the coolant level is too low or the temperature is too high. The water temperature indicator light displays the working status of the engine. In some car models, the color of the indicator light shows the coolant temperature: blue indicates low water temperature; red indicates high water temperature; and no light means the water temperature is normal. The water temperature indicator light will flash when the coolant level is insufficient or the temperature is too high. After adding coolant, continue to observe. If the warning light remains on, check whether the water temperature sensor is faulty. In this case, you need to go to a 4S shop for repair. If you encounter high water temperature while driving, first slow down and park the car in a safe location. Do not turn off the engine when parking; keep the engine running. If you turn it off immediately, the engine will lose lubrication, causing severe wear and even boiling over.