3 brake dash warning lights after new front bearings and brake pads and rotors

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by eatdrumss, Apr 25, 2013.

  1. eatdrumss

    eatdrumss Junior Member

    Joined:
    Dec 12, 2009
    57
    3
    0
    Location:
    cleveland
    Vehicle:
    2007 Prius
    Model:
    N/A
    i have the brake (!) the ABS and the VSC lit up after i got new bearings and new brake pads and rotors, the car was also stalling before the mechanic removed these bearing "dust cover" circles that must have been causing speed sensor interfernce bc the spedometer was stuck on 0....so the car seems to be done stalling after those were removed and all the big lights went off then i hit the brakes a few miles later and those three lights came on....anyone have any ideas.
     
    #1 eatdrumss, Apr 25, 2013
  2. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
    10,096
    4,829
    0
    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    Yes I have an idea. Mechanic allowed air into the brake fluid system and now the ABS system is very unhappy. Do not drive the car until this is repaired.

    On a PRIUS If you open the brake fluid to atmosphere you must use Toyota Techstream software to manipulate the many relays that control brake fluid metering in order to properly bleed all the air of the brake system. It is very hard to bleed the brakes without it.

    There have been a few clever posters that have been able to trick those relays out but that is beyond the scope of this discussion. Search if interested.

    Ask mechanic if he opened the brake bleeders. If yes ask him if he has Toyota Techstream software. If no
    get the car to the dealer asap.

    Btw, we have seen this hundreds of times. You are not alone.

    Good luck!
     
    #2 edthefox5, Apr 25, 2013
    eatdrumss likes this.
  3. nh7o

    nh7o Off grid since 1980

    Joined:
    Dec 10, 2011
    1,686
    340
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    II
    You can get error codes from the ABS system. Short the pins 4 and 13 on the DLC3, and watch for the blinking lights on the dash when car is on.

    ABS, VSC Lights... Weird!! | PriusChat

    That can possibly eliminate some guess work.
     
    #3 nh7o, Apr 26, 2013
(You must log in or sign up to post here.)