Some suspension fault codes this morning

Discussion in 'LR4' started by ryanjl, Nov 19, 2019.

  1. ryanjl

    ryanjl Full Access Member

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    After a standard 15-minute commute to work this morning, I went to lower my suspension to clear a part of the parking garage and was treated to a 'ding' and the yellow triangle.

    Looks like I'm getting the following codes:

    I cleared the codes, and they immediately returned.

    Searching turns up something about the compressor. My compressor was replaced at the dealer about 20k miles ago, so I doubt it's that.

    The last code makes me wonder if I don't have ride-height sensor going and it's triggering the other things.

    Any guesses or experience?
     
  2. ryanjl

    ryanjl Full Access Member

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    Looking at the invoice from when the dealer replaced the compressor, it's pretty vague on exactly what was done or what was replaced.

    If a compressor is replaced, is the dryer part and parcel with that job, or is it possible the dealer replaced the compressor but not the dryer?
     
  3. ryanjl

    ryanjl Full Access Member

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    Reset the faults again. This time, only the two C1A faults remain, and the U0421 fault is gone. This was just parked in the garage, however. Not sure if the U fault will return once I drive it.

    I guess it's possible that the compressor was replaced and not the dryer, but it was under CPO warranty and I'd be shocked they'd choose a cheap-out method like that, when it would be easier to just replace the whole unit. I'm leaning towards a possible electric line issue. Not sure, though. May pop the cover off of it tonight and see what I see.
     
  4. scott schmerge

    scott schmerge Full Access Member

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    Yes, your valve block that sits near the compressor is likely the cause. With mine, just needed new o rings. Can get a kit on amazon or eBay. Just clean the block internals and fit new o rings.
     
  5. ryanjl

    ryanjl Full Access Member

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  6. ryanjl

    ryanjl Full Access Member

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    Okay. Just bought 3 of the rebuild kits. Figure I'll start with the center one, then do the front and rear when I get time. Looks like this is an eventual problem on a lot of EAS Rovers, so I won't feel too bad if this doesn't fix my issue as it's apparently something I'll need to do sometime anyway.

    I can't find any info on the location of the center one, though. I assume I'll be able to find it easily once I crawl underneath. I'm guessing it comes after the air tank in the system, correct?
     
  7. scott schmerge

    scott schmerge Full Access Member

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    you only need one kit. The center kit in the photo is what you need.

    the valve block sits right in front of the compressor. I used my gap tool to deflate the system down to bump stops (definitely want to do this).

    this is what the block looks like

    F7432F71-9455-41AF-AB6E-C853213D5EEB.png
     
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  8. ryanjl

    ryanjl Full Access Member

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    Thanks.

    So one kit does all 3 valve blocks? Guess so, looking at that photo and having watched a few videos online.
     
  9. scott schmerge

    scott schmerge Full Access Member

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    Yes sir! The center o rings are the ones you’ll need
     
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  10. TrinidadLR4

    TrinidadLR4 Full Access Member

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    Speaking of the valve block and compressor, is any maintenance required on any components to prolong their respective lifespans, or is it all sealed up and the o-rings fail eventually?
     

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