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Touch screen not working after carplay upgrade attempt (11.6" gen 4)

Discussion in 'Gen 5 Prius Audio, Electronics and Infotainment' started by beef jiggles, Jul 23, 2024 at 10:09 AM.

  1. beef jiggles

    beef jiggles Member

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    2017 Prius
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    Curious if anyone has come across this.

    I am in the middle of swapping the LCD screen only from my 2017 unit into a 2020+ carplay unit with a broken LCD screen.

    I basically disassembled the units separating the "computer" and satelite radio portions from the screens/trim and swapped them.

    The screens appear to be identical and have the same connectors. However, neither unit works when I hook them up to test.

    Wondering if I messed something up, or if this is simply not possible. Does anyone know?

    Both units turn on, the screen lights up, volume buttons/hvac buttons to right/left are operable. Everything works except I get no response on the touchscreen if I press it.
     
    #1 beef jiggles, Jul 23, 2024 at 10:09 AM
  2. Hammersmith

    Hammersmith Senior Member

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    Wrong forum(it should have gone into the gen4 section), but the problem is likely that they just won't work together. To fix the 2020 unit, I think you're going to need a replacement screen from an identical unit. I remember TheCarCareNut talking about how finicky the head units could be in one of his videos, but I have no idea which one it was(it was a small section of a video about a completely different topic - which I don't remember).

    I believe there's going to be a number printed on either the front of the unit or maybe on a side. You're going to need to find a screen from a matching unit with a matching number. Just because it's from the same model year, or it has the same part number, is no guarantee. It sounded like this was a frustrating issue even for trained Toyota techs.



    But take this all with a grain of salt since I have no direct experience with the issue and am going off of a half remembered video I watched over a year ago.
     
    #2 Hammersmith, Jul 23, 2024 at 11:32 AM
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