1999 Dodge Ram Logo
Posted on Apr 05, 2009
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Abs brake lights come on and stay on

1999 Dodge Ram 1500 ABS light on constantly parking brake light on constantly, speedometer doesn't work. Truck drives fine ,brakes a littletouchy at first but then clears up drives great! What gives and how do I fix the problem!

  • 1 more comment 
  • mheidrick1 Apr 05, 2009

    I have read this spped sensor is on top of the rear end. is it bolted

    on or plugged in? How do I identify it?? Thanks

  • Anonymous Mar 19, 2014

    I have abs and brake light on and changed speed sensor but it did not fix problem

  • Anonymous Mar 23, 2014

    Abs light flashes constantly. Periodically the red parking brake light comes on then the yellow abs light is steady

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  • Master 4,669 Answers
  • Posted on Apr 05, 2009
Anonymous
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Replace the speed sensor in the rear end.

  • Anonymous Apr 05, 2009

    It is right on top of the center of the diff. It is the only electrical plug going to the differential. Unplug it and remove the bolt that holds it in and wiggle and twist it out.

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