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DRL fog lights stopped working after repair

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by icyrius, May 14, 2023.

  1. icyrius

    icyrius Active Member

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    Hello,

    Last weekend I swapped my son’s 2014 Prius headlights for new ones. I only unplugged the large socket on the drivers side to fully remove the bumper. Now the DRL fog lights would not turn on. The turning signals work perfectly. Only the LED fog lights would not work.

    Is there another cable that I missed connecting?

    IMG_0229.jpeg
     
    #1 icyrius, May 14, 2023
  2. xliderider

    xliderider Senior Member

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    Maybe you didn't fully seat the plug? Raise the front end and place it on jackstands, or use ramps.

    You can access the plug/connector from below by undoing the fasteners in the front corner and moving the cover out of the way. Unplug and check the terminals for dirt and grime, or oil, etc. If the terminals look clean, plug in the connector again and make sure it's fully seated and clicked fully into place.

    Test while the front is still on jackstands.

    Posted via the PriusChat mobile app.
     
    #2 xliderider, May 14, 2023
    icyrius likes this.
  3. icyrius

    icyrius Active Member

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    Thank you. I will give it a try and post the results.
     
    #3 icyrius, May 15, 2023
  4. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Were they LEDs before?

    LEDs aren't always a drop-in replacement. They are polarized, where halogen bulbs are not.
     
    #4 Leadfoot J. McCoalroller, May 15, 2023
  5. Mendel Leisk

    Mendel Leisk Senior Member

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    The level that comes from the factory with fog lights also has LED headlights (pictured vehicle does not). Those fog lights I think are halogen. They don’t serve as Daytime Running Lights.

    they don’t really serve any useful function lol; it’s hard to see any difference when they’re on versus off.
     
    #5 Mendel Leisk, May 15, 2023
  6. icyrius

    icyrius Active Member

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    He uses them for safer daylight driving
     
    #6 icyrius, May 15, 2023
    Mendel Leisk likes this.
  7. icyrius

    icyrius Active Member

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    Found the answer here in the chat. These fog lights would not turn on if your parking break is not released. This was so dumb.
    Thanks again Prius Chat and all who contributed.
     
    #7 icyrius, May 15, 2023
    xliderider, Mendel Leisk and Leadfoot J. McCoalroller like this.
  8. xliderider

    xliderider Senior Member

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    #8 xliderider, May 16, 2023
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