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Tail light randomly dimming

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by icyrius, Dec 10, 2019.

  1. icyrius

    icyrius Active Member

    Joined:
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    Florida, USA
    Vehicle:
    2014 Prius v wagon
    Model:
    Three
    Hello, my 2012’s third breaking light starting doing this at random. It would dim occasionally like the shown pictures.

    Any ideas on what could be causing this?

    Thanks
    E999710B-F5C4-401D-B565-FFAEE6376212.jpeg 56308CB9-0734-4BB6-978B-5195A17EB332.jpeg
     
    #1 icyrius, Dec 10, 2019
  2. Mendel Leisk

    Mendel Leisk Senior Member

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    2010 Prius
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    Touring
    Check the connections, loose or corroding?

    How did you come to notice this, doing a light check? That's commendable.
     
    #2 Mendel Leisk, Dec 11, 2019
  3. Attila Fekete

    Attila Fekete Member

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    II
    If the other break lights don’t do it, probably the cable has broken isolation and gets 12V or ground - I don’t know by heart which one is switched.
     
    #3 Attila Fekete, Dec 11, 2019
  4. sam spade 2

    sam spade 2 Senior Member

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    Since it looks like one element goes out completely when it does that, there may be a defect in the "light bar" itself.
     
    #4 sam spade 2, Dec 11, 2019
  5. icyrius

    icyrius Active Member

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    Location:
    Florida, USA
    Vehicle:
    2014 Prius v wagon
    Model:
    Three
    My son just happened to be driving my car and I was driving his right behind.
     
    #5 icyrius, Dec 11, 2019
    Mendel Leisk likes this.
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