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2012 Prius fan runs automatically when engine is off

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Brandi Bobrowski, Aug 26, 2017.

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  1. Brandi Bobrowski

    Brandi Bobrowski New Member

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    Location:
    Grover Beach, CA
    Vehicle:
    2012 Prius
    Model:
    N/A
    A fan begins running about 5 minutes after the car is turned off, happens only in the daytime and doesn't seem to matter the temperature or cloud cover. I've brought it to two dealerships to have it diagnosed, but they can't recreate the issue as they do diagnosis under a cover and the car only seems to do it if daylight is involved (meaning it's running for 8+ hours while I'm at work). Someone says the car does it to keep itself cool, but it started after an oil change and I don't see anywhere that says this is a normal feature. It shuts off for under a minute and starts again. Any ideas?
     
    #1 Brandi Bobrowski, Aug 26, 2017
  2. bisco

    bisco cookie crumbler

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    Vehicle:
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    Plug-in Base
    i think it's some kind of pollution control check, they all do it, no worries. (unfortunately, dealers are the least likely to understand hybrids) if they can't plug their scanner in and get a code, they're pretty much at a loss.
     
    #2 bisco, Aug 27, 2017
  3. Mendel Leisk

    Mendel Leisk Senior Member

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    Vehicle:
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    Would it be the solar roof??
     
    #3 Mendel Leisk, Aug 27, 2017
    Maarten28 likes this.
  4. bisco

    bisco cookie crumbler

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    you don't get one with the 'N/A' package.:cool:
     
    #4 bisco, Aug 27, 2017
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  5. Maarten28

    Maarten28 Active Member

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    Vehicle:
    2011 Prius
    Model:
    Three
    Sure sounds like the interiour fan with the solar roof. When it runs, go inside the car and check if there is air coming out of the vents.
    But more importantly: where does the sound come from? Does it come from the engine bay? From the exhaust? From the tyres (yes I'm being pedantic but at this point it's anyone's guess).
     
    #5 Maarten28, Aug 28, 2017
  6. b100

    b100 Member

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    I think he has a solar roof and don't know it...
     
    #6 b100, Aug 28, 2017
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