Where is the Audi Air Quality Sensor Located?
2 Answers
Audi air quality sensor is located on the air filter frame. Here are the specific details: 1. Introduction: The air quality sensor, also known as the comprehensive environmental monitor, primarily measures temperature, humidity, air pressure, light intensity, PM2.5, PM10, TVOC levels, as well as concentrations of gases like oxygen, carbon dioxide, carbon monoxide, and formaldehyde in the air. 2. Function: The air quality sensor is commonly used to monitor pollutant concentrations in the air and serves as a crucial component in air purifiers and fresh air systems. 3. Application: It is used for detecting pollution from renovations and monitoring indoor air quality in offices.
I've been driving an Audi A4 for almost five years, and the air quality sensor is located at the front of the engine compartment, specifically behind the grille near the lower edge of the windshield. There's a small probe there designed to sense external air, which is quite cleverly placed to avoid blockage by debris that could affect readings. During my last service, the technician mentioned that this location is prone to getting clogged with leaves or mud. If not cleaned promptly, the sensor becomes less sensitive, and the air conditioning may automatically switch to external circulation, drawing in polluted air. Many newer Audi models like the Q5 have a similar setup. Personally, I recommend checking it when you open the hood, but avoid disassembling it yourself—it's somewhat fixed in place, and too much tampering might cause issues. Understanding this setup is crucial as it directly impacts the freshness of the air inside the car, and its placement ensures the fastest air sampling.
