High whiney noise while driving.

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by simplifying, Sep 8, 2018.

  1. simplifying

    simplifying Junior Member

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    My 2006 Prius just starting making a high pitch noise only while driving. Does not make the noise while not moving. It appears to be having no other symptoms. Thanks in advance for any ideas.
     
    #1 simplifying, Sep 8, 2018
  2. Lucifer

    Lucifer Senior Member

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    Something thin and tinny rubbing a brake rotor?
    Are any of the brakes hotter then the others?
     
    #2 Lucifer, Sep 8, 2018
  3. JC91006

    JC91006 Senior Member

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    Maybe you have a low brake indicator on your pads. It's warning you the brakes are low
     
    #3 JC91006, Sep 8, 2018
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  4. audiodave

    audiodave Active Member

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    Jack it up, spin the wheel by hand and listen. Might just be the low pad metal tab as JC mentioned.

    Posted via the PriusChat mobile app.
     
    #4 audiodave, Sep 8, 2018
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  5. bisco

    bisco cookie crumbler

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    wheel bearing? cv joint? inverter?
     
    #5 bisco, Sep 8, 2018
  6. exstudent

    exstudent Senior Member

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    Water pump and/or belt tensioner bearing? OP could be moving forward under battery power to a point before the gas engine kicks in. OP could be stopped and the gas engine does not turn on.

    Where does the sound seem to be originating? Engine compartment? Front R/L/Both, Rear R/L/Both?
     
    #6 exstudent, Sep 9, 2018
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  7. edthefox5

    edthefox5 Senior Member

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    How many miles on car?

    Put the car in inspection mode and engine will run continuously so you can listen to it.

    Oil full.....belt worn.....red specks all over front of engine reflecting leaking and blown water pump.
     
    #7 edthefox5, Sep 9, 2018
  8. simplifying

    simplifying Junior Member

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    All fluids are fine. I do not have the ability to hoist it up high. I do note a tire shows being low. Last time the car was in (2017) I was told brakes will need to be done in 2018. Thanks for the responses from you all!
     
    #8 simplifying, Sep 9, 2018
  9. ITBland

    ITBland Active Member

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    Page 329 of the 2006 Owner's Manual:
    Brake pad wear limit indicators
    upload_2018-9-9_12-36-16.png
    The brake pad wear limit indicators on
    your disc brakes give a warning noise
    when the brake pads are worn to where
    replacement is required.
    If you hear a squealing or scraping noise
    while driving, have the brake pads
    checked and replaced by your Toyota
    dealer as soon as possible. Expensive rotor
    damage can result if the pads are not
    replaced when necessary.
     
    #9 ITBland, Sep 9, 2018
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  10. RRxing

    RRxing Senior Member

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    Just started making or just noticed making?
    I'll go with the inverter.
     
    #10 RRxing, Sep 9, 2018
  11. Starship16

    Starship16 Senior Member

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    Michelin Premier tires? :ROFLMAO: (y)
     
    #11 Starship16, Sep 9, 2018
  12. JC91006

    JC91006 Senior Member

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    If the sound is a high pitched sound, it's the brake indicator. If the sound is not high pitched, then it's your tires making the noise
     
    #12 JC91006, Sep 9, 2018
  13. Tim Jones

    Tim Jones Senior Member

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    I'm having the high pitched whine... pretty loud at 55+ .... stops if you put it in neutral.... inverter board replace by toyota last summer.....got louder ever since......
     
    #13 Tim Jones, Dec 21, 2018
  14. Hamptgx

    Hamptgx Member

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    Does it vary in pitch and intensity/volume as speed varies? Any pulsation felt in steering column? Do you hear it more pronounced on sweeping curves? If yes to any of these I would suspect wheel bearings.
     
    #14 Hamptgx, Jan 7, 2019
  15. bisco

    bisco cookie crumbler

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    or bad tyres
     
    #15 bisco, Jan 8, 2019
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