Yellow lights at start up, new 12v aux. bat in.

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Bookish Guy, Aug 21, 2018.

  1. Bookish Guy

    Bookish Guy New Member

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    Just had a new 12v auxiliary battery installed. It was difficult to start with multiple lights going on and off, different messages flitting on and off. But after new the new battery in place all is sweet other than...at start up there are 2 yellow lights that momentarily appear above on the left hand side. Is this normal, okay, or...? One yellow light is a swerving auto, the other is a triangle with and "!" in it.
     
    #1 Bookish Guy, Aug 21, 2018
  2. NutzAboutBolts

    NutzAboutBolts Senior Member

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    You said momentarily, so it went away after it’s start up?
     
    #2 NutzAboutBolts, Aug 21, 2018
  3. bisco

    bisco cookie crumbler

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    at start up, all the trouble lights should light for a few seconds during the self test.
     
    #3 bisco, Aug 21, 2018
  4. jzchen

    jzchen Newbie!

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    As long as they turn off and stay off yes no problem.
     
    #4 jzchen, Aug 21, 2018
  5. Bookish Guy

    Bookish Guy New Member

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    Yes. NutzaboutBolts. On, then "READY" pops on and the yellow ones above the READY go off. Sounds like it must be normal! Good. Thanks to all for responses.
     
    #5 Bookish Guy, Aug 22, 2018
    Raytheeagle likes this.
  6. FuelMiser

    FuelMiser Senior Member

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    It is normal for ALL warning lights of all colors (yellow and red) to light temporarily during the power-on sequence. This is designed to make sure they are all functioning. If you want to see it in a slower pace, try pressing the power button twice with your foot off the brake. Most warning lights will remain on at this point. After examining the lights on the display, press the brake pedal and the power button one more time to bring the car to READY. Warning lights should go out shortly after car goes to READY.
     
    #6 FuelMiser, Aug 22, 2018
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