Question about Land Rover Range Rover

7 Answers

Hello, RR L322 4.2 S/C November 2005, randomly my car loses partially power steering and, in the same exact moment, the back door + boot lid locks will not open at all. No matter if I use the key to unlock the vehicle or the electronic sensor on the key. I have read Salmaneid answer about heavy steering/Solenoid/BCU. I was wondering if the above symptoms are known by anyone..or should I proceed directly to replace the BCM. thanks best regards wally (in a n hour normally, door locks and power steering back to normal

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  • 5 more comments 
  • mc1_active Sep 13, 2010

    all easy things (leakage, levels, message from diagnostic) already checked, but it's not mechanical here..we are dealing with something more "esoterical".. I believe..We are in front of those particular gremlins which only a Range Rover can generate ..and therefore we need here a Range Rover Specialist and lover..

  • mc1_active Sep 13, 2010

    thanks, but again, I would be looking for a LR specialist's advice..before going for a straight replacement of the BCM.. I suspect that there might be something interesting to look for in the relation fuse box/BCM..because the strange relation door/power steering..but I would prefer to receive advices from somebody who has already experienced this "gremlin". I have found on other RR blog another owner having the same problem..but I haven't found any solution

  • mc1_active Sep 13, 2010

    already done..again:easy things already done

  • mc1_active Sep 14, 2010

    probably I havent' been clear. 1)diagnostic in a Land Rover garage didn't find anything; it is not mechanical no leakage, no pump problem, it is electronic 2) I know that there is a solenoid and that is connected to the BCM.thanks

    point is: that there is no reason to have the back door and boot lid not working exactly in the moment in which you have the power steering failure. That is the curios thing.
    The risk is to change the BCM and be in the same situation.

    I am trying to find on Fixya the advice of a LR RR expert who has already seen something like that, since it appears that my car is not the only one with sucha a problem..

    thanks

  • mc1_active Sep 14, 2010

    IT'S NOT THE PUMP THE LEVEL ETC ETC IT'S ELECTRONIC..either you have seen it before either you don't know it..pls I don't need anyone telling gain to verify the level/leakage/pump..it's electronic..and please I know that there is a solenoid and a BCM, but that does not explain while at the same moment you rear doors and trunk locked..that is the key to understand what it happens..because if I don't solve this, it could be useless to change the BCM and/or the solenoid

  • mc1_active Sep 15, 2010

    thanks a lot Saailer..this is a great point to start with!



    (BCeM on the 2005 RR L322 is under the driver's seat.. isn't it?) thanks wally

  • mc1_active Sep 15, 2010

    Solution by Saailer extremely precise, timely and helpful. Thanks Saailer. wally

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7 Answers

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  • Land Rover Expert
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Hello! The Tail door Locking relay is operated via a Brown/Yellow wire that connects to Pin # 22 on the BCM connector CO661...On Pin #23 of the same connector (right next to it) is a Brown/Red wire which is the Power Steering Lock, Electronic Control Unit (ECU), control signal...

I believe the problem is associated with the close proximity of these two signals...Visually check CO661 pins 22 and 23 to make sure they are not touching...Check for bare wire or kinks in the plug harness...send a comment

Guru....Saailer

Posted on Sep 15, 2010

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  • David Burbee
    David Burbee Sep 15, 2010

    Hello! Yes Wally, under the seat...Use a bright light and a magnifying glass...Remove the connector...Inspect for contamination, kinked, severe bends, cracked insulation...etc...It's a subtle fault, and to much movement could scare it away...The BCM is in a poor location; Contamination from spillage, etc...Saailer

  • mc1_active Sep 15, 2010

    thanks! I it looks perfectly logic! I will proceed accordingly..iIF the problem remains after such operations.. I have seen that there are some companies specialized in "restructuring" of BCM..before raising "white flag" and buying a new BCM I will ty such "restructuring". I think I have what I need.thanks.

    Now, (I don't know how it works Fixya and it could take some days before I find the time/space to interevene on the car) in order for you to benefit from this advice of yours, what should I do? click accept the solution? leave a feed-back somewhere? thanks gt

  • David Burbee
    David Burbee Sep 15, 2010

    Hello! Go ahead and click "accept"...I'll still respond to your questions if you are in need...At this point I feel confident with my solution...Those two signals are shorting together (perhaps resistively)...

    Saailer

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At a bit of a loss here as the power steering is manual with a pump driven by a belt from the engine so it should have nothing to do with the doors ,the only way i could see a problem described above is if the power steering was driven by an electric motor pump like a lot of modern cars then if i was getting this sort of fault i would look at the wiring feeds as if the steering is going weak and other accessorys playing up then i would suspect an electrical connection with a high resistance ,so wiring diagram and see whats fed from what supply and work from their to eliminate the problem .not an easy job maybe but a surmountable one for sure unless someone could say aha fault of the model change this or that component and away you go but i dont work on any one model or brand so i work from the basics i was taught a college many moons ago when cars had rod brakes and you had to scrape the big end shells but from the basics its relatively easy to diagnose any problem ,and this problem if it is a electric pump then its a supply or earth problem somewhere ,could even be the supplier has supplied under size cables in the wiring loom to cut costs ?? been known ---

Posted on Sep 15, 2010

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  • Land Rover Master
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CHECK POWER STEERING FLUID LEVEL IF LOW YOU NEED TO ADD MORE POWER STEERING TO CORRECT LEVEL ON THE DIP STICK. LOOK FOR LEAKS AROUND ALL THE POWER STEERING PUMP FLUID LINES. FIX AND BLEED POWER STEERING SYSTEM. AND CHECK FOR LOOSE BELT TENSION. READJUST IF NECESSARY.

Posted on Sep 14, 2010

  • Jonah Oneal Sep 15, 2010

    BEST TAKE TO DEALERSHIP LET THEM SCAN IT WITH THEIR DIAGNOSTIC EQUIPMENT IF YOU ARE HAVING KEY AND IMMMOBILIZER PROBLEMS.THEY HAVE TO BE REPROGRAMMED AT RANGE ROVER DEALERSHIP.

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The steering sensor links to the BCM so it done is probably the problem. A scan would have to be by a qualified technician

Posted on Sep 14, 2010

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You would need to scan the vehicle with one of the specialist Land Rover test systems to see if that's happening. I'd certainly look into that before changing parts.

Posted on Sep 13, 2010

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  • Expert
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Hi! Yes you may need to replaced the BCM to get rid of the unusual behavior of the car. Have a good one and thank you for using FixYa!

Posted on Sep 13, 2010

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  • dj_relly999
    dj_relly999 Sep 13, 2010

    Hi! Hows it going?

  • dj_relly999
    dj_relly999 Sep 14, 2010

    Good thing. Have a good one and thank you for using FixYa!

  • dj_relly999
    dj_relly999 Sep 14, 2010

    Hi! Hows it going?

  • dj_relly999
    dj_relly999 Sep 15, 2010

    Thank you for using FixYa!

  • dj_relly999
    dj_relly999 Sep 15, 2010

    Alright, good luck on this man.

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  • Master
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Does the check engine light comes ON.Or any kind of error lights comes up on dash.Also is the power steering fluid leaking or low get it checked.Also the power steering pump has to be checked.Also for back door check the door latch.If all checked ok then yes continue with the BCM replacement.It can be possible. Keep updated.Thanks.

Posted on Sep 13, 2010

  • raj somaiya
    raj somaiya Sep 15, 2010

    Keep updated with the results to continue further.
    Thanks.

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