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

Prius Hybrid System Check Light on after brake job

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by anthdc, Feb 22, 2017.

  1. anthdc

    anthdc Junior Member

    Joined:
    Feb 19, 2016
    4
    1
    0
    Location:
    Concord
    Vehicle:
    2015 Prius
    Model:
    Two
    I had my mechanic disconnect the battery before doing the brake job. When I went to turn the car back on the car came up with the yellow triangle exclamation point. Any ideas?
     
    #1 anthdc, Feb 22, 2017
  2. Lucifer

    Lucifer Senior Member

    Joined:
    Aug 23, 2015
    1,014
    486
    0
    Location:
    Nh
    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Advanced
    Turn it off and on a few times, if the light stays on, read the obd2 codes, but think about visiting a dealer if it stays on.
     
    #2 Lucifer, Feb 22, 2017
  3. anthdc

    anthdc Junior Member

    Joined:
    Feb 19, 2016
    4
    1
    0
    Location:
    Concord
    Vehicle:
    2015 Prius
    Model:
    Two
    I turned if off three times, nothing happened. I have a ScanGauge and it didn't pull any codes. I don't want to have to take it to the dealer just yet. My mechanic read somewhere that if you just let it sit over night maybe it might fix it which I doubt. Also, I have not tried the reset correctly to get the engine to turn on. I'm thinking shouldn't the ICE turn on even if the hybrid system is failing?
     
    #3 anthdc, Feb 22, 2017
  4. tankyuong

    tankyuong Senior Member

    Joined:
    Nov 9, 2012
    1,555
    661
    0
    Location:
    Central MO
    Vehicle:
    2012 Prius c
    Model:
    II
    Does your car driver normal
     
    #4 tankyuong, Feb 22, 2017
  5. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    24,915
    16,216
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    A ScanGauge may well not see any codes related to the hybrid warning light, unless you program it with suitable XGAUGEs (I don't remember whether those have been found for the Gen 3 hybrid DTCs or not).

    If there's the light, there certainly are codes; just a matter of getting the equipment to read them, or getting the car to someone who can.

    -Chap
     
    #5 ChapmanF, Feb 22, 2017
  6. walter Lee

    walter Lee Hypermiling Padawan

    Joined:
    Oct 26, 2009
    1,126
    376
    5
    Location:
    Maryland
    Vehicle:
    2010 Prius
    Model:
    III
    If there is anything connected to the OBDII - it could be a short which could be solved by turning off the Prius disconnecting the OBDII device/cable, turn the Prius back on, reconnecting the OBDII.
     
    #6 walter Lee, Feb 24, 2017
  7. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
    Oct 17, 2010
    56,702
    39,241
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Did the brake job entail replacing pads, and pushing the caliper pistons back to accomodate them? If so, I'd guess prior to reconnecting the battery the mechanic neglected to do multiple pushes of the brake pedal, remove excess travel, which the car subsequently detected..

    Just disconnecting the battery is insufficient: you need to "clean up the clues" before reconnecting, or it's all for nought.
     
    #7 Mendel Leisk, Feb 24, 2017
(You must log in or sign up to post here.)