Maybe is still someone in here lool
Long story short ����

In the past with the original compressor, every sunday when i use the car, find it low (almoust down on front axle, and a bit down on rear axle), and when i unlock the car and open driver door, the suspension come back to normal. Never bother me, untill came every sunday Self.Lvl.Susp.Inact....so i need to delete it then suspension came back to normal....the error was Acumulator pressure remain constant.

I have buy the repair kit with o-ring from bagpipingandy, and everything work fine, still front axle going down every sunday, but no errors and the compressor works fine.
But i decided to buy a second-hand compressor, install it, works normal for 2 days, then came back the error....then again every sunday i find the error, so delete it, and suspension back to normal.

Yesterday, delete the error, suspension back to normal, no error on dash, drive the car for 20-25miles, park it on a small hill at idle, and suddenly came back Self.Lvl.Susp.Inact + tyre pressure....go home and scan it, and have found height sensor rear right.

Take out the rear right wheel, inspect the sensor, spray with some wd-40, everything seems OK, the plug is ok, the arm is ok....try to delete it, and the error go out for 1sec then come back but the tyre pressure stay there, never dissapear.

Try to reset the EHC2 module and do the adjustment precedure, but no luck (i didnt measure every wheel to write in the procesure exactlly what i have on my car, just type 19" wheel, and 710mm front and 712mm rear like have to be)....i have tried this adjustment 3 or 4 times, but no luck....i try to go on with Inpa on the error, and i can see the rear right height sensor isnt reading the correct value.

Finally i take the sensor out, find out where that 2 little screws go in the sensor was coroded, so i have buy a new sensor, install it, delete the errors, but no luck.....sls error+ tyre pressure still on dash. Try to recalibrate the height, and the sls error dissapear but the tire pressure (is yellow) still there.

What can be wrong ? Why the tire pressure wont dissapear ?
Should i take the new piston o-ring from the old compressor and install it on the second-hand one ?

Any help i apreciate.