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05 prius dash lights flash, won’t turn on

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by ainsley34, Aug 15, 2020.

  1. ainsley34

    ainsley34 New Member

    Joined:
    Aug 15, 2020
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    Location:
    Los Ángeles
    Vehicle:
    2005 Prius
    Model:
    N/A
    Hello, my ‘05 Prius was occasionally turning on with no dash lights but would drive fine without them. Now, it won’t turn on at all. All the dash lights flash when I hit the power button and then squares pop up in the dash for a moment. I had a brand new battery installed 2 months ago. They also reprogrammed the key fob to work (previously had to use manual key to unlock/lock). I’m wondering if this has to do with the fob or another issue. Any help is much appreciated! The shop I got the battery replaced is closed for the weekend so trying to troubleshoot myself.
     
    #1 ainsley34, Aug 15, 2020
  2. JC91006

    JC91006 Senior Member

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    Vehicle:
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    Model:
    II
    Did you buy a brand new battery? Whenever there's a no start issue, the first place to check is the 12v battery.
     
    #2 JC91006, Aug 15, 2020
  3. Kenny94945

    Kenny94945 Active Member

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    Location:
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    Vehicle:
    2016 Prius v wagon
    Model:
    Four
    Not sure if my 2 cent comment will help.
    Seems the problem is/ was intermittent.
    Dash was working ever so often a few months ago, now completely failed.
    Dash lights still currently work at start up then goes dark/ blank once the vehicle is started.

    My comment...juggle the dash light brightness adjustment switch.
    Sorry no greater lead than that, could be loosen connect behind the dash?
    FWIW I do not think this is FOB or 12v battery issue nor a fuse issue, but inspecting the dash light fuse could be worthwhile.
    Good luck hunting :)
    Let us know what you find.
     
    #3 Kenny94945, Aug 15, 2020
  4. dolj

    dolj Senior Member

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    Location:
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    Vehicle:
    2007 Prius
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    It sounds like your combination meter (CM) is in the latter stages of complete failure. This can be repaired at the dealer for about $800 or you can contact Matt @Texas Hybrid Batteries for their solution which will cost you ~$150 for a repaired unit that has a lifetime warranty, odometer programmed to your milage and when you return your broken CM back to them they will give you a refund of ~$75 for it. The only catch you (or a good friend) will need to remove the old and install the new one, which will involve the removal of some of the dash. There are YouTube videos to follow.
     
    #4 dolj, Aug 16, 2020
  5. edthefox5

    edthefox5 Senior Member

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    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    Which battery was replaced and how much did you pay?
     
    #5 edthefox5, Aug 16, 2020
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