1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Key Battery

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by The Bradleys, Mar 18, 2014.

  1. The Bradleys

    The Bradleys Junior Member

    Joined:
    Mar 18, 2014
    1
    0
    0
    Location:
    Searcy, Arkansas
    Vehicle:
    2010 Prius
    Model:
    N/A
    Just bought a used 2010 Prius. One key works, the other doesn't. On the non-working key, the red LED does not light when I push a button, but the battery measures 3 volts. Is it possible the battery needs replacement anyway? If not, what else could be wrong?
     
    #1 The Bradleys, Mar 18, 2014
  2. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    16,480
    8,397
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    I would try replacing the battery and go from there.
     
    #2 JC91006, Mar 18, 2014
  3. xliderider

    xliderider Senior Member

    Joined:
    Apr 19, 2012
    7,869
    3,116
    0
    Location:
    Honolulu, HI
    Vehicle:
    2011 Prius
    Model:
    Three
    Who knows? The fob could've gone swimming in the ocean or a chlorinated pool, or through a wash cycle or two. You get the idea ...

    Sorry to be a downer, but if it isn't the battery, then it's all unknown as this was a preowned set.
     
    #3 xliderider, Mar 18, 2014
  4. szgabor

    szgabor Active Member

    Joined:
    Jul 29, 2009
    993
    175
    0
    Location:
    Oceanside NY
    Vehicle:
    2012 Prius
    Model:
    Two
    quick check would be switch the battery from the working one to the other (mark it though so you do not get confused). this can quickly eliminate the battery.

    then you can go from there.... to replace the fob is not trivial you need some extra equipment. and dealer will charge quite a bit, but better replace the second while you have one working if you loose that it WILL be a lot more expensive.
     
    #4 szgabor, Mar 18, 2014
    JC91006 likes this.
  5. RRxing

    RRxing Senior Member

    Joined:
    Jul 7, 2009
    2,520
    1,791
    0
    Location:
    NEPA
    Vehicle:
    Other Hybrid
    Model:
    Limited
    Inverted battery?
     
    #5 RRxing, Mar 18, 2014
(You must log in or sign up to post here.)