Center Vent Not Holding Position

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by mig1980, Aug 5, 2025 at 11:54 PM.

  1. mig1980

    mig1980 Junior Member

    Joined:
    Jul 1, 2011
    68
    1
    0
    Location:
    El Dorado Hills, CA
    Vehicle:
    2014 Prius
    Model:
    N/A
    Good day everyone. Today noticed that the center dash vent (on the driver's side) is no longer holding position. If I adjusted it to the middle, it just flaps up. I can get it to stay (sort of) but with road vibrations, it again flaps up. Images below.

    Is there a fix for this?

    20250805_191023.jpg

    20250805_190545.jpg
     
  2. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    12,387
    2,195
    0
    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    It's called goop in a tube strategically placed a few dots will hold vent wer you aim and put dots of the stuff not heavy you shouldn't see it wen done . Get it right once it stuck you have to break seal and roll up to get it to glop around again . Or junkyard .
     
  3. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    26,771
    17,549
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    When my gen 1 was doing that I waited till I had the center dash out for another reason, and I cut a couple slivers off a thin rubber sheet and stuck them in the grooves where the vanes pivoted. It worked nicely.
     
  4. mig1980

    mig1980 Junior Member

    Joined:
    Jul 1, 2011
    68
    1
    0
    Location:
    El Dorado Hills, CA
    Vehicle:
    2014 Prius
    Model:
    N/A
    Given the two responses, I take it there is no way to easily repair or replace that piece? Unsure what would cause it to do what it is doing.
     
  5. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    26,771
    17,549
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    A change over the years in the coefficient of friction between the moving part(s) and the nonmoving one(s).

    I found that just adding a couple strips of thin rubber behind a vane's pivot points made it nice and secure again—easy to move on purpose, and not moving by itself.

    I'm not sure what kind of goop in a tube Tom used. There are lots of kinds of goop. I assume it wasn't the hand cleaner that's actually called GOOP. I wouldn't really think of hand cleaner for that.
     
  6. mig1980

    mig1980 Junior Member

    Joined:
    Jul 1, 2011
    68
    1
    0
    Location:
    El Dorado Hills, CA
    Vehicle:
    2014 Prius
    Model:
    N/A
    Interesting about the strips of thin rubber. Do you have any additional information on this (e.g., what and where to purchase, where specifically to install)?
     
  7. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    26,771
    17,549
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    I have a big sheet of, like, 1/16" thick rubber, maybe EPDM, that I bought somewhere years ago, so I cut a couple slivers out of that.

    You've got a different car with different vents than my old gen 1, so I probably can't help much with where specifically to install. Once you have the vent assembly out and you're looking at it, you should see where the piece you'd like to hold position better has pegs where it pivots in something, and that's what you'd like to make just a bit tighter.
     
  8. ASRDogman

    ASRDogman Senior Member

    Joined:
    May 29, 2018
    7,303
    3,820
    0
    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    Two
    You could try a bicycle tube, from a thin tire. Or perhaps a rubber glove?
    Pull the vent out, put a small piece of the glove over the hole and put the vent in.
    The little tab will be tight.

     
  9. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    12,387
    2,195
    0
    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    Goop it's made for plumbing and shoes used to be called shoe goop grey tube red letters and spelling above repairs many things excess can roll up and not be seen . My Gen 3 couldn't make it long enuff for vents to fail unfortunately 2 or em . Amazing Goop States on label very popular stuff many years
     
  10. mig1980

    mig1980 Junior Member

    Joined:
    Jul 1, 2011
    68
    1
    0
    Location:
    El Dorado Hills, CA
    Vehicle:
    2014 Prius
    Model:
    N/A
    Thank you for the suggestions. Is there instructions that I can follow on how to pull the vent out? I havent been able to locate anything in my search.
     
  11. mig1980

    mig1980 Junior Member

    Joined:
    Jul 1, 2011
    68
    1
    0
    Location:
    El Dorado Hills, CA
    Vehicle:
    2014 Prius
    Model:
    N/A
    Is this what you are referring to?

    https://a.co/d/2hAQaJd

    If yes, this is an adhesive. I dont want to glue it. I would image i am looking at add friction to it to holdnin position.
     
  12. ASRDogman

    ASRDogman Senior Member

    Joined:
    May 29, 2018
    7,303
    3,820
    0
    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    Two
    You can do a duckduckgo search for it. I do remember seeing one not too long ago,
    but don't know where, sorry.
    You could use a thin piece of cardboard and slide a piece between the vent and the
    wall of the assembly.

     
  13. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    12,387
    2,195
    0
    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    Adhesive yes but rolls up w fingers it's also flexible 8 use grey tube plomero. No adhesive of any type you back to tape strips or cardboard matchbook etc . Goop works great on trim no rattles etc breaks free wen ready rolls up thrown away try it on your hand you see
     
  14. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    12,387
    2,195
    0
    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    WhOle panel comes off of not mistaken. Notecangle of vent sim before disassembly so you can aim before a dab of goop just a tee niny bit from very tip strategically placed Wella