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Thread: OBC Screen Replacement?

  1. #1
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    OBC Screen Replacement?

    My screen has been dead since I bought the car, but it only bled over the bottom part. It still lights up, and the tops of the digits are visible, so I feel like the unit is probably fine. Could I just replace the screen without an obscene amount of hassle? If so, anybody know where I could come about a replacement?

  2. #2
    richardodn's Avatar
    richardodn is offline Old Guy BMW CCA Member
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    Just pick up a good used one. Swap the coding plug from yours to the replacement.
    "Howdy, Folks!"

    1986 Delphin 528e - Roof rack equipped lumber hauler.
    1989 Zinnoberrot 325iX Sedan - I miss this car. (Deceased)
    1998 Avus Blau 328iC - Someone else's project now
    2008 Platinum-Beige X3 3.0si - Current project
    2012 Alpine White X3 xDrive35i - My new snowmobile.
    2020 Estoril Blue 440i xDrive cabrio - This car is a blast to drive.

  3. #3
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    Just for clarification- you mean I should buy the whole computer? Does that imply it's simpler or cheaper or something?

  4. #4
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    Quote Originally Posted by 164353 View Post
    Just for clarification- you mean I should buy the whole computer? Does that imply it's simpler or cheaper or something?
    The "OBC" in the panel is just an interface device, like your keyboard, video & mouse, & the display bleeding is common. As Richard says, the easy option is to swap it out for one that works, but if you want to do some searching around you'll find threads that deal with renewing them.

    If I can't stuff young Mr. Johnson up the tailpipe, I don't want it ...

  5. #5
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    There is no way of just replacing the display of the OBC unit, I have tried already. Only way is to find another unit, as the others have said.

    1993 MauritiusBlau E30 325iC

  6. #6
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    Yup, if its a 6 button you can get it for about 20 bucks hsipped to your door. if a 13 button about 35. Check out some ofthe e30 specific sites.

  7. #7
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    Yup, if its a 6 button you can get it for about 20 bucks hsipped to your door. if a 13 button about 35. Check out some ofthe e30 specific sites.

  8. #8
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    what and where is the coding plug?

  9. #9
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    My leds are out

  10. #10
    richardodn's Avatar
    richardodn is offline Old Guy BMW CCA Member
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    When you remove the OBC unit you'll see it on the back. It's a little module with a small circuit board and memory chip inside. The chip holds some constants that the OBC uses for calculations.

    @bimmernoob11 - When you say your LEDs are out, do you mean the backlight is out? If so, there is a light that can be replaced. The part is around $30. Some people have converted the light to LEDs.
    "Howdy, Folks!"

    1986 Delphin 528e - Roof rack equipped lumber hauler.
    1989 Zinnoberrot 325iX Sedan - I miss this car. (Deceased)
    1998 Avus Blau 328iC - Someone else's project now
    2008 Platinum-Beige X3 3.0si - Current project
    2012 Alpine White X3 xDrive35i - My new snowmobile.
    2020 Estoril Blue 440i xDrive cabrio - This car is a blast to drive.

  11. #11
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    Quote Originally Posted by mlbryant8 View Post
    what and where is the coding plug?
    The coding chip tells the OBC what car you have, they're model specific.

    If I can't stuff young Mr. Johnson up the tailpipe, I don't want it ...

  12. #12
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    Quote Originally Posted by Stroke5 View Post
    The coding chip tells the OBC what car you have, they're model specific.
    Coding plugs are the white things in the top-rear of the OBC units

    1993 MauritiusBlau E30 325iC

  13. #13
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    Well lads I know this i a old thread but any help would be great I have a 13 button obc in my e30 and when I switch on the car only the background light comes on there is no writing on the screen does this mean I need a new obc
    Thanks in advance

  14. #14
    richardodn's Avatar
    richardodn is offline Old Guy BMW CCA Member
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    Sounds like it. I assume its blank no matter what function it's on.
    "Howdy, Folks!"

    1986 Delphin 528e - Roof rack equipped lumber hauler.
    1989 Zinnoberrot 325iX Sedan - I miss this car. (Deceased)
    1998 Avus Blau 328iC - Someone else's project now
    2008 Platinum-Beige X3 3.0si - Current project
    2012 Alpine White X3 xDrive35i - My new snowmobile.
    2020 Estoril Blue 440i xDrive cabrio - This car is a blast to drive.

  15. #15
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    So before you go and buy a new one try and just clean the screen. I did this on my 318ti and all the pixels are working now

    Edit: the very next day it went black again and now the clock works momentarily when I press it but that's it. Sad day.
    Last edited by Summerlinbrayde; 05-08-2019 at 11:28 PM.

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