What does AQS mean in cars?

1 Answers
McHarley
07/30/25 4:33am
AQS (Air-Quality-System) is an air quality sensor in vehicles, an automatic device that can sensitively detect the turbidity and humidity of the outside air and promptly switch the car's air circulation between internal and external modes. Below is the reaction sensitivity of AQS to different pollutants: 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 reaction to road dust. When driving on roads with light dust, 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 dusty roads. 3. AQS reacts slowly to colorless harmful gases.
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