Rear suspension squeaking

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by ShihFa, Aug 16, 2025 at 3:57 AM.

  1. ShihFa

    ShihFa Junior Member

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    Hello All,

    I have tried to read all posts regarding squeaking possibly from the rear non-driver-side suspension, and I seem to be leaving with more questions than answers. From what I read, when people ask about squeaking from the suspension, people seem to want to know whether the squeaking is happening at high speed or low speed, braking or accelerating, and is it when going over bumps and such.

    I will try my best to answer these question.
    1. High speed or low speed?
    A. It feels like both. As long as my car is moving, it is squeaking

    2. Braking or accelerating?
    A. The sound seems to happen when the car is going over the road. No discernible difference when accelerating or braking.

    3. When it is going over bumps or not?
    A. Basically, when the car is driving along the road, it squeaks, and it may be more pronounced when I roll over a bump or groove.

    If there is any other questions that I should ask in this diagnosis, please let me know

    Thank you and regards,

    Shih Fa Kao
     
    #1 ShihFa, Aug 16, 2025 at 3:57 AM
  2. Tombukt2

    Tombukt2 Senior Member

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    So then by your description you should be able to take a long 2x6 piece of wood like a 16 footer put it on shoulder try n lift up n down if you can really rock the car you may be able to duplicate the squeak . Usually it's trailing arm bushings stuff like that in the back of the car stuff that moves when the car undulates a little bit . The brakes can squeak but usuually on release.
     
    #2 Tombukt2, Aug 16, 2025 at 11:12 AM
  3. Mendel Leisk

    Mendel Leisk MMX GEN III

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    Has the car been in any accidents?
     
    #3 Mendel Leisk, Aug 16, 2025 at 11:22 AM
  4. ShihFa

    ShihFa Junior Member

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    Nothing major besides a few bumps here and there.
     
    #4 ShihFa, Aug 16, 2025 at 12:14 PM
    Mendel Leisk likes this.
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