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My EV, ECO, and PWR mode buttons don't function when pressed

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Hub, Apr 12, 2016.

  1. Hub

    Hub New Member

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    No matter how I press or hold them nothing changes on the display. Unfortunately nothing turns up for me on a google or PC search for this issue so that can't be good for an easy fix. I saw one thing about a bad switch but not details.

    I just bought this 2010 Prius with 52k miles yesterday. Had no idea what these buttons even were when buying. Ideally the dealership will fix, but hopefully it's also in the realm of DIY. Thoughts?

    ETA: Now I see that my hazards don't work either and assume that button is tied to same switch or fuse or whatever as the mode buttons. Sure I'm an idiot for not noticing that when I bought the car, but this gives me optimism that the dealership will make it right since it's a safety feature that they didn't disclose was nonfunctional. Obviously they didn't know either.
     
    #1 Hub, Apr 12, 2016
    Last edited: Apr 12, 2016
  2. bisco

    bisco cookie crumbler

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    welcome! not sure i've ever heard this before. hopefully just a fuse. what mode are you stuck in?
     
  3. Hub

    Hub New Member

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    It doesn't show a mode so I assume it's just in the default normal mode. Just took the manual out and checked fuses. Nothing specifically points to the hazards or this set of buttons as a fuse and I couldn't find a blown one in the dash or engine. Didn't pull them all, but all other electronics seem to work.
     
  4. bisco

    bisco cookie crumbler

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    is it a toyota dealer? i'm sure they'll take care of it.
     
  5. sfv41901

    sfv41901 Masta S

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    Try popping the panel up.

    My guess is that maybe the previous owner had a Stage 10 push button shifter & when he traded it in didn't plug it back in

    There are 2 plugs to look for. A Blk & a wht plug


    iPhone ?
     
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  6. Hub

    Hub New Member

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    OK thanks. I'll do that. I got it from a Mitsubishi dealer that is located next door to a Toyota dealer. I also assume they'll take care of it but if I can get the plastic popped up confidently then I'll try it myself 1st.
     
  7. bisco

    bisco cookie crumbler

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    there's a thread here somewhere, with pics that instruct on installing the stage 10 shifter.
     
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  8. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Look under the dash with a light, for signs of wire tampering.
     
  9. Hub

    Hub New Member

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    This was it. The black plug under the panel was unplugged. Plugged it in and the EV functions and hazard light button now work. And now we know the white plug is only for the Park button.

    Thanks all for helping me resolve this! Only down side is my fingers hurt a bit from trying to get that panel up.

    And thanks for this too. Made the search easy for how to get the plastic panel up. I swear mine was harder to get off than everyone else's though.
     
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  10. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Excellent!
     
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  11. sfv41901

    sfv41901 Masta S

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    I'm glad that's all it was. Disaster avoided :D

    If the wht plug for the Park button was unplugged, it would of thrown a DTC & hybrid error
     
  12. bisco

    bisco cookie crumbler

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    nice call, sean!(y)
     
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