Common faults caused by high water temperature are:
1. The antifreeze in the engine cooling system is missing. There may be leaks in the engine, such as water pump leakage, pipeline damage, and water tank damage. etc.
2. The thermostat in the engine cooling system failed, causing the water temperature to be too high. Because the thermostat cannot be opened, the flow of coolant inside the engine is blocked, so the temperature of the coolant is too high.
3. The cooling fan in the engine cooling system is not working properly, resulting in poor heat dissipation of the coolant. Therefore, the water temperature light is on, causing the coolant temperature to be too high.
4. The water pump in the engine cooling system is malfunctioning. The water pump does not rotate smoothly, resulting in poor coolant flow. Therefore, the water temperature light is on and the coolant temperature is too high.
The above are common fault points. The specific fault points need to be inspected to determine the vehicle.