LOUD low screech on shutting down

Discussion in 'Gen 3 Prius Main Forum' started by framistat, Mar 28, 2025.

  1. framistat

    framistat Junior Member

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    Prius was fine. Long 9 hour drive to another city, car sits for 11 days, then long drive back with another person driving. Car sits for 5 days.

    Gas mileage on the trip was poor, but then some of the speeds were high. Only 51K miles on the odo.

    Today I take it out to run an errand. Close to home I notice the hybrid battery is only half full - usually it's one bar from full. Back into the driveway as usual and shut down, and there is a LOUD, low-pitched, short screech from the front.

    I fear for my wallet.
     
  2. bisco

    bisco cookie crumbler

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    doesn't sound familiar. check all the fluid levels and drive it some more to see if it is repeatable
     
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  3. Mendel Leisk

    Mendel Leisk Senior Member

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    Maybe some clues in your signature, one of the mods?

    Don’t see the hybrid battery state of charge being significant.
     
  4. framistat

    framistat Junior Member

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    It will be a day or two before driving again, but I can report that just before the trip a trusted local garage replaced the front brakes and rotors. It's kept outside, so...
     
  5. Mendel Leisk

    Mendel Leisk Senior Member

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    Maybe the “rodent repeller”?
     
  6. framistat

    framistat Junior Member

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    Lol. No. That's just a tiny black plastic box that makes ultrasonic sounds and flashes LEDs. Not capable of such a loud noise.

    I will try to get out today to check fluids at least. Still recovering from heart valve surgery, which is what the trip was for.
     
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  7. Mendel Leisk

    Mendel Leisk Senior Member

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    Oy vey, take care.
     
  8. framistat

    framistat Junior Member

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    Maybe it was a groan rather than a screech. It didn't sound like brake noise to me, more from the engine compartment. I will report back after checking fluids.
     
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  9. Mendel Leisk

    Mendel Leisk Senior Member

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    Maybe do a test drive sooner, see if the sound happens again, or other clues arise.

    brakes could be it. You back into your driveway (or I’m misreading)? Driveway slopes, and if so which way?
     
    #9 Mendel Leisk, Mar 29, 2025
    Last edited: Mar 29, 2025