1. Attachments are working again! Check out this thread for more details and to report any other bugs.

one rearbrake caliper not braking properly

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Malcolm338, Sep 4, 2014.

  1. Malcolm338

    Malcolm338 Junior Member

    Joined:
    Sep 25, 2012
    27
    2
    0
    Location:
    Carlisle uk
    Vehicle:
    2007 Prius
    Model:
    N/A
    I have a 2007 Prius gen II with 50,000 miles on it I took it for MOT ministry of transport annual test and it failed on rear brakes. The near side puled 82kg the off side puled 242kg I puled the pads and copper slipped the pads and sliders the piston pushed bake with ease reassembled them and re tested them witch increased the near side by 5kg. Has any one had this problem and how did you rectify it.
     
    #1 Malcolm338, Sep 4, 2014
  2. valde3

    valde3 Senior Member

    Joined:
    Jun 28, 2014
    2,002
    745
    0
    Location:
    Finland
    Vehicle:
    2004 Prius
    So problem is with normal brakes? And not with e-brake? E-brake is drum brake that is inside of a disc.

    If problem is with normal brakes and caliber sliders work:

    Try to bleed rear brakes with techstream. Rear bleeding can only be done with that and doesn’t require pedal pusher. If the amount/pressure of fluid getting out of both rear calibers is about the same and brakes still don’t work then you need to replace the caliber. If it really doesn’t bleed out from faulty brake there might be something blocked or more series brake problem.
     
    #2 valde3, Sep 4, 2014
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,199
    6,464
    0
    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    It sounds like the caliper is binding up on the caliper pins instead of sliding freely so that the two pads get a similar amount of pressure. You might try replacing the pins first, if the problem continues maybe the caliper itself has to be replaced.
     
    #3 Patrick Wong, Sep 4, 2014
(You must log in or sign up to post here.)