Is the light on or off when the internal circulation is activated?

[VonMason]

The internal circulation light being on indicates that the internal circulation is activated. Here is an introduction about internal circulation: 1. When encountering traffic jams, it is essential to activate the internal circulation to effectively prevent harmful exhaust gases from entering the vehicle. 2. For short-distance driving, it is also recommended to use internal circulation to reduce fuel consumption; however, for long-distance driving, external circulation should be activated to allow fresh air to enter, ensuring sufficient oxygen and preventing accidents caused by oxygen deficiency. 3. If the interior temperature is too high, activating external circulation can quickly lower the temperature, expel hot air, reduce the burden on the air conditioning system, and help eliminate harmful gases inside the vehicle, such as formaldehyde.