What does the warning symbol of a thermometer with waves underneath indicate?

[AngelaFitz]

A thermometer with waves underneath indicates the engine coolant temperature warning, which pertains to the temperature of the coolant. Its specific functions are as follows: 1. While driving: If the coolant temperature warning light remains lit, it means the coolant temperature has exceeded the specified limit, and you should stop driving immediately. 2. Coolant temperature warning light: It resembles a thermometer and is used to display the temperature of the coolant in the engine. A red light indicates that the engine temperature is too high, while a blue or green light means the engine has not yet reached the operating temperature. Information about coolant is as follows: 1. Coolant: Its full name is antifreeze coolant, which means it has antifreeze properties. Antifreeze prevents the coolant from freezing in cold weather, which could otherwise crack the radiator or damage the engine cylinder block. 2. Composition and classification: Coolant consists of water, antifreeze, and additives. Based on the antifreeze component, it can be classified into alcohol-based, glycerol-based, ethylene glycol-based, and other types of coolant.