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FOB works but not transmitting

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Mario17, Mar 18, 2016.

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  1. Mario17

    Mario17 New Member

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    all

    One of my FOB partially stopped working, so I can't use all 3 keys on it.
    at the same time my Prius senses it, I can start car when I have it (either inserted or in pocket).
    I still can lock car by pushing outside key on door handle, I still can open trunk on closed car.

    So I think problem isolated just to those keys operations, something got broken.
    I read all horror stories about getting new one, so maybe somebody can share his/her knowledge how to fix or replace maybe some part of fob circuit.

    I still have second FOB key which works OK

    ** and surely enough all tested on new battery.


    Thanks all
    mario
     
    #1 Mario17, Mar 18, 2016
  2. Augustus88

    Augustus88 Junior Member

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    Smart key functions still work, but the lock, unlock, and panic buttons on the fob do not work?

    I believe the smart key functionality is controlled by a separate small black box that is inside the key and does not require a battery to work. Someone correct me if I am wrong...
    If the above is true, then most likely the circuit board inside your fob has failed, as it is not required for Smart key functionality.
     
    #2 Augustus88, Mar 18, 2016
  3. JC91006

    JC91006 Senior Member

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    There's a stuck button. 1 of the 3 buttons on there is stuck, use a sharp exacto knife and prey it free
     
    #3 JC91006, Mar 18, 2016
    usnavystgc likes this.
  4. Mario17

    Mario17 New Member

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    No stuck buttons, no physically all clicked, also tested with second remote.
     
    #4 Mario17, Mar 21, 2016
  5. JC91006

    JC91006 Senior Member

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    If you are certain there are no stuck keys and you've tried a new battery, then you have something wrong with your FOB
     
    #5 JC91006, Mar 21, 2016
  6. Mario17

    Mario17 New Member

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    yes, I thought I can change just some piece of fob , it's transmitter part, and keep all crypt stuff as is.
    @JC, you prius history is very impressive!!!
    2015 Prius Plug in base
    2015 Prius Two
    2010 Prius V
    2008 Prius II
    2006 Prius III
    2005 Prius V
     
    #6 Mario17, Mar 21, 2016
  7. JC91006

    JC91006 Senior Member

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    That's not history, that's current.
     
    #7 JC91006, Mar 21, 2016
  8. bisco

    bisco cookie crumbler

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    have you looked at the circuit board, and the switches under the keys?
     
    #8 bisco, Mar 21, 2016
  9. laroleta

    laroleta New Member

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    bisco, I have a similar problem with a lock button that does not register. Any tips on what to look for on the circuit board and switches?

    The previous owner broke the rubber button cover so the lock button switch and a portion of the top circuit board is exposed (probably what caused the issue in the first place)

    Thanks
     
    #9 laroleta, Mar 8, 2017
  10. bisco

    bisco cookie crumbler

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    i think your best bet is to find a replacement on ebay and swap the guts. do you have a second fob?
     
    #10 bisco, Mar 9, 2017
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