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key battery low

Discussion in 'Gen 3 Prius Main Forum' started by chip_designer, Oct 22, 2012.

  1. chip_designer

    chip_designer New Member

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    everytime I finish driving, and turn off the car, I get "key battery low" beep and on display message

    any ideas?
     
    #1 chip_designer, Oct 22, 2012
  2. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Must resist, must resist..., oh heck:

    Change the battery?
     
    #2 Mendel Leisk, Oct 22, 2012
    felix mizioznikov and ftl like this.
  3. gliderman

    gliderman Active Member

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    Wow! Same thing happened to me today. But I changed my battery about two months ago for the second time since Sept 2009.

    I have been driving around running errands today and it only happened on my first stop. Checked out the battery when I got home and it is full strength.

    I hope my fob isnt going bad.

    Anyone had FOB failures on 2010?
     
    #3 gliderman, Oct 22, 2012
  4. xliderider

    xliderider Senior Member

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    Change the battery, and even if the battery dies completely, you can supposedly hold the fob directly next to the Start button and it should work.
     
    #4 xliderider, Oct 22, 2012
  5. mad-dog-one

    mad-dog-one Prius Enthusiast

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    Mail your FOB to me, along with $99.99 cash and I'll do a complete refurb and return the FOB to you, as good as new. :)
     
    #5 mad-dog-one, Oct 22, 2012
  6. David Beale

    David Beale Senior Member

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    If you put the FOB in your pocket along with your cell phone it may do this. Or there may be other things interfering with the FOB. Such as military comms.
     
    #6 David Beale, Oct 22, 2012
  7. chip_designer

    chip_designer New Member

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    what a relief. I never thought the key battery warning is the key I carry with me. I thought key battery low = "some KEY component of the battery system is low" which I was thinking it should be in the drivetrain warranty
     
    #7 chip_designer, Oct 22, 2012
  8. pjksr02

    pjksr02 Active Member

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    A-ha! You've blown your cover, you dealer service department!
     
    #8 pjksr02, Oct 22, 2012
  9. bisco

    bisco cookie crumbler

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    which 'other non hybrid' are you driving?
     
    #9 bisco, Oct 22, 2012
  10. stream

    stream Senior Member

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    :D
     
    #10 stream, Oct 23, 2012
  11. dmvp

    dmvp Member

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    Is it possible that your other FOB is also in the vehicle? I had the warning, changed my battery...and it took a few drives to make the warning go away. A week or so later I saw the warning again, but also realized my husband had his FOB along as well...so we changed his battery too. No warning since.
     
    #11 dmvp, Oct 23, 2012
  12. gliderman

    gliderman Active Member

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    No, extra FOB tacked on bulletin board in office. It was the first time I have seen that warning and it is still a mystery to me. There may have been some interference, but I cant think of any other reason. I hope the FOB is not going out. Battery is fine and enclosure is sealed.
     
    #12 gliderman, Oct 23, 2012
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