Why does the water temperature gauge light up and then turn off intermittently?

[OLilliana]

It may be caused by a lack of coolant, where a slightly low coolant level can trigger temporary warnings. It is recommended that the owner promptly add coolant to avoid serious consequences. Specific details are as follows: 1. The engine water temperature ranges from C to H. C represents 60 degrees, so once the water temperature gauge needle reaches C, it indicates the temperature has reached 60 degrees. The red H mark represents 110 degrees, and the temperature indicated by the water temperature gauge can be estimated within this 60-110 degree range. 2. Turning on the air conditioning may cause the water temperature to rise because the engine idle speed increases automatically, generating more heat. If the car is stationary, the cooling speed relying solely on the fan may not be sufficient. However, most passenger cars do not encounter this issue as they are equipped with a temperature-controlled fan.