What does the AM for internal and external circulation mean?

1 Answers
JasperAnn
07/30/25 3:51am
The meaning of AM for internal and external circulation is as follows: A stands for automatic control of the car's internal and external circulation, while M stands for external circulation. When the A button is turned on, the air conditioning system will automatically determine whether internal or external circulation is needed based on the air quality outside the car. When the M button is turned on and the light is on, the car is in internal circulation mode; when the light is off, the car is in external circulation mode. Related information is introduced as follows: The functions of internal and external circulation in a car are different. External circulation mainly serves the purpose of ventilation. When the air inside the car is relatively polluted, the car needs to turn on external circulation to replace the air inside. When the car turns on internal circulation, the air inside the car does not circulate, and the airflow circulates in a closed environment.
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