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The dreaded braking/acceleration click

Discussion in 'Gen 4 Prius Main Forum' started by acarapella, Nov 11, 2022.

  1. acarapella

    acarapella Junior Member

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    Hello,

    I've read quite a bit about a clicking (repeated) just before a complete stop ligth braking and at light acceleration from a dead stop in 2016+. Seems like in all the cases I read, it was the driver's/left side CV axel. I will be able to isolate where its coming from with special microphones I have, but it might not be clear weather or not its the axel or the Power Split Device (Transmission) that it's inserted into!

    Has ANYONE found this clicking to be the transmission and not the axel? I need some more info to see how to proceed

    Thanks

    Drew
     
  2. Jburner

    Jburner Member

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    Found lots of threads discussing this. Seems like swapping out CV axle doesn’t fix it and the solution is to put up the window and turn up the music because it doesn’t affect anything except a noise at low speeds. That’s paraphrasing Toyota removing the TSB on it.
     
    #2 Jburner, Nov 12, 2022
    Last edited: Nov 12, 2022
    Pulse07 likes this.
  3. acarapella

    acarapella Junior Member

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  4. Michael Wood

    Michael Wood Active Member

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    That pretty much the truth. Gen 3's do it too. If you reach under the car, you can reproduce the sound by turning the axle - there's about 1/16" of play. One theory is that it has to do with the physics of axle movement vs regenerative braking. Doesn't appear to cause other problems. You can read up on it by searching "clicking noise".

    Burner is right, turn up the radio. The good news is, it's not the transmission.
     
  5. acarapella

    acarapella Junior Member

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    Lol yea that’s good news. A new Axel
    Will
    Help?
     
  6. Michael Wood

    Michael Wood Active Member

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    It's a weird issue. My car only does it when I'm slowing to a stop and turning right at the same time. And only on one particular exit ramp where the conditions are just right. Replacing an axle might provide some relief, but the problem has reemerged for some who did that, so it's not a guaranteed fix. After all the research I did, I decided to do nothing.
     
  7. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    I'm working on the same issue myself in a 2011. But I do believe it's the transmission. Final differential I believe it is. I will be putting new drive shafts in. The rest of the suspension is new because I didn't think it was the transmission. Everything else is replaced with no change so it has to be. I kinda think it's this pin that has some play in it that it shouldn't have. I'm currently waiting on a ride to get yard transmission and will see if there is play in that one. IMG_20221114_100941.jpeg

    Posted via the PriusChat mobile app.
     
  8. Michael Wood

    Michael Wood Active Member

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    That's interesting. What are the specifics of your car's symptoms. Has there been any change in the clicking noise since you first noticed it?

    Check out this video at the 1:06 mark



    And this one at 1:15

     
  9. Raphael Muscarelle

    Raphael Muscarelle Active Member

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  10. Michael Wood

    Michael Wood Active Member

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    No....that's a completely different issue. It sounds like this......

     
  11. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Yeah that's different.
    Posted via the PriusChat mobile app.
     
  12. Michael Wood

    Michael Wood Active Member

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    The car in the video I posted last is an extreme example. For most people it's barely audible...you can only hear it with the radio off, and it's frequently not fixed by axle or suspension part replacements. And it usually only happens at slow speeds when stopping while turning left or right.
     
  13. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Funny I changed my transmission and drive shaves. Now I have this noise.

    Posted via the PriusChat mobile app.
     
  14. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Well that's not good because now I have that problem with new axels inner is shaped differently tho. I was thinking it is hitting transmission housing. I'm gonna see if that's the case tomorrow.
    Posted via the PriusChat mobile app.
     
  15. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    You ever try to put spacer on lugnuts. Maybe the tire isn't being clamped on tight enough.
    I just had that noise cus I forgot to tighten the lugnuts.

    Posted via the PriusChat mobile app.