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Posted on May 13, 2017
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My ABS light is on

Hello, I have an 05 F250 and an 05 Excursion the ABS lights recently came on in both vehicles. I've read that it's probably the VSS in the rear differential. If I replace that myself, will the abs indicator go off automatically?
Some additional information, we used to drive both vehicles all of the time. Back in November 07 we bought a commuter car so our big trucks sit around more than they ever have. I assume moisture got into the VSS and that's what caused the problem. Thanks in advance for any information.

1 Answer

Robert Larose

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  • Expert 198 Answers
  • Posted on May 13, 2017
 Robert Larose
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Joined: Dec 08, 2010
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No... will not reset by itself u will need a abs scan tool to reset it, so if u have a scan tool u can use it to tell u which brake disc abs wheel sensor needs to be CLEANED yes cleaned by letting it sit sensor disk rusted up... clean the rust off disc then use wd40 on it...

5 Related Answers

Anonymous

  • 1010 Answers
  • Posted on Jun 23, 2008

SOURCE: abs light on

I'm a Ford service adviser. There are many reasons for the
abs warning indicator to come on. The usual cause is from a
faulty speed sensor. Either a wheel speed sensor or the
differential speed sensor. I don't think the light is related to your vandalism. You might want to take the truck to an auto parts store and have them read the codes for you. Most auto parts stores will do this for free.
Good Luck

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Dan Prochaska

  • 186 Answers
  • Posted on Jul 10, 2008

SOURCE: Check Engine Light - Tcode P2106

big problem with egr intake passage plugging up need to remove upper intake check passage

Anonymous

  • 659 Answers
  • Posted on Mar 01, 2009

SOURCE: abs warning light on 02 ford escape

check the abs rings on the axles they have a tendency to crack and will set a light. does the vehicle have remote start? Is it an aftermarket system?

Anonymous

  • 1 Answer
  • Posted on Apr 24, 2009

SOURCE: My 2006 F150 abs light

It sounds like you might be having a problem with your Electronic control module. Are the only codes coming up just for the sensor? Have you recently cleaned your engine or driven in very wet weather? If so, water could have gotten into your connections at the modules and causing odd codes. I hope this helps. Jay

Anonymous

  • 155 Answers
  • Posted on Jun 07, 2009

SOURCE: Where is the Speed Sensor on a 1999 Ford F250 7.3 L diesel 4x4?

Check ontop of the transmission bell housing. I believe there's an orange wire going to it.

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Hi, I am new to the website. I am an automotive technitian. If the ABS light is on ,and the speedo wont work, your vehicle speed sensor (vss) is likely the cause! The ABS system depends on knowing the individual wheel speed and the overall vehicle speed in order to properly operate. The fact that your speedo also is out tells me that either the sensor is bad or there is a wiring problem. The ABS light will stay on and will probably be in "limp mode" until the problem is solved.....if you live in a snowy or icy place be careful because it probably wont work! If I am right, even a simple code scanner like an auto parts store has for free use will show a vss code since it will affect other systems in the car such as shifting points and fuel trim. I have no history on your car...and dont even know the type of car it is so I hope this has been helpful!!
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It probably only needs a new VSS (vehicle speed sensor). Since the ABS uses the wheel speed and vehicle speed to determine ABS operaton, is makes sense that the ABS light is on if the VSS failed. The computer also uses the VSS to operate your speedometer.

The speed sensor will be about $40-70 for a manual transmission and about $70 for the automatic transmission. You'll find the speed sensor in the transmission near the CV axles. It is likely you'll be able to reach it yourself and that'll save you money and a trip to the shop.
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I bet you also lose the function of your cruise control when it happens. I would start first with checking the wiring connection on the vehicle speed sensor (also acts as abs sensor). Remove the sensor, clean it up and reinstall. If that doesn't work, replace the VSS.

You will find it on the top of your rear differential.

Side note: If you ever get stuck in the mud/snow and have to rock the truck forward/reverse, sometimes that will trigger your ABS light as well. This will normally reset itself after a few on/off cycles of the engine.
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