What does 'ch' mean on the dashboard?

[DeMalachi]

The 'ch' on the dashboard refers to the water temperature gauge, which ranges from C to H. C represents 60 degrees, and when the needle points to C, it means the water temperature has reached 60 degrees. The red H mark indicates 110 degrees, so the temperature can be estimated within the range of 60-110 degrees. Here are the reasons for excessively high water temperature: Insufficient coolant: Coolant leakage or insufficient coolant can cause the engine water temperature to rise. It is important to check the coolant level promptly and add it to the appropriate level if necessary. Thermostat failure: The thermostat automatically adjusts the amount of water entering the radiator based on the coolant temperature, changing the water circulation range to regulate the cooling system's capacity and ensure the engine operates within the appropriate temperature range. If the thermostat fails, the car's cooling system may not perform a large circulation, leading to an increase in water temperature.