Ok, then see what the pressure is when you shut it off. Turn the key on 5 min later and see how much pressure is in it. Better be the same, or the computers right, it's got a leak.
Doing that right now!
However I’m stumped on this. Once the vehicle raises to its target height, the center valve block closes off correct? Aka valves close from center to front/back. The system doesn’t stay charged. Therefor once vehicle is raised if there was a leak in the line from front to center or back to center, once the center valve block closes the compressor is going straight to the reservoir and pressure will build faster, which it doesn’t do.
There has to be something causing air to be consumed and get out of the system which only happens when driving on rough terrain aka the suspension is moving aka shocks go up and down. All of these suspected issues would happen all the time. I’m still not seeing something that makes a light bulb go off that explains why the suspension moving drains the reservoir.
I’m almost considering a chaffed or broken wire somewhere that’s triggering the exhaust valve to open to drain air when it shouldn’t. Maybe when the suspension is traveling it’s causing the wire to contact somewhere?? I don’t know when the exhaust valve should open other than lowering the vehicle....
For the reservoir to drain so fast there would be a MAJOR leak somewhere not just a trickle. Therefor isn’t it logical it’s dumping out the exhaust, so the question would be why is the exhaust valve opening to let it out?
IF I can confirm pending this pressure test that there is no reservoir leak, I’m going to buy some bolts tomorrow that fit into the valve block ports. I’ll plug the holes to the front /rear so that the compressor to reservoir is the only line open. That will Show me the rate of Reservoir air pressure build up knowing that 100% of the compressor is going to the reservoir without loss.
Then I can plug in the line to the front and back individually and see if the rate of build up slows. That will single out what line if any is giving me air loss in terms of singling out leaks but still doesn’t explain why rough terrain / suspension articulation causes major reservoir air loss. I’m sure driving around causes air loss too but less suspension travel = less air lost.