Red triangle and 300+ miles from Toyota-capable mechanic

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by lbman, Dec 29, 2021.

  1. bisco

    bisco cookie crumbler

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    is the battery icon filling up as you downhill?
     
  2. Pointguard11

    Pointguard11 New Member

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    Keep us posted. I’m curious what was the problem.
     
  3. Hanging on with 286k

    Hanging on with 286k Junior Member

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    Curious because my 2007 is doing something similar, but only going up hills! No codes. Intermittent Red Triangle of Death. Not every drive. Never when I take her to mechanic!
     
  4. JC91006

    JC91006 Senior Member

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    You should check you oil level or coolant level, it probably is very low (to non existent)
     
    Hanging on with 286k likes this.
  5. mr_guy_mann

    mr_guy_mann Senior Member

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    AFAIK, only low oil pressure, door open (when in drive), or possibly high engine temperature can trigger a master warning light without setting a code.

    If there is something else , there should be a "historic" code stored in whatever ecu set it. Not every repair shop has a capable scantool that can talk to all 15-16 ecu's on a Gen2.

    There's a sticky thread at the top of the Technical Discussion forum that reviews several OBD apps and devices if you want to be able to scan things yourself.

    Posted via the PriusChat mobile app.
     
  6. Hanging on with 286k

    Hanging on with 286k Junior Member

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    Thank you. Oil is consistently fine so I will check coolants.
     
  7. bisco

    bisco cookie crumbler

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    maybe a bad door switch
     
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