2017 BMW X5 rear suspension issue

[wolfpk]

so i just bought a x5 xdrive50i and its been pretty great so far, and then i got up one morning, went on a drive and noticed i was getting thrown out of my seat constantly like the cars wheels were coming off. ended up finding the rear suspension deflated and thought i heard a hissing noise and decided to change the bags, didnt fix my issue, took out the compressor and dried the desiccant beads properly, checked the piston and everything looked fine and operational. reinstalled the compressor, and its still giving me issues, the only thing i can tell right now is the compressor will come on for about 10 seconds or so, and then it will shut off, which i read it will do that in cases where it doesnt build pressure. although i just changed both bags and all lines are connected and all o rings seem fine. its not even trying to air up basically, so im wondering if it could possibly be the solenoid thats got the red and blue line coming in? at this point lost at what to do and would appreciate any advice.

also wanted to note that when i first removed all the lines to change the bags there was no air whatsoever.

update on the issue, i found this guys video of an in depth and simple testing of the air compressor:

I took my compressor back out and found there was a slight amount of air in the lines going to the bags and no air in the line from compressor to the solenoid block, so i tested the valve drain solenoid and found it was stuck open, messed with it (twisted on the air fitting part) and hit it a couple times with a wrench until i heard it click and retested it for a leak as he did in the video and it closed, so i cleaned it up and reinstalled, turned the car on and it pumped right back up.

[stocktree]

Is the height sensor on the rear suspension ok?

[wolfpk]

Originally Posted by stocktree

Is the height sensor on the rear suspension ok?

not sure tbh, i havent had any luck finding the location of that or what it looks like/how to troubleshoot it

[suitedcboy]

It is a cube with a lever on it and the lever has link down to the lower control arm. If you look between the anti-roll bar and the lower control arm inboard rear bolt you will be looking at it. On right and left since the air bags have left-right levelling control. The sensors can be read with ISTA or a complete scan tool.

[wolfpk]

Originally Posted by suitedcboy

It is a cube with a lever on it and the lever has link down to the lower control arm. If you look between the anti-roll bar and the lower control arm inboard rear bolt you will be looking at it. On right and left since the air bags have left-right levelling control. The sensors can be read with ISTA or a complete scan tool.

alright, ill have to probably buy one of those cables and see if i can get the software on my Laptop to learn how to use ISTA.