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Disco II Air suspension – the definitive guide

Discussion in 'Common Faults and Questions' started by battenberg, Aug 5, 2008.

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  1. Ice cold 1664

    Ice cold 1664 New Member

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    Thanks chaps, do you think the car will show a fault code? I just ask as there are not currently any warning lights.

    I may have to invest in a Nanocom although I have just downloaded the Rave manual. Quick question, where would I find the compressor relay? Had a quick google to see where I can get one from and all it seems to bring up is forum sites talking about problems!
     
  2. maverixxx

    maverixxx Member

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    Hi all, have to say this is a massively informative and helpful thread and has helped me over the last few months of troubles however I am a little confused as to my current situation and I'm starting to feel like I might be throwing money at an endless problem with a 52 plate ES.

    New air bags went on a couple of years ago and ride has been fine until December when one day the ride height just dropped at the rear just after driving away. left for a few days then was taking it to be looked at and the rear came up within a minute of driving away. Carried on as normal then a month later it dropped at the garage after a a short run start and stopped the engine a few times and it came up again. a week later it dropped again and never came back up so replaced the compressor and all seemed well until it dropped again after doing about 20 miles.

    So then it starts to show a rear left sensor fault which was promptly replaced, and now it has risen about 2" higher on the side of the new sensor. I am thinking it may be a calibration issue but my garage tells me that they have never heard of such a thing. I'm wondering if sensors need to be replaced in pairs or like for like I think one side is original and the other is Britpart?

    Thanks in advance for any help and suggestions
     
  3. rjsdavis

    rjsdavis Active Member

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    There is a calibration, but you don't need to go to a Main Stealer to get it done. Any good independent Landy specialist will be able to sort out your ride height issue. There's a small amount of extra info on Page 1 of this thread.
     
  4. neilly

    neilly Well-Known Member

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    post your question on the Disco page and ask if anyone ins local who can help with diagnostics.

    Cheers
     
    battenberg likes this.
  5. Jack rush

    Jack rush Member

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    I need a relay for the air compressor for a d2 but can’t find one anywhere where can I get one thanks.
     
  6. 318honey

    318honey New Member

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  7. Smokey Overton

    Smokey Overton New Member

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    Congrats on an exceptionally thorough and helpful article.
    My 2003 series 2 won't let go of off-road mode on the off side....should I be looking at blocked valves, or height sensors please ?
     
  8. neilly

    neilly Well-Known Member

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    I would kindly suggest you both post iin the Disco section, also it would be benificail for you both to connect up to working diagnostics ( nanocom or Hawkeye if posssible ). This may help you resolve your problems in a more timely manner.

    Cheers
     
    318honey likes this.
  9. 318honey

    318honey New Member

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    Thank you all, I have fixed my car today, as someone mentioned in another post, I took out the relay from R3 (headlamp washer) , and put it into R5, sls… hew presto it worked all good.. so,then I went to lookers landrover dealer ship, and bought a correct relay for about £12 with tax...… ALL FIXED and happy bunny.
     
  10. 318honey

    318honey New Member

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    hello Jack, I got lucky and got one today from land rover dealer. just under £13 . I took mine out of R5 to try it. (headlamp washer). then slip him into R3.
     
  11. disco dickie

    disco dickie Active Member

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    my god , this is an old post but cheers battenberg.... got to grind off a bolt tomorrow and take this pesky compressor off. got a service kit coming for it. got to dry this mother out, no doubt, and hope it works when i plug it back in
     
  12. buddabeast

    buddabeast New Member

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    I replaced both my air bags today on my Discovery 2. Hopefully problem solved.
    Definitely the drivers side bag was leaky as I had seen and felt the leak where the bag rolls over. The leaky bag usually needed a bit of weight before it would start to leak and drop down and most of the time it would come back up with the compressor if the weight wasn't too much.
    What was confusing is that when the leaky bag had enough down weight to go down, the passenger side bag would let down as well, even though the weight was on the drivers side and I am quite sure that bag was not leaky.
    I do not know what is causing that and I am pretty sure it never used to that, it usually dropped on drivers side only. Is the suspension trying to keep itself level on both sides or is there something else going on? I thought both bags were totally independent of each other?
    The compressor still brings them both up.
    I suppose time will tell.
    Thanks so much for the original post - helped me a lot today.
     
    Last edited: Nov 3, 2019
  13. M1CXF

    M1CXF New Member

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    Hello Air Suspension Boffins. I am quite okay working on air suspension having played with HGV springs and I find the hydraulic suspension on older Citroens quite simple, so don't scare easily. I am investing the idea of putting air suspension on the front of my D2. It is my intention to use mostly genuine Land Rover parts for most of the system and control the valves and compressor using the information from height sensors with either a Raspberry Pi or an Arduino. I am not too concerned about being able to raise or lower it like the rear as I have yet to find the need to do this, just to allow it to adjust itself as needed.
    Also, how do the height sensors work? Is it a variable voltage signal similar to a fuel gauge or did the boffins at Lode Lane make it overly complicated just because they could?
    Regards

    Trevor
     
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