1. Offline

    chip_designer New Member

    Member Since:
    Apr 21, 2009
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    Location:
    silicon valley
    Your Vehicle Year:
    Other Non-Hybrid
    Model:
    IV
    everytime I finish driving, and turn off the car, I get "key battery low" beep and on display message

    any ideas?
  2. Offline

    Mendel Leisk Senior Member

    Member Since:
    Oct 17, 2010
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    Location:
    Greater Vancouver, BC, Canada
    Your Vehicle Year:
    2010 Prius
    Model:
    N/A
    Must resist, must resist..., oh heck:

    Change the battery?
    felix mizioznikov and ftl like this.
  3. Offline

    gliderman Member

    Member Since:
    Aug 2, 2011
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    Location:
    Texas
    Your Vehicle Year:
    2010 Prius
    Model:
    IV
    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?
  4. Online

    xliderider Senior Member

    Member Since:
    Apr 19, 2012
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    2,602
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    Location:
    Honolulu
    Your Vehicle Year:
    2011 Prius
    Model:
    Three
    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.
  5. Offline

    mad-dog-one Prius Enthusiast

    Member Since:
    Dec 31, 2009
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    Location:
    Whereabouts Unknown
    Your Vehicle Year:
    2010 Prius
    Model:
    V
    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. :)
  6. Offline

    David Beale Senior Member

    Member Since:
    Jul 24, 2006
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    Location:
    Edmonton Alberta
    Your Vehicle Year:
    2012 Prius
    Model:
    N/A
    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.
  7. Offline

    chip_designer New Member

    Member Since:
    Apr 21, 2009
    Posts:
    50
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    Location:
    silicon valley
    Your Vehicle Year:
    Other Non-Hybrid
    Model:
    IV
    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
  8. Offline

    pjksr02 Member

    Member Since:
    Nov 2, 2009
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    Location:
    Connecticut
    Your Vehicle Year:
    2010 Prius
    Model:
    III
    A-ha! You've blown your cover, you dealer service department!
  9. Offline

    bisco cookie crumbler

    Member Since:
    May 11, 2005
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    17,487
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    Location:
    boston
    Your Vehicle Year:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    which 'other non hybrid' are you driving?
  10. Offline

    stream Senior Member

    Member Since:
    May 12, 2008
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    Location:
    Long Island, NY
    Your Vehicle Year:
    2010 Prius
    Model:
    V
    :D
  11. Offline

    dmvp Member

    Member Since:
    Jun 16, 2009
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    Location:
    Outskirts of Chicago
    Your Vehicle Year:
    2010 Prius
    Model:
    IV
    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.
  12. Offline

    gliderman Member

    Member Since:
    Aug 2, 2011
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    484
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    Location:
    Texas
    Your Vehicle Year:
    2010 Prius
    Model:
    IV
    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.

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