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brake booster

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by PopCorkOff, Dec 3, 2023.

  1. PopCorkOff

    PopCorkOff Junior Member

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    Can someone please tell me how to post my problem to the whole forum ?
    My 2013 Pruis brake booster has a moan or groan or whine at a pitch of approximately E above middle C on the piano.
    Do I have to replace the whole brake cylinder business -- the motor & pump, or whatever it is that makes that two-second noise every 17 seconds.
     
    #1 PopCorkOff, Dec 3, 2023
    bisco likes this.
  2. PriusCamper

    PriusCamper Senior Member

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    Pretty cool description of the noise. Wish other people were that detailed. And it's not so much the noise, but how often you hear the noise and every 17 second means it's time. Of course on Gen3, Toyota separated the booster into two different systems. So you have to decide which one to replace. It's a bit challenging of a job, and a used replacement is way cheaper than brand new.
     
    #2 PriusCamper, Dec 4, 2023
  3. bisco

    bisco cookie crumbler

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    You’ve posted in the right place. If you don’t have any trouble lights, and the brakes are fine, wait until you get lights.
    Then you’ll be directed by the codes to diagnose and repair the correct problem
     
    #3 bisco, Dec 4, 2023
  4. rjparker

    rjparker Tu Humilde Sirviente

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    If it is doing this constantly it is worn out. It takes several minutes of running to throw a code. So it could last a few more months or longer if you are lucky.

    Be careful with used parts as the housing numbers are not the part number. The pn changes based on factory wheel size and year. Since this is an important safety device, most spend a few more hundred and buy new. Best prices are usually the online Toyota dealers.
     
    #4 rjparker, Dec 4, 2023
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