What Causes the Car Fan to Keep Running After the Air Conditioner is Turned Off?

[McRiver]

Check if the electric fan is functioning properly. Normally, the electric fan has two speed settings: low speed and high speed. The high-speed setting activates when the air conditioning pressure is too high or when the engine coolant temperature reaches 103 degrees Celsius. Inside the car, there is also a button labeled 'C', which is the recirculation button. This button can block the airflow between the inside and outside of the car. Especially in summer, turning on the recirculation mode can significantly enhance the cooling effect. Additional Information: This feature is typically used right after turning on the air conditioning to help the car interior reach the desired temperature quickly. However, prolonged use of recirculation without air exchange may lead to dizziness, chest tightness, or other symptoms of oxygen deficiency among passengers. Therefore, it is advisable to turn off the recirculation function after some time to allow fresh air to circulate before turning it back on.