red triangle of death

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by ub2u4me, Feb 5, 2026 at 7:40 PM.

  1. ub2u4me

    ub2u4me New Member

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    Hello everyone, i have a 2006 prius that i just replaced 6 battery cells and have tested all the cells twice using a headlight bulb for 5 mins each test, all cells tested at 7.2 volts and higher, my problem is that when i install the battery and put my key phob in the ignition it gives me a red triangle right away and i can't get the motor to run , usually it atarts when i depress the gas pedel a bit . any ideas out there ?
     
    #1 ub2u4me, Feb 5, 2026 at 7:40 PM
  2. Tombukt2

    Tombukt2 Senior Member

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    Yes take some pictures check all your connections is your safety plug all the way in and slammed all the way down into its receptacle that tells it it's in place . Connections at orange cabeling in battery?.. you need a real scan tool like elm 327 n car scanner app.
     
    #2 Tombukt2, Feb 6, 2026 at 10:30 AM
  3. ChapmanF

    ChapmanF Senior Member

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    Please post the trouble code(s).
     
    #3 ChapmanF, Feb 6, 2026 at 10:41 AM
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