Audi offers air suspension on some of their higher-end models, including the Audi A8, Audi Q7, Audi Q8, and Audi A6 (in certain trims or configurations). These vehicles may use a compressor (sometimes referred to as an air pump) to maintain the correct air pressure in the air springs (or airbags), which allows the vehicle's suspension to adjust based on road conditions or driving mode. Function of the Air Suspension Pump (Compressor) The air suspension compressor in Audi vehicles serves a similar function to the AIRMATIC pump in Mercedes-Benz vehicles. It generates compressed air and sends it to the air springs, which can then inflate or deflate to raise or lower the vehicle’s ride height. This provides: Adjustable ride height for different road conditions (e.g., higher for rough terrain or lower for high-speed driving). Improved comfort by adjusting the suspension stiffness based on driving conditions. Self-leveling to maintain even ride height and load distribution. Signs of a Failing Air Suspension Pump (Compressor) If the air suspension pump fails, it can lead to several issues: Suspension Warning Lights: A warning light on the dashboard may indicate a fault with the air suspension system, particularly if the compressor is not working correctly. Vehicle Sagging: If the air suspension pump is not inflating the air springs properly, the vehicle may sag or lean, especially when parked for an extended period. No Ride Height Adjustment: If the compressor fails, the air suspension system may not be able to adjust the vehicle's ride height, making it difficult to raise or lower the car. Hissing or Air Leaks: A malfunctioning compressor or air lines can result in air leaks, often making a hissing sound, indicating pressure loss.