What to Do If the Car Doesn't Have an External Circulation Button?

[WalterLee]

Cars not having an external circulation button is a normal phenomenon. Nowadays, many cars only have an internal circulation button. When the internal circulation is turned off, the car automatically defaults to the external circulation being on, so there's no need to worry. Another scenario is that car manufacturers have integrated both internal and external circulation functions into the internal circulation button, requiring just an additional press to switch. Below is an extended introduction: 1. Introduction to external circulation: External circulation refers to outside air being blown into the car, keeping the interior air fresh and reducing motion sickness caused by poor air circulation. 2. The relationship between external and internal circulation: Internal circulation removes hot air from inside the car. To activate external circulation, one should first locate the internal circulation button; typically, the external circulation button is nearby. If there isn't a separate external circulation button, observe the indicator light on the button—when the internal circulation button's light is off, the external circulation is automatically activated. 3. Do not abuse external circulation: The external circulation function should not be misused. For example, when waiting at traffic lights, the vehicle ahead may emit exhaust fumes. Turning on external circulation in such situations can worsen air pollution inside the car.

[SanLane]

I've been driving for decades and have come across many cars without an external circulation button—don't panic. Usually, the air conditioning system is integrated into the central control screen. After starting the vehicle, press the AUTO button, and the automatic mode will handle the airflow and circulation. But if you need to manually switch to external circulation, tap the screen to enter the air conditioning menu and look for the circulation icon or mode-switching option, which might be a car icon with an arrow. External circulation is especially useful in key situations, like preventing fogging on rainy days or refreshing the air on highways. The absence of a dedicated button is meant to simplify the panel. If you really can't find it, check the owner's manual—it usually has diagrams to guide you. Or, ask the technicians at the 4S shop during your next maintenance visit; they can demonstrate it on the spot. Avoid randomly pressing buttons, as it could damage the system. Ensuring proper air circulation inside and outside the car helps prevent drowsiness on long drives.

[LaCarter]

As a young person who frequently tinkers with new cars, I find button-free designs even smarter. Just operate directly on the central touchscreen: tap the climate control entry, swipe to the circulation settings, and select fresh air mode to introduce outside air. Many cars also support voice commands—simply say "activate fresh air mode" and it responds. The fresh air mode improves cabin air quality, reduces carbon dioxide levels, and keeps your mind clearer during long drives. If the screen becomes unresponsive, check for system updates or reboot the infotainment system. I've also encountered some cars where this function is indirectly controlled via buttons on the multifunction steering wheel—don't worry, just explore the vehicle's system more. This method is efficient, eco-friendly, and far more convenient than outdated physical buttons.

[Suzanne]

When traveling with family, I particularly value simplicity and safety. If there's no external circulation button in the car, just press the AUTO automatic air conditioning, and the system will adjust the airflow automatically based on the temperature, including the circulation mode. Manual switching is usually found in the central control menu—just locate the circulation icon and tap it to set the external circulation. External circulation helps defog quickly in humid weather, while internal circulation avoids polluted air during traffic jams. Once set, it's done for good without constant adjustments. The key is to ensure air quality to prevent children from getting carsick. If the screen is hard to navigate, take a moment after starting the car to check the manual illustrations. Simple operations make driving more reassuring.