Do I have a suspension leak?

Overnight, my 2006 RRS SC will lower to what appears to be access height. As soon as I start it up again, the compressor will kick on and the vehicle raises no problem. When idling the compressor will kick on every now and then for a few seconds. This is the first vehicle I’ve owned with air ride so I am not sure what is “normal” I just had it at my LR mechanic for a different repair, which they had overnight, and there was no mention of anything wrong with my suspension. I’ve sat in the vehicle after shutting it off and there is no obvious leak. It seems to adjust to however the ground is, level or not. What are some signs or ways I can see if there is a leak, and where?