What does AQS mean in a car?

[DelKimberly]

AQS (Air-Quality-System): The Air Quality Module is an automatic device that sensitively detects the turbidity and humidity of the outside air and promptly switches between internal and external air circulation. During specific usage, the AQS is normally in external circulation mode. When it detects turbidity or harmful gases in the outside air, the reaction sensitivity of the AQS may vary. Below is an introduction to related content: 1. AQS is highly sensitive to vehicle exhaust. For example, during traffic congestion in urban areas, if the vehicle ahead suddenly emits a large amount of exhaust, the intelligent air conditioning system can detect it within seconds and immediately switch to internal circulation mode, keeping the cabin air fresh. 2. AQS has a moderate response to road dust. When driving on lightly dusty roads, the AQS will not switch immediately. It only switches to internal circulation mode quickly when road dust becomes severe. This is why frequent cleaning of the air conditioning filter is necessary when often driving on sandy or dusty roads. 3. AQS reacts slowly to colorless harmful gases.