ABS Actuator and Accumulator Replacement

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by myway_1, Jun 16, 2022.

  1. myway_1

    myway_1 New Member

    Joined:
    Feb 6, 2022
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    Location:
    USA
    Vehicle:
    2015 Prius
    Model:
    Four
    Hello folks,

    My 2015 Prius with 173,000 miles has been making a whirring/buzzing noise for two seconds repeatedly every 12 seconds. From reading this forum it seems to be the accumulator pump running. There are no dashboard warning lights. Also when I depress the brake pedal I hear a rapid popping/clicking noise.

    I took it to the dealer who said I need an "ABS actuator and pump". Quote was $3,186.00.

    I am in the process of getting quotes from independent general mechanics. (There is no hybrid specialist within 100 miles).

    I want to be sure that everybody is pricing the same parts.

    So here are my questions:

    1. When the dealer says ABS actuator do they mean the entire assembly (Master cylinder, booster, actuator and ECU) or can just the actuator itself be switched out.

    2. When the dealer says pump do they mean the entire accumulator assembly or can just the pump itself be switched out.

    3. Are the actuator and the accumulator always replaced together in this situation?

    I would ask the service advisor but I don't think he would know.

    Thanks in advance for your responses.
     
    #1 myway_1, Jun 16, 2022
  2. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    16,638
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    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    Trade it in before it fails. A 2015 will get you crazy money, then go buy yourself a new Hybrid
     
    #2 JC91006, Jun 17, 2022
  3. Mr. F

    Mr. F Active Member

    Joined:
    Sep 21, 2020
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    Location:
    Washington
    Vehicle:
    2010 Prius
    Model:
    IV
    In each case, the dealer is referring to the entire assembly and not just the actuator or just the pump. Both assemblies arrive filled with brake fluid and bled from the factory, and Toyota does not want anybody disassembling them trying to swap out individual parts. And with good reason too, since there is a high chance of a contaminant (air, dirt) getting in during the back-alley operation, and subsequently wreaking havoc in any of the multiple valves within the actuator.

    A dealership will usually swap out both at the same time since it may be difficult to pinpoint which assembly has the internal leak (and also because it's more money for them).
     
    #3 Mr. F, Jun 17, 2022
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