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Abs and Vsc light after brake replacement

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Tony714, Sep 14, 2019.

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  1. Tony714

    Tony714 Member

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    Hey guys. I am In the weeds here. Just performed a front and rear brake replacement on a 05 Prius and silly me thought it was just a simple replacement.

    Now the ABS light, the VSC light and the e-brake light are on, and brakes are at like 75%.

    What did I do wrong and how can I fix it.
     
    #1 Tony714, Sep 14, 2019
  2. Raytheeagle

    Raytheeagle Senior Member

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    Have you tried pulling the 12 volt battery lead for resetting the codes?

    Did anything occur during the work?
     
    #2 Raytheeagle, Sep 14, 2019
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  3. Tony714

    Tony714 Member

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    Normal replacement, but only after did I read I had to pull the ABS relay.

    The brake function really worries me.
     
    #3 Tony714, Sep 14, 2019
  4. JC91006

    JC91006 Senior Member

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    Did you do rear brakes or front? Why would it be at 75% if you changed them?
     
    #4 JC91006, Sep 14, 2019
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  5. Tony714

    Tony714 Member

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    Front and rear. And hoses so I had To bleed. And by 75% I mean performance, before I had solid brakes. Now they are barely functioning.

    And the e brake, abs and Vsc light are on
     
    #5 Tony714, Sep 14, 2019
  6. Raytheeagle

    Raytheeagle Senior Member

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    Brake actuator original?
    Had issues with this previously?
     
    #6 Raytheeagle, Sep 14, 2019
  7. JC91006

    JC91006 Senior Member

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    Oh you bled, that's the problem. The car requires techstream software to bleed, electronic brake actuator
     
    #7 JC91006, Sep 14, 2019
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  8. Tony714

    Tony714 Member

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    No idea. Bought the car four months ago and no brake problems previously. I changed the front disks and pads last night and did the rears today. Bled the system and it just popped up.

    If I disconnect the battery, what am I facing there?
     
    #8 Tony714, Sep 14, 2019
  9. Tony714

    Tony714 Member

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    Soooo if I dont have that, what do I do?
     
    #9 Tony714, Sep 14, 2019
  10. Raytheeagle

    Raytheeagle Senior Member

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    Find someone who does;).

    In SoCal that isn’t so tough:).

    But if you pull the 12 volt, it resets the computers, so it’s a chance to start fresh(y).
     
    #10 Raytheeagle, Sep 14, 2019
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  11. Tony714

    Tony714 Member

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    I have heard that pulling the battery requires various resets. Any thoughts on that Ray?
     
    #11 Tony714, Sep 14, 2019
  12. Tony714

    Tony714 Member

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    And how long do I have to keep it unplugged
     
    #12 Tony714, Sep 14, 2019
  13. Raytheeagle

    Raytheeagle Senior Member

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    With what you’re dealing with, having to reset the radio and the windows should be the least of your worries ;).
     
    #13 Raytheeagle, Sep 14, 2019
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  14. JC91006

    JC91006 Senior Member

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    You need to have that.

    I can help you cause I have the software, but I've never done it either. Here is a video, skip to 1:30

     
    #14 JC91006, Sep 14, 2019
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  15. Raytheeagle

    Raytheeagle Senior Member

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    I’d say at least 5-10 minutes;).

    But I would do longer to be safe(y).
     
    #15 Raytheeagle, Sep 14, 2019
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  16. Tony714

    Tony714 Member

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    Ooookkkkk Ray. You wanna esplain to me how to do that?
     
    #16 Tony714, Sep 14, 2019
  17. Raytheeagle

    Raytheeagle Senior Member

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    Let’s clear the brake situation before we muddy the waters with other collateral damage ;).

    Get the brakes sorted and we can walk you through the next steps (y).
     
    #17 Raytheeagle, Sep 14, 2019
  18. Tony714

    Tony714 Member

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    All right. So disconnect the battery and then wait 15-20. Is that all I do?
     
    #18 Tony714, Sep 14, 2019
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  19. Raytheeagle

    Raytheeagle Senior Member

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    Don’t close the hatch (or drape a towel across the latch) to avoid the crawl of shame ;).

    Good luck and keep us posted (y).
     
    #19 Raytheeagle, Sep 14, 2019
  20. Tony714

    Tony714 Member

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    Appreciated. Will update
     
    #20 Tony714, Sep 14, 2019
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