Is the air recirculation light on or off?
2 Answers
Air recirculation is indicated by the light being on. Below is relevant information about air recirculation: 1. Function of air recirculation: The air recirculation mode in air conditioning prevents outside air from entering the vehicle. When outside temperatures are extremely high or low, selecting air recirculation mode allows the AC system to operate in this mode briefly to quickly lower or raise the interior temperature. 2. Switching air recirculation mode: If equipped with an air quality sensor, when the system detects increased concentration of harmful substances in outside air, it automatically activates air recirculation mode to prevent outside air from being drawn into the vehicle. Once the concentration of harmful substances in outside air decreases to normal levels, the system automatically deactivates air recirculation mode, allowing fresh air to enter the vehicle again.
When the small light on the recirculation button is lit, it means the recirculation mode is activated. Having driven for many years, I usually press that button when stuck in city traffic or passing by garbage dumps. Once the light turns on, it confirms that the air is circulating only inside the car, keeping out external pollutants. If the light is off, it generally means the fresh air mode (external circulation) is on, allowing outside air to flow in. This feature is quite practical—for example, using recirculation with AC in summer cools the car faster, and in winter, it helps save fuel when heating. However, avoid keeping it on continuously for too long, as the cabin air may become stale; occasionally switch to fresh air mode for ventilation. Also, remember to check if the button is functioning properly—if the light is broken, the mode might not actually change. Overall, the lit light is the indicator of activation, so just get into the habit of switching as needed.
