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Humming/Buzzing when brakes are applied

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by KMAN4190, Apr 20, 2013.

  1. KMAN4190

    KMAN4190 Junior Member

    Joined:
    Dec 11, 2012
    57
    9
    0
    Vehicle:
    2012 Prius c
    Model:
    Two
    Hello
    My car is approaching 13000 miles and I noticed that while cruising at highway speeds and I let go of the accelerator I hear a humming/ buzzing noise. I know that braking and coasting charge the hybrid battery and assume that's what I am hearing but I never noticed it before and if I did it wasn't as loud. Does anyone else hear that. Do I need to put the radio up ? Lol. Thanks in advance.
     
    #1 KMAN4190, Apr 20, 2013
  2. clgutierrez

    clgutierrez Junior Member

    Joined:
    Jun 28, 2012
    51
    17
    0
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Likely the regenerative hum. Check pressing the brakes just a little bit, it should hum louder (of course when no one behind your car)


    Sent ?
     
    #2 clgutierrez, Apr 20, 2013
  3. winnertakesteve

    winnertakesteve Member

    Joined:
    Aug 21, 2012
    121
    35
    6
    Vehicle:
    2012 Prius c
    I just started noticing something similar. It's less of a hum and more of a high pitched noise, in my case, though. It definitely happens whenever I let up on the accelerator. Not braking, and not even taking my foot fully off the pedal and sending the power gauge into the blue, just applying slightly less pressure bringing the green power bar to just above the Eco line.

    And while it may or may not be related, I also have started noticing a repetitive squealing noise (as if from spinning wheels) when driving a lower speeds.
     
    #3 winnertakesteve, May 8, 2013
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