What does AUTO mean on the car air conditioning panel?

[MaddoxLee]

AUTO: Automatic air conditioning. Pressing AUTO turns on the air conditioning, which controls the air outlet temperature based on in-car sensors, providing warm air in winter and cool air in summer. Related explanations are as follows: 1. It maintains a relatively suitable temperature inside the car. If the temperature is too high or too low, the air conditioning will automatically adjust the air outlet temperature and fan speed to regulate the in-car temperature. 2. A/C: Abbreviation for air condition, which can be understood as the air conditioning cooling switch in a car. 3. The heat source for the car air conditioning's warm air is provided by the engine coolant, which is the "water" in the radiator. Two water pipes are connected from the engine coolant's small circulation loop to the heater core inside the air conditioning assembly (usually located in the central lower part of the dashboard and not visible without removing the dashboard). This small heater core provides the heat source for the air conditioning's warm air system. Even in summer, this small heater core will have coolant at over 90 degrees Celsius flowing through it.