While parked, humming at rear of 2017 Prius Two

Discussion in 'Gen 4 Prius Main Forum' started by Jtimc7, Mar 2, 2019.

  1. Jtimc7

    Jtimc7 Junior Member

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    Any thoughts on what the electrical humming sound I’m hearing underneath, in the rear of my 2017 Prius Two might be?
    The times I’ve noticed it have been several hours after the vehicle has been driven. It lasts for a few minutes and then stops.
     
  2. priusman09

    priusman09 I used to be a TDI

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    It may be an evaporative pump for the fuel system. I believe it is a normal sound.
     
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  3. bisco

    bisco cookie crumbler

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    Correct
     
  4. fuzzy1

    fuzzy1 Senior Member

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    Is it this, from page 8 of your 2017 Owners Manual?

    upload_2019-3-2_14-19-56.png
     
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