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Noise at Shutoff

Discussion in 'Gen 2 Prius Main Forum' started by qmanqman, Dec 31, 2023.

  1. qmanqman

    qmanqman Active Member

    Joined:
    Mar 29, 2020
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    Location:
    CO
    Vehicle:
    2007 Prius
    Model:
    One
    What is it that starts running when I shut off and get our of my car? It sounds like a pump starts running.
     
    #1 qmanqman, Dec 31, 2023
  2. ChapmanF

    ChapmanF Senior Member

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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    It's a pump running. It moves the hot engine coolant into a thermos so it can be used when you start the car to shorten warmup.
     
    #2 ChapmanF, Dec 31, 2023
  3. qmanqman

    qmanqman Active Member

    Joined:
    Mar 29, 2020
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    Location:
    CO
    Vehicle:
    2007 Prius
    Model:
    One
    That is incredible. I just read that the thermos bottle stores 3 liters of coolant at boiling temps for up to 3 days. Wow!
     
    #3 qmanqman, Jan 1, 2024
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