Originally Posted by puzzler

Thanks for the tip Paul Roberts. So Im assuming one of the air solenoids is in the air spring, right where the wires plug in. And then if you replace the spring it includes the solenoid too. Probably not possible to replace that solenoid separately from the spring. I see these very reasonably priced by import mfgrs and it seems they're often Arnot style with no reservoir tube.

Anyway I feel in my case after messing with it a few days that it is the solenoid because after doing the raise/lower and setting the ride height a few times its now holding fine, no leak. And as I noticed before the 'fill springs' command sent the car to the limits of the travel WAY up and if that doesnt cause a leak then its not in the air spring..And in fact the higher pressure could help reseat a sticky solenoid. It bled down last night and then pumped and held today and continues holding.

I would suspect in replacing the bag the issue may often be the solenoid in fact but as a commercial shop its just smarter to get it fixed and not worry which it may be..

That's probably what I'll end up doing but for now Im good and just fortunate I had the code reader to actuate the system repeatedly. With no shop or hoist its a rough job to tackle, although very manageable.