New member; Air suspension problem Disco II

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Darth Tickle

New Member
Posts
6
Location
Oxfordshire
Hello all.
I registered a while back but only browsed once of twice. Sadly, I'm now in need of some advice, hope there's someone out there who can help me.

I've got a 2004 Disco II which I love dearly, and have owned (more or less problem free) for two years.

On Friday I drove a short distance from home and the rear suspension lowered to the ground of it's own free will. I got the "SLS" warning light on the dash. I limped home and got out the manual.
I checked and tested the fuse under the dash, and fuse and relay under the bonnet, and they are all OK (checked them in neighbouring slots to prove they work).

After a cup of tea, and browse on this site, started the car and it raised itself right up to max height when I pressed the manual raise button on dash. I pressed the button to bring it back to "normal" and went for a short trip, all was well. Got home, and after turning it off it stayed at normal height overnight. Next day, I drove off again, only to have it fall to the floor again. It seems much lower on near side than offside. Parked up and got a hire car while I work out what is wrong.
I got it to raise back to normal on Sunday, and again it's sat looking normal overnight....

So....
  1. I don't think the compressor's knackered, as it will raise and lower the car.
  2. I took the compressor cover off when the car was running, and it sounds like it's working. Cheked the filter behind the rear lights, also seems dry/clean.
  3. The airbags can't be leaking as it sits fine (when it wants to).
  4. Seems only to drop to the floor when it's running, so cold this be an air regulation problem ? Sticking air valves ?

    Anyone encountered this sort of thing ? Got any suggestions as to what I should check next ?
 
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