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battery drain fuse 49

Discussion in 'Range Rover' started by Mercedeschris, Feb 27, 2018.

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  1. Mercedeschris

    Mercedeschris Member

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    i have a 2004 Vogue L322. And inherited an on going battery drain. I see it’s a common fault on these cars. I’m an ex car Mecanic (30 years ago) but been in trade ever since. My drain is 2.08 Amps. If I remove fuse 49 it then drops to 50-60 milli amps which is about right to my mind. If remove the blue plug on the media box in rear 1/4 the drain disappears? The pins had some corrosion and one pin had completely gone. I had opened the unit and soldered in a new pin. The sat nav unit now works (blank screen until then) but drain still there?
    Any ideas any one
    Many thanks in advance
     
  2. wil2813

    wil2813 Well-Known Member

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    poss hedgehog on heater
     
  3. Mercedeschris

    Mercedeschris Member

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    Hi there.
    I checked that first of all as I was a manager at BMW for 10 years and it was an epidemic on most BMWs and the L322 electrics are mainly BMW E38 7 series.
    My drain goes when Sat Nav box is disconnected? Just confused why this ECU would consume 2 amps.
    I think all RR owners have suffered battery drains at some point. Thanks for your reply though
    Regards
     
  4. holidaychicken

    holidaychicken Well-Known Member

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    Have you got the Rave Electronics manual as it will tell you what else is on fuse 49, I’m away or I’d look it up for you
     
  5. Mercedeschris

    Mercedeschris Member

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    Hi there

    I must admit I’ve never heard of it LOL
    I’ll do some research on it.

    Many thanks for the tip
     
  6. holidaychicken

    holidaychicken Well-Known Member

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    Have a look here https://www.landyzone.co.uk/land-ro...lus-other-useful-info-on-range-rovers.322195/

    Rave = Landrover Bible

    I think I got the the electronics manual separately but have a look. It tells you where every pin of every ECU goes and also all your fuses. Water ingress in the rear compartment is fairly common so even though you have fixed one part it could still be bad inside or something else connected to it is
     
  7. Mercedeschris

    Mercedeschris Member

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    Thanks again
    I’ll look at it on my laptop tomorrow only on iPhone at present so it’s a bit fiddly.
    Regards
     
  8. Mercedeschris

    Mercedeschris Member

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    Hi all

    I have also noticed that since the sat nav screen ecu draining the battery. The interior lights, remote central locking, heated seats, heater control panel have all stopped working?
    Any body had a similar situation?

    Regards
     
  9. Mercedeschris

    Mercedeschris Member

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    Hi there
    Is this Rave manual free to down load? I seem to be struggling to get it to download. That said I'm no IT wiz to say the least.

    Regards
     
  10. brianp38dse

    brianp38dse Well-Known Member

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  11. holidaychicken

    holidaychicken Well-Known Member

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    I would say you have some lose connections somewhere but i would also be plugging it into diagnostics. Have you disturbed anything in the rear side panel where the satnav is or up behind the heater control panel ?
    I can email you the electronics library as it's only 7 Mb and has all the fuse details and gives a description of what ECU controls what equipment.
    If you pm me your email I'll send it over
     
  12. Mercedeschris

    Mercedeschris Member

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    Many thanks again.
     
  13. holidaychicken

    holidaychicken Well-Known Member

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    Ok, delete your email address before you get spam botted !!
     
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  14. holidaychicken

    holidaychicken Well-Known Member

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    On it's way, there is a load of information in it, have a read through the description and operation sections as well
     
  15. Mercedeschris

    Mercedeschris Member

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    You are a gent
     
  16. Saint.V8

    Saint.V8 Dyed-in-the-wool 100% RR Junkie

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    Careful, he'll get a big head and then Alan will get jealous and no longer play with his winky! :D
     
  17. holidaychicken

    holidaychicken Well-Known Member

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    Alan is far easier than that ;)
     
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  18. tomcat59alan

    tomcat59alan Well-Known Member

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    And I don't get jealous ,ask your missus. :p:D
     
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  19. holidaychicken

    holidaychicken Well-Known Member

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    I will when you send her home, no rush :D
     
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  20. Saint.V8

    Saint.V8 Dyed-in-the-wool 100% RR Junkie

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    Does this mean I get sloppy thirds again lads....??

    Come on, when do I get to go first?
     
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