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

VSC light is staying on

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by ksimmonsnj, Feb 15, 2012.

  1. Mr.Electric

    Mr.Electric Member

    Joined:
    Jan 18, 2011
    287
    102
    0
    Location:
    San Francisco
    Vehicle:
    2010 Prius
    Model:
    IV
    What is the reset procedure that you performed by pumping the brakes? Did you get lucky or read a specific set of instructions?
     
  2. drroone

    drroone Junior Member

    Joined:
    Jan 20, 2014
    8
    0
    0
    Vehicle:
    2010 Prius
    Model:
    II

    +1 on this because i am having the same issue. i have a awkward driveway that sometimes when i drive up one of the tires isn't able to catch a surface for a second or two and then it will catch the road afterwards. I am thinking that triggered that response. it's been on for a few days now. i haven't had time to go to the dealer. Just wanted to know some info on whats a matter with the car.
     
  3. drroone

    drroone Junior Member

    Joined:
    Jan 20, 2014
    8
    0
    0
    Vehicle:
    2010 Prius
    Model:
    II
    can anyone chime in on this?
     
  4. roma1017

    roma1017 New Member

    Joined:
    Mar 16, 2016
    1
    1
    0
    Location:
    State College, PA
    Vehicle:
    2010 Prius
    Model:
    N/A
    Copied this from another forum

    "Check VSC system warning:

    Scangauge cannot read these error codes, nor reset this light.

    It would appear that regen braking, traction control, and possibly some anti rollover control is disabled this warning light is on. So it is both fuel inefficient and possibly dangerous to drive with this light on.


    First find the obd computer plug, under the dash, near your left knee, where your scan gauge plugs in.
    Turn car OFF.
    Use a paper clip or wire to jump TC to CG.
    TC is on the top shorter row, 4th pin starting from left
    CG is bottom longer row, 5th pin starting from left
    See diagram:

    __/_@_@_@_TC_@_@_@_@_\
    _/__@_@_@_@_CG_@_@_@__\


    Note: I saw some posts when researching this suggesting a jump between TS and CG. (TS is just to the left of TC ie 3rd pin). While this may/may not work on some Toyotas. On the HIHI this doesn't seem to do anything other than cause a Hybrid System Warning to be thrown. So don't.

    Once the jumper is in place, To read your VSC error codes:

    1. Turn car to ON, you should see the message "VSC DIAG".It will read "VSC DIAG OK" if there are no codes.

    2. Brake warning lights will go off for 4s, then start to flash. Count the flashes, these are the error codes that caused the light to come on. They may be real, and something may need to be fixed. If the car really is broken, just resetting the light won’t do much, as it will soon trip again.

    If the brake lights continually flash, then there are no codes and the display should read: "VSC DIAG OK"
    Once the jumper is in place, To reset you VSC error codes and lights:

    1. turn car on.

    2. Press the bakes (enough to make the tail lights come on, not all they way) and release 8 times. Once you have done it enough times the display will change to "VSC DIAG OK"

    Remember to remove jumper wire when done.
    You must complete the 8 presses within 5 seconds

    I needed to do this after changing my brake pads caused this error to flag. Very neat. I suspect there are other diagnostic modes that could be found.

    As always, sometimes error lights get thrown for no reason, just clear them and don't worry. But sometimes they get thrown for a reason. Ignoring real problems in your car could be dangerous for you and/or the car. "


    This turn of my VSC/Traction light, hopefully it can help someone else.
     
    David Hazel likes this.
  5. David Hazel

    David Hazel Junior Member

    Joined:
    Mar 26, 2016
    1
    0
    0
    Location:
    Baltimore, MD
    Vehicle:
    2010 Prius
    Model:
    II
    Wow, just browsing the forum and ran across this. I've been looking at that light since I purchased my 2010 used about 7 months ago. The car had been recently repaired from an accident with front end damage and the mechanic never reset it Just went outside to do the little jumper trick and light out!! Cool, thanks.
     
  6. Blaze271

    Blaze271 Junior Member

    Joined:
    Feb 3, 2019
    1
    1
    0
    Location:
    Chicago
    Vehicle:
    2010 Prius
    Model:
    Four
    Had these lights come on for no reason after temps got down to -55 with wind chill. Spent 3 days fretting about possible problems and took apart each caliper, cleaned and greased. Finally found this post and problem now solved. 55 miles and still no problems. Thanks
     
    Raytheeagle likes this.