FOB stopped working -- not opening doors or starting car

Discussion in 'Gen 2 Prius Technical Discussion' started by CIA_Guy, Aug 25, 2019.

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  1. CIA_Guy

    CIA_Guy Junior Member

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    I have a 2007 with 3 FOBs. One has sat in a drawer unused for almost a year. When I went to use it, it wouldn't unlock the doors. It also didn't work to start the car (even when inserted in the slot). The other 2 FOBs work just fine. This one is essentially new, it's just been stored away. Battery in it is good.

    Is there something that can cause the car to "forget" one of the FOBs?
     
    #1 CIA_Guy, Aug 25, 2019
  2. Raytheeagle

    Raytheeagle Senior Member

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    What is the battery voltage?
     
    #2 Raytheeagle, Aug 25, 2019
  3. frankv64

    frankv64 Junior Member

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    I would change the battery in it if you haven’t already. And check the voltage on your 12v battery. I have also 3 fobs for my 09 and they all still work. Two of them are sitting in my drawer for 4 years now


    iPhone ? Pro
     
    #3 frankv64, Aug 25, 2019
  4. bisco

    bisco cookie crumbler

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    has it ever worked? might just be incorrect fob. should work in the slot with a dead battery

    are the other two fobs working?
     
    #4 bisco, Aug 25, 2019
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  5. CIA_Guy

    CIA_Guy Junior Member

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    Main battery is fine -- both of the other FOBs work perfectly. This one worked fine when put away.
     
    #5 CIA_Guy, Aug 25, 2019
  6. Raytheeagle

    Raytheeagle Senior Member

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    So the voltage of the battery in the fob that is not working is?
     
    #6 Raytheeagle, Aug 25, 2019
  7. CIA_Guy

    CIA_Guy Junior Member

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    New battery. I'll replace it again, but wouldn't it still work for starting the car if it is put in the slot? It's supposed to work there even when its battery is dead.
     
    #7 CIA_Guy, Aug 25, 2019
  8. CIA_Guy

    CIA_Guy Junior Member

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    3V -- full CR2032 voltage. No change with new battery
     
    #8 CIA_Guy, Aug 25, 2019
  9. CIA_Guy

    CIA_Guy Junior Member

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    Yes it worked and the other two are working. They are the only FOBs I have, so I haven't gotten them mixed up
     
    #9 CIA_Guy, Aug 25, 2019
  10. bisco

    bisco cookie crumbler

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    maybe a button is stuck
     
    #10 bisco, Aug 26, 2019
  11. Skibob

    Skibob Senior Member

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    Do you carry one of the other 2 working fobs with you when you try to use it? Try walking up with just the non working fob and see what happens.
     
    #11 Skibob, Aug 26, 2019
  12. CIA_Guy

    CIA_Guy Junior Member

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    Nope. That's how I know it isn't working. Door doesn't unlock and car won't start (even with fob in the slot). I'm beginning to think it spontaneously died in the drawer.....
     
    #12 CIA_Guy, Aug 26, 2019
  13. Skibob

    Skibob Senior Member

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    Well, darn. Hoped I could help but I got nothing. Best of luck Amigo.
     
    #13 Skibob, Aug 27, 2019
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