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Discussion Starter #1
Have had a go at curing some of my EAS problems but have not got far. The back end pumps up to max pressure and extension, whereas the fronts are getting no air at all which has been the case for a few weeks. The RSW diagnostic often says the exhaust valve has stuck so that has been replaced, at the same time I renewed the front bags as one was leaking slightly. Even when I depressurise the system the backs stay pumped up. I let all the air out the backs in the hope that everything would reset, but still nothing to the fronts, everything to the rear. Any ideas?
 

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1995-2002 Range Rover P38A
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Try jacking the front up to give it a kick start, I can’t remember if the rsw software allows you to operate each valve separately..
if it was running ok before the bag change I’d try the lift first in case the height sensors are out of range, otherwise I’d suspect eith the solenoids or driver pack
 

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Discussion Starter #4
Cheers, will try jacking and I do have a spare solenoid, not sure what is meant by ab internal leak.

The question I keep asking is why the rear end is pumped up to the max???
 

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That's the intriguing part about it. The rear being jacked up would suggest that the rear solenoids are sticking open but why? The RSW software will allow you to see the height sensor outputs and if the readings are going way above the stored figures for whatever height you have selected then something isn't shutting off the solenoids. It could be an internal leak within the valve block, it could be a problem with the driver pack although that would normally fail to open solenoids not open them and fail to close them. I'd be inclined to get the valve block out, refurb it with a set of O rings and a diaphragm and have a very close look at the connections within the multi plug connecting the driver pack to the solenoids. The female side of the contacts in the plug have been known to open up with age so the male pins don't get a good contact.
 

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If you're using EAS Unlock, then you should be able to activate each corner separately, but remember you always need to activate two solenoids to make things work, i.e. Inlet plus corner to inflate, or Exhaust plus corner to deflate.

Also check your compressor is properly filling the tank. Only the rear rising is often caused by a half-filled tank.

If the RSW software is not working for you, then there's another way to manually activate the solenoids, and prove the driver pack at same time.


  1. Unplug the main connector that feeds the EAS driver & block.
  2. Then apply 12V & Ground to the supply pins (12V = pins 12+13, Ground = pins 10+11)
  3. Then apply 12V to to pins 1 -4 to activate corners, and 12V to pins 5 or 6 to activate Inlet or Exhaust)
 

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Discussion Starter #7
Thanks again, have manually open and closed valves to get car level and will now switch off the control system.
I have time now to rebuild the block and maybe hard wire in the driver.

I still don't understand why the RSW software would not let the pressure out the rear, but maybe it's due to a bad connection to the driver
 

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Discussion Starter #8
Couple of other interesting points. I thought simply pressing in the suspension inhibitor switch on the dash would stop the electronics taking over, but as soon as I opened the tailgate the rear end shot up to max height. I released the pressure manually and disconnected the wiring loom next to the pump. I was surprised that the pump continued to work so disconnected that too. No faults have come up on the dash so far surprisingly even when I went on a fast run when it would normally have tried to go into motorway mode. occasionally it asks for the pump to run and yesterday wanted to go to off road height for a while but then the display settled to normal, all with a major disconnect!!!!!
 
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