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Blank MCU, indicating eMMC failure but EVERYTHING works?!

Discussion in 'Model S' started by Eddyme, Oct 24, 2020.

  1. Eddyme

    Eddyme New Member

    Joined:
    Oct 24, 2020
    Messages:
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    Location:
    Norway
    Hi,

    Yesterday my car turned on as usual but the MCU display never came on, after a few reboots I figured the infamous eMMC issue had finally found its way to my car. After reading a bit on this forum I found some normal symptoms that indicates a eMMC failure, for instance the mph instead of km/h or failure to connect to phone app etc. The weird thing is that in my case everything works, I can supercharge, I can listen to music through voice command (though the MCU reboots every 5 min or so) and I can even use the touch function as long as I remember where the buttons are placed. Has anyone experienced the same thing? Can it really be a eMMC failure with just the display going dark, or might this be something totally different? Any insight would be greatly appreciated!
     
  2. Eddyme

    Eddyme New Member

    Joined:
    Oct 24, 2020
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    Location:
    Norway
    Addition: Its a Model S mid 2014.
     
  3. zanary

    zanary Active Member

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  4. Eddyme

    Eddyme New Member

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    Oct 24, 2020
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    Location:
    Norway
  5. MP3Mike

    MP3Mike Well-Known Member

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    Oregon
    If you shine a bright light on the screen can you see the image? (Maybe just the backlight, or backlight control, failed.)
     
  6. Eddyme

    Eddyme New Member

    Joined:
    Oct 24, 2020
    Messages:
    4
    Location:
    Norway
    Thanks for the suggestion, unfortanately it didn't work. The passenger airbarg is on message has moved permanently to the other display and it seems to me that the car knows the MCU is not displaying and are moving all essential (mandatory) indicators to the other display and tries to reboot every 5 minutes or so...

    [​IMG]
     

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