1. Attachments are working again! Check out this thread for more details and to report any other bugs.

ABS Actuator Noise Normal?!?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Toddwilks, Dec 2, 2019.

  1. Toddwilks

    Toddwilks Active Member

    Joined:
    Aug 20, 2014
    555
    176
    0
    Location:
    Whitehouse Station, NJ
    Vehicle:
    2014 Prius
    Model:
    IV
    I had the dealer do an ABS actuator replacement with a new part a few months ago. Now every time I drive the car and turn it off, the car basically screams. It’s a lot louder than it was before and any other gen II I’ve checked. Attached is the clip of turning the car off. Does anyone else’s do this?





    iPhone ?
     
  2. oldtechaa

    oldtechaa Active Member

    Joined:
    Dec 28, 2018
    336
    221
    0
    Location:
    NZ
    Vehicle:
    2013 Prius Alpha
    Model:
    N/A
    Doesn't sound like the brake actuator to me. Sounds like the CHRS pump, pumping the coolant into or out of the coolant thermos.
     
    davecook89t likes this.
  3. Dxta

    Dxta Senior Member

    Joined:
    Nov 7, 2016
    1,932
    766
    0
    Location:
    Lagos
    Vehicle:
    2008 Prius
    Model:
    II
    Does this come up even with the car off, and parked? If it does, then probably they didn't bleed the system properly.

    How is the braking feel when you press the brake pedal? Does it feel kind of hard?
     
  4. Toddwilks

    Toddwilks Active Member

    Joined:
    Aug 20, 2014
    555
    176
    0
    Location:
    Whitehouse Station, NJ
    Vehicle:
    2014 Prius
    Model:
    IV
    Is it going bad? Or is this just the sound it makes?


    iPhone ?

    Brakes feel fine. It’s only when I immediately turn the car off like in the video then it stops


    iPhone ?
     
    #4 Toddwilks, Dec 3, 2019
    Last edited by a moderator: Dec 6, 2019
  5. oldtechaa

    oldtechaa Active Member

    Joined:
    Dec 28, 2018
    336
    221
    0
    Location:
    NZ
    Vehicle:
    2013 Prius Alpha
    Model:
    N/A
    If it is the CHRS pump, then it definitely has a problem. It could just need air bled, although I doubt that. If you say it only happens on startup and shutdown, that makes that more likely, because those are the only times the coolant pump runs. If you press the brake pedal over and over again while the car is running, you should hear a little rattlesnake type sound behind the dash. That's the brake actuator. If you heard the screaming regularly while driving, then I'd more likely think it's the brakes, but the good thing is the coolant pump should be much cheaper. If you have a good hybrid or Toyota shop nearby, ask for their opinion.
     
    Toddwilks likes this.
  6. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,571
    48,862
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    how many miles on her?
     
  7. Toddwilks

    Toddwilks Active Member

    Joined:
    Aug 20, 2014
    555
    176
    0
    Location:
    Whitehouse Station, NJ
    Vehicle:
    2014 Prius
    Model:
    IV
    115k.


    iPhone ?
     
    bisco likes this.
  8. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,571
    48,862
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    wow, that is low for brakes and coolant pump