ABS, TRACTION CONTROL AND RED YELLOW (!) LIGHTS

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by Krishneel Lal, Jul 10, 2019.

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  1. Krishneel Lal

    Krishneel Lal Junior Member

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    Hello Everyone,

    I have been facing this problem on my 2013 Prius V of the ABS, Traction and the handbrake lights that came on itself I think. I have gone through many posts and so far nothing helped me.

    It was like this, my mom parked the car on a sloping surface at midday. Nothing had happened then. In the night when I wanted to go out to my friends place, all those lights came on. I went to the dealer here, and they tried resetting the code but were unable to and honestly I think they are lost themselves. I forgot the code but it did say "Rear Speed Sensor LH Circuit". I had changed my speed sensor and even tried the paper clip method but it is still there. My friend tried to reset it with his "Autel MaxiSys MS908S Diagnostic Intelligence" but was also unable to do so. One other thing is that the LED Brake lights don't work for the left side either. So I removed it and tried it on the right side and it works. Also, the brakes are somewhat less effective as before.

    I would really appreciate if anyone can help me out here as it has been a week since this headache :(
    20190709_144143.jpg
     
    #1 Krishneel Lal, Jul 10, 2019
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  2. Krishneel Lal

    Krishneel Lal Junior Member

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    Update: It now shows these codes 20190711_162653.jpg
     
    #2 Krishneel Lal, Jul 11, 2019
  3. rjparker

    rjparker Tu Humilde Sirviente

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    Apparently there is a Toyota special way to clear those braking codes (through a relearn process) that most generic code readers can not do. Even then, if the underlying issue is a speed sensor or “foreign object on sensor” (which I had) AND it is still there, the codes will quickly come back. So a Toyota Techstream scanner is the probable requirement. Apparently there is a jumper method on the obd2 connector BUT a wrong connection could fry an ecm.

    CG is ground on the OBD2 connector.

    The next logical question is why the dealer could not fix it. Answer, many dealer mechanics are not that good on things they have not seen before. And they are unlikely to research it.
    Brake, ABS, and traction lights | PriusChat
     
    #3 rjparker, Jul 11, 2019
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  4. rjparker

    rjparker Tu Humilde Sirviente

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    #4 rjparker, Jul 11, 2019
    Last edited: Jul 11, 2019
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  5. Krishneel Lal

    Krishneel Lal Junior Member

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    #5 Krishneel Lal, Jul 11, 2019
  6. borna

    borna New Member

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    Hello Krish , I was wondering did you fix this problem ?
    I just noticed the same thing happening to my 2014 Prius v, Abs , traction control , yellow (!) and the parking brake light as well. Also LED brake light driver side dosent work either!
     
    #6 borna, Oct 28, 2020
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  7. Krishneel Lal

    Krishneel Lal Junior Member

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    Nah bro.. Haven't yet got a fix to it... My left brake light dosent work too.
     
    #7 Krishneel Lal, Nov 2, 2020
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