Thread: SLS suspension issues

Only had my D2 since Dec2016 and going back to air bags in mine, has spring at the moment that are pretty good but that switch on the bash is mocking me!!
Maybe a good idea or might be a headache but willing to give it a go.
I think the last owner wasn't as meticulous with cars as I am as I've already fixed several things that had been left that would have bugged the crap out of me!!
So my two cents is if you are mechanically competent and don't have to pay mechanics fees stay with the bags and enjoy the ride and flexibility of them.

So I had a look at the fuses - it didn't actually blow the second time. Started up the car and it pumped up the suspension. I had another good look for leaks in the airbags with soapy water while raising/lowering the suspension and couldn't see any. I took the cover off the compressor to have a look there - all of a sudden I heard a big release of pressure from somewhere (not the compressor) and the car dropped back down and doesn't want to reinflate! Any ideas?!

Unless the bags have been replaced recently, they will be leaking, probably.

Id say thats why the compressor had blown the fuse, working double time to keep the rear end in the air.
If the car is going down over night, or a couple of nights, likely be holes in the bags.

OR

The height sensors are a bit iffy, maybe giving a false reading and making the ECU think its higher than it realy is, thus, the ecu dumps some air , which then it has to replace and the visciuos cycle continues.

Perhpas get a nanocom or similar onto it and do some hardcore diagnosis!

Springs are nice, and certainy trouble free, but Bags are BAGS!, and thats WAAAAAY cooler.

Thanks. It isn't gradual - it's dumping the air out all in one go, right back to the stops. If I leave it a bit and then start the engine again, it will reinflate. I might try and let it inflate, then unpug the compressor to see if the bags hold their pressure

Fuse blowing = excessive current in the circuit. Typically water damage to motor or compressor.
Leaking bags won't cause fuse to blow. The compressor will "time out" due to a failure of the bags to register correct inflation ( height) via the sensors.
Get some quick connect 4mm Schraeder valves and inflate your bags.
Pull the compressor and check the motor and piston.
I'd bet on this.
Check the circuit/ wiring.
Get someone with a Nanocom to download the faults.
If you have no record of bag change you likely have leaks here too.
Go to the
"Good Oil" and read all about it.

Thanks. When the compressor times out, would it then dump all the air from the system? So I currently have it inflated and the compressor unplugged. Took it for a quick spin and the bags haven't dropped at all (if I leave it plugged in it empties the bags all the way to the stops). Will see how they go...

the car dropped 30mm overnight so the bags are leaking, but I don't think that's the only issue

I don't know just what is involved but: before replacing an expensive compressor I would be taking it to an Auto Electrician to have the motor checked out, if it's OK (repairable or OK) you can get a kit to reco the air side then you know where you stand.
As far as any solenoids, (air valves) I have no idea, it might mess up all my thinking.

cheers

Mike