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Prius Fob not working correctly

Discussion in 'Gen 2 Prius Main Forum' started by Prius Fleet Owner, Nov 15, 2018.

  1. Prius Fleet Owner

    Prius Fleet Owner Junior Member

    Joined:
    Feb 28, 2018
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    Location:
    Plymouth
    Vehicle:
    2006 Prius
    Model:
    Active
    all.

    I have recently changed the CR 2032 3V battery for the fob but since then it randomly seems to lock the car and keeps flashing attempting to lock the car continuously despite the car already being locked.

    When it does this it is very difficult to unlock the car due to the fob continously trying to lock the car and only after pressing the unlock button maybe 5 or 6 times it will unlock as it should do.

    It decides to stop flashing/locking the vehicle whenever it decides to and can't understand why it is doing this.

    I am not aware that the fob needs to be synchronized with the car on Prii so was wondering if anyone knows what is causing the fob to operate in this strange manner.

    Any help would be appreciated.
     
    #1 Prius Fleet Owner, Nov 15, 2018
  2. Skibob

    Skibob Senior Member

    Joined:
    Sep 14, 2018
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    Location:
    Northern California
    Vehicle:
    2006 Prius
    Model:
    N/A
    Some ideas:
    The battery you bought is bad
    Your 12v car battery is weak
    The button on the fob is stuck

    Is this an SKS car?
    What year is the car?
     
    #2 Skibob, Nov 15, 2018
    kenoarto likes this.
  3. bisco

    bisco cookie crumbler

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    Location:
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    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    2006
     
    #3 bisco, Nov 15, 2018
  4. Skibob

    Skibob Senior Member

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    You must see something I don’t see on my phone. ;)
     
    #4 Skibob, Nov 15, 2018
  5. bisco

    bisco cookie crumbler

    Joined:
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    yep, hate the phone info
     
    #5 bisco, Nov 15, 2018
  6. Prius Fleet Owner

    Prius Fleet Owner Junior Member

    Joined:
    Feb 28, 2018
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    Location:
    Plymouth
    Vehicle:
    2006 Prius
    Model:
    Active
    It is a 2006 Prius.
    12v battery is less than 12 months old and is a dealer (Toyota original battery replacement).
    I have put 2 new different batteries in the fob as I thought maybe the battey replacement was faulty etc.
    I used a Sony first time and the 2nd replacement is a Panasonic.
     
    #6 Prius Fleet Owner, Nov 15, 2018
  7. Prius Fleet Owner

    Prius Fleet Owner Junior Member

    Joined:
    Feb 28, 2018
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    Location:
    Plymouth
    Vehicle:
    2006 Prius
    Model:
    Active
    My theory is the button is stuck but it has only started doing this since the battery replacement (I think).
    I have tried pressing the button in different ways to try and solve this problem assuming this is the cause.
     
    #7 Prius Fleet Owner, Nov 15, 2018
  8. PriusCamper

    PriusCamper Senior Member

    Joined:
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    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    I had this problem with my old FOB case that was falling apart... Bought a new case on Ebay for $10 and razorbladed the existing FOB in half and swapped out all the internal pieces and that solved it. But perhaps just to keep me guessing, it still has the problem with automatically locking on its own on rare occasions. But hey, better to have it randomly lock than randomly unlock. :)
     
    #8 PriusCamper, Nov 15, 2018
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