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Weird sounds from braking

Discussion in 'Prius c Technical Discussion' started by maverickf, Apr 22, 2012.

  1. maverickf

    maverickf New Member

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    2012 Prius c
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    Three
    I heard some weird sounds, it sounded like some metal dropping on concrete, when I stepped on the brake while making turns. I know in the manual it says "Sounds may be heard due to regenerative braking when the brake pedal is depressed." in P.28, but was the sound normal?

    Now, any wired sound from the car makes me nervous...... I hope it just happened today...... :(
     
    #1 maverickf, Apr 22, 2012
  2. krneidigh

    krneidigh Junior Member

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    I'm going to say take it in. The regen brakes will just have an EM whine. It could be anything from a bolt came out of your caliper to a bad CV joint. Does you abs fire? Does it pull to one side?
     
    #2 krneidigh, Apr 22, 2012
  3. strongbad

    strongbad Member

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    The ABS will kick in when one or more wheels is turning significantly faster than another while braking. That would be the outside wheels when braking and turning vs the inside wheels. The ABS computer can figure out turns and not kick in, but if you hit a bump while turning and braking it confuses the computer and kicks the anti-lock in.
     
    #3 strongbad, Apr 22, 2012
  4. maverickf

    maverickf New Member

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    2012 Prius c
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    I didn't hear that noise yesterday, but again this morning...
    I read another member had a problem and he said it was a heat shield hitting a metal transmission line, maybe I better bring my car back to the dealer and check. Problem is I need to take a day off to do so unless bringing it on Saturday.
     
    #4 maverickf, Apr 23, 2012
  5. magtataho1

    magtataho1 New Member

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    Hi fellow C owners,
    All 2012 Toyota Prius 1 2 3 are all equipped with Vehicle Approach Notice system which means it mimic the sound pressure of a conventional engine especially during braking.
    It prevents a danger for a visually impaired somebody or pedestrians.


    Hope it helps.

    magtataho1
     
    #5 magtataho1, Apr 23, 2012
  6. SquallLHeart

    SquallLHeart The Techie Guy

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    huh...?

    i'm pretty sure the sounds described above have nothing to do with the VPNS..
     
    #6 SquallLHeart, Apr 23, 2012
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