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Cannot re-assemble key fob

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Brittany182, Dec 25, 2015.

  1. Brittany182

    Brittany182 New Member

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    Merry Christmas! For some reason I thought tonight would be a good night to try to replace key fob battery. Turns out we didn't have the right size ones, then when my dad tried to put it back together after opening up, he cannot get the pieces to fit back together. They stack up too thick to pop the plastic back together. This rubber piece seems to be the culprit. It doesn't fit in to the grooves and doesn't match up with the little plastic nubs. Anyone else have trouble with this before? Or any advice on how I can get to work on Christmas Day? Of course my spare fob is at my apartment and I'm home with my family for the holiday. Thanks in advance!
     

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    #1 Brittany182, Dec 25, 2015
  2. xliderider

    xliderider Senior Member

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    I've replaced the batteries on both fobs for my 2 Toyota vehicles and didn't run into much difficulty getting it back together.

    Have you tried searching for a video on YouTube that details disassembly and reassembly of the key fob?
     
    #2 xliderider, Dec 25, 2015
  3. Brittany182

    Brittany182 New Member

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    Yup been watching every video and none show anything like the problem we're having :(
     
    #3 Brittany182, Dec 25, 2015
  4. Brittany182

    Brittany182 New Member

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    The plastic spikes on the middle piece do not have any corresponding holes on the rubber piece, which seems to be the problem. Not sure if poking holes into the rubber would solve the problem.
     

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    #4 Brittany182, Dec 25, 2015
  5. xliderider

    xliderider Senior Member

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    OK, this is my Camry fob, but if your prius fob is similar it might help.

    [​IMG]

    Look for the corner on the back of the front piece with the small hole. Now, insert the clear rubber piece with the small rubber nub in the underside of the corner in the hole.

    Then insert the circuit board piece in the rubber tray with the battery side facing away from the nub/hole corner.

    Hope that helps!
     
    #5 xliderider, Dec 25, 2015
    Last edited: Dec 25, 2015
    Brittany182 likes this.
  6. Brittany182

    Brittany182 New Member

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    Disregard!!! We've been placing it on the wrong side this whole time, of course. Holiday stress! Maybe someone will make this silly mistake in the future and come across this thread :)
     
    #6 Brittany182, Dec 25, 2015
  7. xliderider

    xliderider Senior Member

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    So it's all together now? :D
     
    #7 xliderider, Dec 25, 2015
  8. mrbigh

    mrbigh Prius Absolutum Dominium

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    lesson: do not full around with something you can't handle
    The best full proof learning guide is, take pictures with a phone or camera as you go along with an unfamiliar task.
     
    #8 mrbigh, Dec 25, 2015
  9. bisco

    bisco cookie crumbler

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    welcome! i tried to change my battery and ended up with pieces all over the floor. it kind of explodes when you open it up. not the best design in the world. glad it all came together for you! happy Christmas!(y)
     
    #9 bisco, Dec 25, 2015
  10. David Beale

    David Beale Senior Member

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    And the lesson luckily not learned, is DO NOT modify a perfectly designed FOB just to get it back together!
     
    #10 David Beale, Dec 25, 2015
  11. 48mpg

    48mpg Member

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    Lesson ..its spelled "FOOL" not full :D

    full is when the gas tank cant hold anymore gas
     
    #11 48mpg, Dec 25, 2015
  12. RRxing

    RRxing Senior Member

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    Always be careful to observe how something comes apart in order to put it back together correctly. Be slow and methodical. No modifications (e.g. "holes") are necessary.
     
    #12 RRxing, Dec 25, 2015
  13. Mendel Leisk

    Mendel Leisk Senior Member

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    My impression too, when I changed fob batteries: very fragile, finicky device.
     
    #13 Mendel Leisk, Dec 25, 2015
  14. bisco

    bisco cookie crumbler

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    the biggest problem with the fob is when your prying it apart. i think i will put an elastic around it next time.

    also, when you go to snap it back together, it feels like something is binding, and you're afraid you're going to break it. but there's really nothing wrong.
     
    #14 bisco, Dec 25, 2015
  15. lenjack

    lenjack Active Member

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    wrong side or upside down rubber is easy to do.
     
    #15 lenjack, Dec 26, 2015
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  16. ftl

    ftl Explicator

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    Just so long as it's only on your fob...:eek:
     
    #16 ftl, Dec 26, 2015
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