Key Fob Security

Discussion in 'Gen 5 Prius Main Forum' started by Hans Unrat, Nov 18, 2025 at 8:32 PM.

  1. Hans Unrat

    Hans Unrat Junior Member

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    2017 Prius Prime
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    Prime Premium
    I ran across an advertisement for a Faraday bag (which is insulated to stop thieves from copying your fob signal)- after a short web search I discovered that one can de-activate Toyota and Lexus fobs by pressing and holding the lock button while twice pressing the unlock button on the fob. To re-activate, simply press the unlock button to enter the car (when locked, the door will not open by grabbing the handle). Of course, this may be mentioned in the owner’s manual as well, this is for those who haven’t read the whole thing like me.
     
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  2. ChapmanF

    ChapmanF Senior Member

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    2010 Prius
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    IV
    Cool!

    Doesn't seem to do anything with my 2010 Gen 3 though.
     
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  3. Templeton

    Templeton Member

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    Vehicle:
    2024 Prius Prime
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    SE
    We use a little faraday box (countless varieties of them sold on amazon), that is far easier to open and close than a bag. And that's where the fob always sits when our gen5 is in the driveway. Because deactivating the fob with button pushes after every car trip would be a huge pain, or so l would think.