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Prius key not working

Discussion in 'Gen 2 Prius Technical Discussion' started by Qiao Chen, Sep 21, 2022.

  1. Qiao Chen

    Qiao Chen Junior Member

    Joined:
    Nov 25, 2014
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    Location:
    brighton
    Vehicle:
    2007 Prius
    Model:
    II

    I need some advice. The key for my Prius suddenly not working. I replace the battery and still not working. Both fobs fail to lock/unlock. The button under the steering wheel for resetting the controller, which I have also tried pressed several times.. It's a UK Prius.
    The weird thing is both fobs are functioning if I near the car from the driver's side of the window. If I am at the front or the back of the car, they don't work. The 12V battery has a voltage of 12.36V immediately after 15 miles of driving. Is the battery causing the problem?
    Hope I can get some advice. Thanks.
     
    #1 Qiao Chen, Sep 21, 2022
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,784
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    it could be. check the voltage in the morning before starting the car. if you can get a free load test, that's even better.
    check the voltage on the fob battery as well, should be 3.3v
     
    #2 bisco, Sep 22, 2022
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