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21 Prime click noise at accelerating

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by dig4dirt, Aug 14, 2021.

  1. dig4dirt

    dig4dirt MoonGlow

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    Tried searching. no luck

    Obviously I am not new to "strange noises" from Prius
    I am new to the 21 Prime though.

    I have noticed over the last couple weeks that when I am accelerating I hear a strange click,
    just one time when I hit 14-15-16 mph from a power on.
    I do not believe it happens from every stop. Just a cold start
    Hard to get it with kids in or other things happening, but when I drive solo on sat/wed mornings
    I am by myself and I do not use radio etc.

    I did definitely hear it, as I was ears open this morning.
    and at 14 hitting 15mph it happened.

    It is a single click, sounds like a relay of sorts.
    I do not think it is suspension or mechanical
    windows were up with AC on but low demand (so quiet)

    Any clue what this could be?

    I have only had a chance to hear it about 5 times or so, so far.
     
    #1 dig4dirt, Aug 14, 2021
  2. pghyndman

    pghyndman Active Member

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    Just a thought:

    Maybe it's the Acoustic Vehicle Alert Systems (mandated noisemaker) cutout. The 2021 Prime AVAS cuts off at about (or less than) the speed you indicate and is noticably louder than it was on earlier models... Or?
     
    #2 pghyndman, Aug 14, 2021
    jerrymildred likes this.
  3. pghyndman

    pghyndman Active Member

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    Just a thought:

    Maybe it's the Acoustic Vehicle Alert Systems (mandated noisemaker) cutout. The 2021 Prime AVAS cuts off at about (or less than) the speed you indicate and is noticably louder than it was on earlier models... Or?
     
    #2 pghyndman, Aug 14, 2021
  4. jerrymildred

    jerrymildred Senior Member

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    Exactly what I was thinking.

    BTW, it looks like the flaky forum software gave you a double post. Lots of that going on lately.
     
    #3 jerrymildred, Aug 14, 2021
    pghyndman likes this.
  5. dig4dirt

    dig4dirt MoonGlow

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    The noise maker is not part of the click sound and it (acoustic thing) goes on and on until ~25 mph

    However, it may be part of the electronics for it?

    idk, but this is not threatening me in any way, just has me curious enough if other people notice it.
     
    #4 dig4dirt, Aug 14, 2021
  6. pghyndman

    pghyndman Active Member

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    That's why I said "cutout", as a relay may supply power to the annunciator and that is where the click possibly emanates (not the speaker itself)... N'est pas?
     
    #5 pghyndman, Aug 14, 2021
    jerrymildred likes this.
  7. FuelMiser

    FuelMiser Senior Member

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    If this is your first Gen 4 (2016+), then I'm here to say the "click" upon rolling out the first time is normal ever since I've had my 2016 from new. I'm sure it carried into the Prime.
     
    #6 FuelMiser, Aug 15, 2021
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