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Master cylinder Replacement

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by C-in-DC, Feb 14, 2023.

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  1. Mendel Leisk

    Mendel Leisk Senior Member

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    Page 32~35 of the attachment? @ChapmanF will hopefully have a look and confirm.
     

    Attached Files:

    #21 Mendel Leisk, Feb 18, 2023
    Last edited: Feb 18, 2023
  2. ChapmanF

    ChapmanF Senior Member

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    Looks like the procedure to me.
     
    #22 ChapmanF, Feb 18, 2023
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  3. C-in-DC

    C-in-DC Member

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    Getting some new codes

    u0142 lost communication with body control module b

    u0155 lost communication with instrument panel cluster pic control module

    c1311 open circuit in main relay 1

    I’m thinking this is when I was tinkering with fuses earlier.
     
    #23 C-in-DC, Feb 18, 2023
  4. C-in-DC

    C-in-DC Member

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    Thanks. I found the bolt on Page 51 on the floor mat. It might have to do with the brake lights staying on. Also, see the stop light switch is not engaged with the pedal like @ChapmanF asked initially.

    I did not do any of the pedal adjustment info show so this is of great importance and help. .
     
    #24 C-in-DC, Feb 19, 2023
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  5. C-in-DC

    C-in-DC Member

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    This video looks like it explains it. Thank you @abubin







     
    #25 C-in-DC, Feb 19, 2023
  6. ChapmanF

    ChapmanF Senior Member

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    While there are instructions there for the pedal height adjustment, I would say one thing:

    If the master cylinder has just been replaced, and the pedal height was adjusted ok before, and it now seems to need any adjustment, the very first thing I would do is check that the new master cylinder got installed all the way flat down to the firewall, with the gasket present (and not doubled up with the old gasket or anything), and so on.

    First double-check all of that. Only then, if the pedal height still seems to be off, proceed to the adjustment as shown.
     
    #26 ChapmanF, Feb 19, 2023
  7. C-in-DC

    C-in-DC Member

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    C1451 is no more. Thinkdiag will bleed the prius abs properly if using a SAMSUNG not an IPHONE.
     
    #27 C-in-DC, Feb 19, 2023
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  8. C-in-DC

    C-in-DC Member

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    #28 C-in-DC, Feb 19, 2023
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  9. ChapmanF

    ChapmanF Senior Member

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    Woo hoo!
     
    #29 ChapmanF, Feb 19, 2023
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  10. C-in-DC

    C-in-DC Member

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    Spoke too soon! catalytic converter is still dirty. Check engine light came on again. Looks like two doses of cataclean weren’t enough. Gotta get more aggressive. This thread’s over though
     
    #30 C-in-DC, Feb 19, 2023
  11. LiberJinanKing

    LiberJinanKing New Member

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    @Mendel Leisk Could you tell me where to find a pdf like this? I have a 2015 Prius V two ready to replace the brake master cylinder, thanks.
     
    #31 LiberJinanKing, Nov 1, 2023
  12. Mendel Leisk

    Mendel Leisk Senior Member

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    I don’t have pdf of Prius v Repair Manual; I don’t believe there is an “official” version, and I haven’t found one. Post #21 attachment may be sufficient; it’s for gen 3 hatchback. Taking out a short term Toyota Tech Info subscription would be best to ensure you have correct and up-to-date.
     
    #32 Mendel Leisk, Nov 1, 2023
  13. C-in-DC

    C-in-DC Member

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    Nevermind
     
    #33 C-in-DC, Nov 5, 2023
    Last edited: Nov 5, 2023
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