That merely checks initial windings. Run windings as well as psi need to be verified, yes? May have a worn pump, bad valve, worn ring and/or compromised compression from the compressor itself.
I changed my rear airbags and it raised and lowered for one day now it won’t go up or down and it never releases the air pressure like it used to when I would lock the doors do you know what it could be I checked the fuses and I’m pretty sure they’re all good
if the electric motor running is dosnt mean the compressor is good, the hose where the pressure coming out have to push 14 bar, or is wont lift your car up! And i also learned a big lesson, never buy a used one from junk yard or other place only buy new. They go bad very easy
