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Clicking sound when car is running

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by sjr14221, Sep 28, 2017.

  1. sjr14221

    sjr14221 Member

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    Four Touring
    Hello,

    Quick background:
    2016 prius 4 touring with 27000 miles on it. Someone backed into the front end about 6000 miles ago. Everything in front replaced with genuine Toyota parts. Mileage has been good (first summer driving was after accident so no baseline to compare).

    Problem:
    Today a ticking noise from under the hood on the passenger side started as i was driving home. Continuous as long as car is running, even when parked and gasoline engine off.
    If i turn the car off, the noise dies down as if it were a loose fan.
    When i turn the car back on the noise ramps up high then settles to a softer but continuous ticking.
    When i open the hood, the noise is softer like it's under something. Definitely louder from inside the vehicle.

    Anything i should look for or ask dealer and/or collision shop when i take it in? Does this sound like it could be dangerous to drive? Repair shops are about 20 miles away.

    Thanks for any help anyone can provide.
     
    RCO likes this.
  2. bisco

    bisco cookie crumbler

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    is the sound present with the engine on or off?
     
  3. RCO

    RCO Senior Member

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    He said gas engine off, so I reckon it has to be an electromechanical noise.
     
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  4. sjr14221

    sjr14221 Member

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    The sound is present when the vehicle is on - both with and without the gasoline engine running.
     
  5. sjr14221

    sjr14221 Member

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    Thanks. The sound is present when the vehicle is on - both with and without the gasoline engine running.
     
  6. kithmo

    kithmo Couch Potato

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    Maybe something is caught in the heater fan.
     
  7. DonDNH

    DonDNH Senior Member

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    Does the ticking stop when you turn off the heat/ac? Does the fan speed affect the ticking?
     
  8. DonDNH

    DonDNH Senior Member

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    Does the ticking stop when you turn off the heat/ac? Does the fan speed affect the ticking?
     
  9. sjr14221

    sjr14221 Member

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    Thanks. I did not try turning off the climate control. The fan is set low (2 bars on display). The sound continues for a couple seconds after I turn the car off.
     
  10. bisco

    bisco cookie crumbler

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    try turning the fan off.
     
  11. sjr14221

    sjr14221 Member

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    I will have to wait until i get home from work to try it. Used alternate transportation today.
     
  12. sjr14221

    sjr14221 Member

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    Hey folks, you nailed it! Turned the ac fan off - noise stopped. Diagnosis - leaves in the fan. Still had to let them fix it, but really glad it wasn't a mechanical problem.

    I like to think that i will only have to replace wear and tear items like tires and brakes over the life of the vehicle (at least 200k, for me) and I've been extra worried since the accident.
     
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  13. sjr14221

    sjr14221 Member

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    Update: it was a mouse!
     
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  14. RCO

    RCO Senior Member

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    Look out Tom, Jerry's comin' for ya!!

    That's all Folks!

    Da dada da da da dah.....
     
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  15. sjr14221

    sjr14221 Member

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  16. RCO

    RCO Senior Member

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    Sorry, I can't remember if Tom & Jerry cartoon was on Looney Tunes or Merry Melodies.

    Either produced or directed by the legendary Fred Quimby FWIW.
     
  17. sjr14221

    sjr14221 Member

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    Apparently, the emoticons don't work here?
     
  18. RCO

    RCO Senior Member

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    Only use the ones offered at the top of your reply denied by a smiley. They're the only one that work on the forum for me as my Android ones don't.
     
  19. sjr14221

    sjr14221 Member

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