Noise when the brake pedal

Discussion in 'Gen 4 Prius Technical Discussion' started by Furina, Feb 10, 2018.

  1. Furina

    Furina New Member

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    Hello,

    When I press my brake pedal I can sometimes hear a weird "crrrr".
    It does it when the engine is cold, even before starting the hybrid system, or at the latest within 2 minutes after starting.
    mp3 file in the .zip attached.
    Normal noise when pressing at 0:08
    Abnormal ? at 0:17.

    Thanks for you help.
    25000 kilometers , from 2016.
     

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  2. bisco

    bisco cookie crumbler

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    it sounds like a bad brake actuator, but not on a '16?
     
  3. Prodigyplace

    Prodigyplace Senior Member

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    Have you had the dealer look at it? It may be a warranty repair.
     
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  4. bisco

    bisco cookie crumbler

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    the first part sounds like the door locks.
     
  5. Furina

    Furina New Member

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    Unfortunately the concession did not find anything. It does not make this noise during all trips. About one in three ...
    In any case it does it only cold and I do not even need to turn on the engine for it to do.

    The noise is at 0:17. Nothing abnormal before. During the recording I pressed several times the pedal is what we hear before with the usual little noise when pressed.
     
  6. Furina

    Furina New Member

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    Another one this morning :
     

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  7. toyolover

    toyolover Member

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    My 2010 Gen3 never made such noise ever since I owned it. I don't believe there are any changes in the brake system for Gen4. Judging from your noise file, it is definitely not normal to my ears. I would ask the dealer to take a look. Even they may not find anything wrong but it should be noted in your service history for future reference.
     
  8. alanclarkeau

    alanclarkeau Senior Member

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    I don't understand what you said "even before starting the hybrid system"? So it makes the noise before you press the <POWER> button?

    Can you play your recording to the service department?
     
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  9. Furina

    Furina New Member

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    Exactly.
    Exactly. It can makes the noise before i press the power button. Or also after. You have the two cases on my recordings. On the last one you can hear the noise before the powering "BIP".
    The latest I got was 2 minutes after I started driving.

    I can make listen to the dealership. Unfortunately it only happens on one out of three trips. I have no idea where it can come from and if it has consequences on my braking.
     
  10. alanclarkeau

    alanclarkeau Senior Member

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  11. Furina

    Furina New Member

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    No. Ive theses "tiktiktik" too but if you hear my records its a big crrrr. Not the same noise
     
  12. alanclarkeau

    alanclarkeau Senior Member

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    I listened to mine today - it started as I approached the car before unlocking - I reckon about 6 or 8 different sounds, almost like I'd imagine an electric flying saucer to make getting ready for take-off - but no "CRRRR", sorry.
     
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