Which button to press to exhaust air from the car?
2 Answers
There are two circulation modes for exhausting air from the car: external circulation and internal circulation. Here are the extended details: 1. External circulation function: When using external circulation, fresh air enters the car from the external air intake, while the air inside the car is expelled through the vents at the rear of the vehicle, balancing the air pressure inside and maintaining air circulation. These vents are designed as one-way valves, allowing air to flow only from the inside to the outside. 2. Internal circulation function: The main purpose of the car's internal circulation is to block out polluted air, preventing external gases from entering the car, ensuring clean air inside without air flow circulation.
I've been driving for over ten years, and often encounter stale air issues during my commute, especially when stuck in traffic with poor air circulation, feeling stuffy. The most straightforward solution is to press the recirculation button on the AC panel—it usually looks like a small car with an arrow icon, conveniently located on the right side of the steering wheel. Pressing it switches to fresh air mode, where outside air is drawn in by the fan, gradually pushing out stale air through door gaps. During summer with the AC on, prolonged use of recirculation can make the air feel stale, so I press the button every half hour to ventilate, which helps prevent motion sickness and keeps me alert—especially crucial in heavy city traffic for safety. Some newer cars even allow scheduled air refresh via the touchscreen, making it more hassle-free. On highways, I avoid opening windows to reduce noise, relying solely on fresh air mode, which works just fine. In short, developing a habit of regular ventilation benefits driving health, a practice I’ve always maintained.
