What exactly is the air suspension supposed to do? Is it for ride comfort, load leveling? I'm not sure the purpose.
Reason I say that is my compressor kicks on for 5 seconds or so shortly after I start the vehicle. After that I don't ever see or hear it do anything. If I jump on the back of the trunk reducing ride height, it still does nothing.
I went on a cross country trip this summer with 5 people and luggage in the car, and the back end sagged considerably due to the weight. The air compressor never kicked in at all.