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L322 Immobiliser issue

Discussion in 'Range Rover' started by sockfish, Nov 8, 2016.

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  1. sockfish

    sockfish New Member

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    Hi all,
    Hopefully somebody here can help (I emailed Saint v8 yesterday but the situation is getting desperate(ish)!)
    Ok - so my 2005 L322 4.4 has just had an engine rebuild. It has been a convoluted process but we are finally there except....the blimmin' thing won't start.
    The engineer (who has been supremely patient and helpful) has done everything possible and has, basically, narrowed down the issue to what looks like the Immobiliser ECU - voltage is present at the starter motor as well as the ECU. The Engine ECU is throwing up a fault (using Allcomms) "Immobilsation ECU Interface Fault" as below. I cannot clear this:-

    upload_2016-11-8_10-42-35.png

    The key does everything it should - remote locks and unlocks, turns fully all the way in the ignition barrel. I do not have a spare although it would seem unlikely to be helpful if I did.

    So, assuming it's the Immobiliser ECU at fault, what is involved in getting a new one installed? They seem to be relatively cheap but does it mean a trip to a main dealer to do any re-programming?

    Any help greatly appreciated and accepted.
    Dave.
     
  2. holidaychicken

    holidaychicken Well-Known Member

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    The EWS immobiliser ECU generates a code that needs to match the engine ECU and mine used to lose its programming if I disconnected the battery and it would crank but not start. The only solutions I found was the guy from main dealer came out with T4 testbook and resynced it which takes 5 minutes, the first time I had the RR taken on a lorry to the dealer, and the option I have now is to use my Faultmate which can also reprogram the link.
    The fault you have from allcomms isn't the same as I had, if you search my threads of cranks but won't start you will see what I had.
    I believe the EWS immobiliser if faulty can be replaced and reprogrammed as long as the original engine ECU is present and that matches the key and ignition barrel etc.
    Allcomms cannot program the link
    What have you changed regarding ECUs?
     
  3. sockfish

    sockfish New Member

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    Hi Mr Holiday,
    I haven't changed anything at all yet - this situation arose as a result of having my engine rebuilt (nothing electrical) but the battery has been disconnected for a while which, I guess, has caused the issue.
    In my case, the engine doesn't even crank as (I'm told) there's no cranking signal being sent.
    Which dealer did you use?...in my experience they are not overly helpful but I suppose I can ring my local one (Harwoods, Coulsdon) and see what they say. Or maybe investigate a Faultmate!
    Regards, Dave.
     
  4. sockfish

    sockfish New Member

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    I just spoke with the local dealer who said I'd need to bring the car in, they'd need to do their own diagnostics etc., they can't do anything until the 22nd November and it's £100/hr + VAT. Helpful.
     
  5. holidaychicken

    holidaychicken Well-Known Member

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    i used guy salmon at maidstone and they were really helpful and £100 / hr + vat but i did get 10% discount as my car is over 10 years old, i think they look at it as charity to help those that can't afford a new RR.
    I can imagine if you if you take what is basically an old BMW into some RR main dealers they will kind of look at you as if you are eating a live baby:eek:

    I have attached the help files fro the EWS ecu form my Faultmate software and the Faultmate i think is the best software / hardware you can get for the RR but i would say that as i have one but the amount of detail and information that comes with the kit is incredible.
    Have a read through and try and understand what yours is doing or not but your fault is different to mine as mine would crank but in theory you shouldn't really lose the ECU programming for disconnecting the battery so i suspect mine is also faulty although when i only disconnect the positive terminal it doesn't lose its link??

    EWS 1.jpg EWS2.jpg EWS3.jpg EWS4.jpg
     
  6. sockfish

    sockfish New Member

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    Thanks Holiday,
    I have ordered a replacement (second hand) immobiliser ECU off eBay. We'll get that installed and then try and find someone to reprogram it.
    If anybody has any recommendations as to who might be able to do that?
    I didn't realise there were quite so many pitfalls with RR ownership!,
     
  7. gold rover

    gold rover Well-Known Member

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    Welcome to the jungle, we got fun an' games
    We got every fault you want, honey, we know all the names
    We are the people who can find whatever you may need
    If you got the money, honey, Range Rover's your disease ;)
     
  8. holidaychicken

    holidaychicken Well-Known Member

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    Nice, like a bit of Guns N Roses
    The last part of my attachments is what you are looking for which is syncing the immobiliser and engine ECU, it is certainly worth a try, failing that you need a good Indy or main dealer with T4, faultmate, i think Autologic, not sure on GAP Diagnostics IID tool but you could email them and ask and if it will do it then i would get one of those and kill two birds with one stone as you will need diagnostics anyway
     
  9. gold rover

    gold rover Well-Known Member

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    As soon as I read comment about pitfalls the first line of the song jumped into my head :D
     
  10. Karen3492

    Karen3492 New Member

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  11. holidaychicken

    holidaychicken Well-Known Member

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    I would t even know where to start unless your battery is dying as a totally different vehicle to what I’ve been involved with, you basically have a disco.
    I would copy and paste your information above as it can’t be seen as you have added it to the quote and start a new thread with the Range Rover sport heading.
    Plugging in to Diagnostics would be second after battery health and alternator check.
     
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