Single Click Noise

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by nate_harrison_1995, Mar 14, 2025.

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  1. nate_harrison_1995

    nate_harrison_1995 New Member

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    I have a 2004 Toyota Prius. For the last year now, I hear a SINGLE click when I accelerate after breaking (almost to a full stop- between 0 and ~30 mph). I hear that sound (slightly less loud) when braking at medium speed, but only sometimes. It sounds like it is coming from the drivers side/transmission. It also sounds like metal on metal.

    I have checked the calipers/break pads and replaced all but one motor mount. The noise is still there. I recently got 4 new tires and replaced the passenger side wheel hub assembly (I am about to do the same to the driver side).

    Thoughts? Thanks in advance.
     
    #1 nate_harrison_1995, Mar 14, 2025
  2. JC91006

    JC91006 Senior Member

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    How are the end links on your suspension?
     
    #2 JC91006, Mar 15, 2025
  3. nate_harrison_1995

    nate_harrison_1995 New Member

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    They seem to be in good shape. Could a worn CV joint present like this?
     
    #3 nate_harrison_1995, Mar 15, 2025
  4. ChapmanF

    ChapmanF Senior Member

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    Are the fitting-kit pieces (the spring clips that sit in the caliper brackets and take the pad ears) installed the right way? They're not all four identical, if I remember right. On each side of the car should be one of each kind, with the springier one pushing the pad in the direction of forward car travel.
     
    #4 ChapmanF, Mar 15, 2025
  5. mr_guy_mann

    mr_guy_mann Senior Member

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    Possibly. A "bad" CV joint often has rhythmic popping sounds - only on turns under load.

    What can also happen is minor wear between the splines on the axle and the splines in the hub. A "hard" decel to-from accel shift can cause the axle to move slightly in the hub with a single metallic pop. If that's the cause then I usually pack the splines with heavy grease and retorque the axle nut.

    Posted via the PriusChat mobile app.
     
    #5 mr_guy_mann, Mar 16, 2025
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