Sometimes it does not deflate for a whole week+. It tells me the air bag is fine. Sometimes I get out, close the door and 10 seconds later, hear a solenoid clicking once, and suspension lowers only on one side.
Reading the manual, the SLABS compfuser obbeys to doors too. But the behavior is both purge and left only valves get energized. When it wants to.

What may be going on ? The right side has never done it.
How do you command to go from off road mode ORM to 'normal' mode with no remote ?

 

Did you take apart the sensor arms from the frame to the suspension? The lower connection on the suspension corrodes and siezes up. Carefully take it apart, clean it, lube it up with grease and put it back together.
When u hit a certain speed(30mph?) it automatically lowers to normal height from ORM.

I do mine twice a year, right before winter and in spring.

Hope this helps. Good luck.

 

Well I see where you're going with the "left side only" thing, but the way the SLS works would make a faulty valve block easy to check in this case. If you go into off-road mode and the vehicle raises evenly, then the left and right control valves are both working fine.

Just to clarify the left and right control valves are used for raising AND lowering, there is no independent raise/lower valve for each side.

I think almost always.. when mine adjusts the height after I open/close a door, it's both sides.

I would pop the SLS cover off and energize both solenoids to check, technically they shouldn't do anything. If you energize the exhaust valve and check each control block you can check them that way. I think you can also check them if you've got a computer that can access SLABS.

To lower the vehicle from off-road mode, you cold down the button till it bings at you, it'll flash as it lowers. You can also buy the SLS keyfob and raise/lower the suspension in any increment, plus you can lower it from ride height to the limits for hitching trailers.

I've rebuilt mind from scratch using an air tank and viair compressor, with the Arnott bags - let me know if you have any specific questions.

 

Thanks for your post, learned something.
About the valves, the on board SLABS compfuser can energize only one valve for inflating/deflating if it wants to, as I understand, so it can lower/raise only one side.

Could it be am self misled and barking at the wrong valve; being the right one that never deflates the not working one by never lowering ? (or its associated wiring/sensor/circuitry)