What’s running long after car is shut off?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Cindy DeGraw, May 6, 2021.

  1. Cindy DeGraw

    Cindy DeGraw New Member

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    It is a humming noise and seems to be coming from the general area of the hybrid plug midway under the car. Occurs randomly long after the car is turned off. Any ideas?
     
    #1 Cindy DeGraw, May 6, 2021
  2. sLick415

    sLick415 Member

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    That's normal. Your car's checking for fuel leaks.
     
    #2 sLick415, May 7, 2021
  3. fuzzy1

    fuzzy1 Senior Member

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    Is it 5 hours after you turn off the vehicle? Page 22 of the Owner's Manual:

    upload_2021-5-6_22-58-15.png
     
    #3 fuzzy1, May 7, 2021
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  4. Dael

    Dael Member

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    Page 8 on 2020 manual
     
    #4 Dael, Feb 23, 2025 at 4:27 PM
  5. MAX2

    MAX2 Active Member

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    Is the 2020 manual definitely written about Gen3?
    Look carefully at the section and topic.
     
    #5 MAX2, Feb 24, 2025 at 4:40 AM
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  6. ChapmanF

    ChapmanF Senior Member

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    I wonder if Dael just wanted to note that the same self test still happens in 2020 models and is mentioned in that owners' manual too.
     
    #6 ChapmanF, Feb 24, 2025 at 11:42 AM
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  7. Mendel Leisk

    Mendel Leisk Senior Member

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    When we get new cars I can never resist crawling under for a look. With the Prius the evap system activated while I was under, scared the cr@p out of me. :eek:
     
    #7 Mendel Leisk, Feb 24, 2025 at 11:57 AM
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