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Engine turning off and on

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by tylerjames, Dec 29, 2015.

  1. tylerjames

    tylerjames Junior Member

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    Vehicle:
    2007 Prius
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    Two
    Hello. I understand the engine turns on and off frequently (coming to a stop it turns off, then when going it turns on)

    I have noticed that sometimes when at the stop it will turn off, then immediately back on, and off again, even with my foot on the break. is this normal, or a sign?

    Thanks,
     
    #1 tylerjames, Dec 29, 2015
  2. bisco

    bisco cookie crumbler

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    not really. is your battery indicator acting strangely?

    maybe check your 12 volt. is the heat on?
     
    #2 bisco, Dec 29, 2015
  3. tylerjames

    tylerjames Junior Member

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    battery indicator seems normal. Yes sometimes my heat is on. Would that cause it to keep the engine on? I thought that was only AC
     
    #3 tylerjames, Dec 29, 2015
  4. andrewclaus

    andrewclaus Active Member

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    Next time it bothers you try turning the heat control setting down to minimum and the engine should turn off and stay off. I've noticed that in winter.

    Sometimes the engine needs to run to generate enough heat. The Prius might run fairly cool in city traffic, if the engine is turned off much of the time.
     
    #4 andrewclaus, Dec 29, 2015
  5. bisco

    bisco cookie crumbler

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    it's actually the opposite. the a/c is electric, and the heat needs the engine running. if your on the cusp of a temp cutoff, it might turn on and off, but it shouldn't cycle quickly or often, that would be an anomaly.
     
    #5 bisco, Dec 29, 2015
    valde3 likes this.
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