One side of brakes not working

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Logan_silva123, Oct 16, 2023.

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  1. Logan_silva123

    Logan_silva123 New Member

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    Couple days ago a wheel stud broke when removing a lug. So I go in, I take the the whole bracket, and caliper off in one piece, hang it up. Then not thinking, I hit the breaks to put it in neutral in order to fix the wheel stud. That closed the caliper of course and had trouble getting it all back together. Had to push it back open to fit it back over the rotor. Got it all back together but now I have abs, e break, and break system warning lights on. And it feels like the side I took apart is now not working at all or not as well, from feeling rotor temps. Does anyone have suggestions, I don’t wanna go to a shop and have them tell me it’s the whole abs module because I messed up when taking it apart
     
    #1 Logan_silva123, Oct 16, 2023
  2. ChapmanF

    ChapmanF Senior Member

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    Start by getting the trouble codes from the brake system. If you don't have a scan tool that can do it, get them like this:

    Blink (a/k/a Flash) Codes – How to. | PriusChat

    Then we'll know more. If there was no brake fluid that escaped around the piston, things might not be too bad. If any did, you might have to revisit the way you got it all reassembled, and get some more fluid, and go through the bleed procedure.
     
    #2 ChapmanF, Oct 16, 2023
  3. Tombukt2

    Tombukt2 Senior Member

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    Did you crack the fitting on the caliper in order to squeeze it down or do whatever it is you did to get it back together?
     
    #3 Tombukt2, Oct 16, 2023
  4. mr_guy_mann

    mr_guy_mann Senior Member

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    Retrieve the codes as suggested. Given the description of events, I would expect to find a "hydraulic system malfunction" code for whichever front brake was removed.

    Basically that means that the brake control ecu "saw" low pressure at the disconnected brake, and interpreted it as a big fluid leak. If that is accurate, the ecu would set codes and keep the hydraulic valves for that brake closed.

    Posted via the PriusChat mobile app.
     
    #4 mr_guy_mann, Oct 16, 2023
  5. Logan_silva123

    Logan_silva123 New Member

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    #5 Logan_silva123, Oct 20, 2023
  6. Logan_silva123

    Logan_silva123 New Member

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    No didn’t damage the caliper or the break line at least that I can see
     
    #6 Logan_silva123, Oct 20, 2023
  7. Tombukt2

    Tombukt2 Senior Member

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    Crack meaning to open the line fitting to get the fluid to squirt out so you can squeeze the caliper did you open the zerk fitting the little silver thing?
     
    #7 Tombukt2, Oct 20, 2023
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