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ABS Actuator vs. Brake Booster?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by karmakid64, Jun 24, 2022.

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  1. karmakid64

    karmakid64 Junior Member

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    Hello folks
    I have a 2005 Gen2 Prius,

    I just replaced the ABS Actuator with a used version of the updated part #44510-47051and its working great, however,
    I am hearing on Facebook Prius groups that the Brake Booster also has to be replaced and for a few years now I thought I understood that both the Actuator AND Booster are integrated into one part and are not separate parts. I've searched forums but couldn't find any mention of this.
    Can someone please clarify this for me?

    Thanks!
     
    #1 karmakid64, Jun 24, 2022
  2. JC91006

    JC91006 Senior Member

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    The gen 2 cars, actuator and accumulator are one unit. Gen 3 cars, they are separate units
     
    #2 JC91006, Jun 24, 2022
    SFO and karmakid64 like this.
  3. karmakid64

    karmakid64 Junior Member

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    Ok so what I called a Booster is actually called a Actuator?
    Thank you and Sorry, i am not a mechanic
     
    #3 karmakid64, Jun 24, 2022
  4. JC91006

    JC91006 Senior Member

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    I guess the name is brake booster for those parts. I'm not sure how they name it. These parts fail over time and both Gen 2 and Gen 3 cars had extended warranty coverage for these parts. But both free campaigns are over.
     
    #4 JC91006, Jun 24, 2022
  5. ChapmanF

    ChapmanF Senior Member

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    In a Gen 2, the single box that you replaced is both the actuator and the booster pump. To keep things extra confusing, a "booster pump" is not the same thing as a "booster", and the Gen 2 is the only Prius generation that does not have a booster (even though it does have a booster pump).

    So yes, the naming makes people go crosseyed, and different generations have mixed 'n' matched the parts differently; you can look at this old post (but not the old prices in it) for the low-down.
     
    #5 ChapmanF, Jun 24, 2022
  6. PriusCamper

    PriusCamper Senior Member

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    The important part is you don't have to do additional work!
     
    #6 PriusCamper, Jun 24, 2022
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