Bleeding when pushing the front brake's pistons

Discussion in 'Gen 2 Prius Main Forum' started by Prius2006GuitarGuy, Apr 30, 2025 at 9:37 PM.

  1. Prius2006GuitarGuy

    Prius2006GuitarGuy Junior Member

    Joined:
    Sep 1, 2024
    62
    12
    2
    Location:
    Sweden
    Vehicle:
    2006 Prius
    Model:
    N/A
    Hey!

    I am planning on doing my front brakes: changing the pads and rotors.
    Watched around 25 videos including troubleshooting and when things go wrong just to know what I can expect.


    One video gave me something to think about (
    around 22:47) ,the guy says when pushing the piston back (using a piston brake tool) I should also open the valve to bleed that brake a bit as there might be debris there that would get pushed back up into the brake line if I do not open the valve when pushing the piston back.

    He was doing it on a non prius car so I'm wondering if that's standard on all cars, including the prius?

    Thanks!
     
  2. BiomedO1

    BiomedO1 Senior Member

    Joined:
    Mar 27, 2021
    2,571
    1,381
    0
    Location:
    SacTown, Ca
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    If this is your first time doing brakes, I'd strongly suggest having a EXPERIENCED friend; who knows what they're doing help you out for your first time. Brakes are a pretty important component of your car and needs to function properly!!! If you don't have a friend like that, take the car to a professional. You don't know, what your don't know!
    NO you DO NOT crack the bleed valve on your calibers! That's a surefire way of getting air into your braking system. There shouldn't be any junk behind your caliber piston, if you properly maintain your braking system. Brake systems flush-out every 3-5 years; Toyota doesn't recommend it but other OEM's like VW & Honda do.

    I can watch plenty of videos on how to defuse a bomb; but that doesn't mean I would want to - the stakes are too high.....

    Just my 2-cents.......
     
    #2 BiomedO1, May 1, 2025 at 12:47 AM
    Last edited: May 1, 2025 at 1:10 AM
  3. PriusCamper

    PriusCamper Senior Member

    Joined:
    Mar 3, 2012
    11,846
    4,799
    0
    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    I disagree... Brake systems are very simple and straight forward and the fear related to them causes so called "Professionals" to charge hundreds of dollars for something that's a super easy 20 min job once you've done it enough times. It's not much different then changing batteries in an expensive machine.