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Engine coolant cap

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by PriusKyle, Mar 26, 2022.

  1. PriusKyle

    PriusKyle Junior Member

    Joined:
    Mar 12, 2022
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    Location:
    Virginia
    Vehicle:
    2011 Prius
    Model:
    Three
    Hey all,

    As I was removing my engine coolant cap, I noticed it had something on the body of reservoir different than the inverters. There’s a nipple coming off of the body of reservoir just below the neck where the cap is and that nipple is capped of by what looks like and size of a tire valve cover.

    Never noticed it but can someone confirm they have it too and my 2011 Prius is not an aberration? Why is that there? Thanks!
     
    #1 PriusKyle, Mar 26, 2022
  2. tankyuong

    tankyuong Senior Member

    Joined:
    Nov 9, 2012
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    Location:
    Central MO
    Vehicle:
    2012 Prius c
    Model:
    II
    Got it, I think it's the overflow
     
    #2 tankyuong, Mar 27, 2022
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