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  1. #1
    myvice
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    Rear Window Defrost Relay PN?

    Please help.


  2. #2
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    Re: Rear Window Defrost Relay PN?

    check the wiring/ETM diagrams http://www.e38.org/e32/
    for your production yea. Check the shape of the spaces of that socket and you should be able to find it in the ETK then.
    The control is made by the IHKA control module.
    The white connector at the back of the IHKA control module is called X610.
    Pin 7 goes to the relay for defogging
    pin 24 goes to relay K8 for front window heater (wiper base).

    The pins are from left to right
    13 12 11 10 9 8 7 6 5 4 3 2 1

    26 25 24 23 22 21 19 18 17 16 18 14


    So, if nothing helps, also open the IHKA module and resolder it.

    More info with regard to IHKA
    To start with the repair, this explains you the whole system
    IHKA Components


    http://ww
    w.bimm
    erboa
    rd.com/foru
    ms/posts/145262/

    Shogun E32 Tech Tips: http://twrite.org/shogunnew/topmenu.html

  3. #3
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    Inner Circle ©154 since: Aug 14, 2003 cheung1 is an unknown quantity at this point cheung1's Avatar
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    Have you checked fuse under rear seat?

    In my case the fuse area was charred (fuse eventually blown), and I think the current drawn to the rear window defrost lines had been too close to the max fuse rating that the contacts to the fuse progressively rose in temperature as the contacts aged and oxidized further. I now replaced the fuse, and did a bit more in re-rerouting the defroster line circuit to reduce current drawn to below half of what it used to be. The latter can work out only because the car is in a mild weather region.Patrick C 88 750 159K

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