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Air Bleeding with techstream

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by Naimc, Oct 6, 2023.

  1. Naimc

    Naimc Junior Member

    Joined:
    Sep 7, 2021
    16
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    Location:
    Montreal
    Vehicle:
    2017 Prius Prime
    Model:
    Upgrade
    This is has been on my do list for while, I did not know what do expect here is my mini-summary.

    I used an ebay mini VCI and a 2021 version of techstream ( one with a loader that by-passes the requirement for a license)


    Prius AirBleed over view, total time 1h30

    Start of techstream / select the ABS/VSC/TRAC , the under utility AirBleed..
    upload_2023-10-6_16-13-55.png

    the entire process has multiple reminder for re-adding fluid to the Max line
    upload_2023-10-6_16-18-57.png

    The High Pressure tube ... step is all automated.
    upload_2023-10-6_16-19-35.png

    The braking system makes a bunch of noices.
    upload_2023-10-6_16-20-19.png

    An other automated step.
    upload_2023-10-6_16-21-10.png

    Finally the person in the driver's seat start interacting with the brake pedal, this goes on for a few cycles.
    upload_2023-10-6_16-21-48.png

    Next step start with reminder to check fluid ? why nothing has been opened yet.

    Now the real work starts, pedal operator pumps the pedal a few time, we did 3-4

    - Line one, Each wheel goes throught at least 1 cycle of pump brakes 3 times, hold pedal depressed Open bleeder let open till liquid stops flowing, and it clear of bubbles. repeat as many cycles as required.
    This goes on for RR, RL, FR, FL. ( we did 3 cycles on each caliper)

    upload_2023-10-6_16-24-21.png

    Then with foot still on pedal I open the bleeder screws.

    upload_2023-10-6_16-26-17.png

    10 mm wrench on the rear
    8 mm wrench on the front
    upload_2023-10-6_16-27-15.png

    the cycle gets repeated for each wheel :
    upload_2023-10-6_16-28-4.png

    After line 1 is done you start all over for the Line 2 !, but between those steps the car does a Actuator bleeding :

    upload_2023-10-6_16-30-3.png

    - Line 2 bleeding start,

    upload_2023-10-6_16-31-35.png

    Identical to line 1 all over again !, here is the RL slide,

    upload_2023-10-6_16-32-11.png

    When the Line 2 section is finished running around opening bleeder screws is finished the rest is all internal :
    upload_2023-10-6_16-34-10.png

    Noisy stuff and alarms start going off in the car.
    upload_2023-10-6_16-34-35.png

    Pump cycling and valve adjustment, 6 cycles pump is noisy all sorts of alarm and light go off on the dash.

    upload_2023-10-6_16-35-16.png

    It spends allot of time, doing 6 cycles of this step.

    Asking for Fluid check
    upload_2023-10-6_16-36-30.png

    Valve learning part

    upload_2023-10-6_16-37-11.png

    Lights on dash light up again :
    upload_2023-10-6_16-37-40.png

    Done !
    upload_2023-10-6_16-38-10.png

    Total fluid used about 500 ml, and you to be two , or use a rod to keep the pedal depressed when it calls for the bleeder to be opened.

    upload_2023-10-6_16-39-24.png
     
    #1 Naimc, Oct 6, 2023
    eluo likes this.
  2. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    24,902
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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    Thanks for the detailed post!
     
    #2 ChapmanF, Oct 6, 2023
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