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Old 09-28-2016, 01:57 AM
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ABS and TCS Light on

Hello,

So I have a 2012 JK Wrangler Unlimited Sport, manual transmission (don't know if that would have any effect). Lights came on after not having any strenuous driving associated with it. Normal pavement driving around town, I turned the jeep off, visited with family, and when I got in to go home, ABS and TCS lights came on and remained on. Lights remained on after turning vehicle off and restarting also.
I have a personal code reader, and, I was thinking there must be a code associated with this right? After plugging it in, there were no codes found that were bad.. so now I am at an impasse, I hope someone else has seen this or knows a quick fix (hopefully), and an inexpensive way to correct. Any insight would be greatly appreciated!!

-B1gr3d16

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Old 09-28-2016, 10:22 AM   #2
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Is the steering wheel centered when you're driving in a straight line? Even if it is just a fraction off center it can trigger this kind of problem.

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Old 09-29-2016, 12:45 AM
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As far as I can tell, the steering wheel is centered. I haven't had any problems with my alignment either, and I haven't hit any noticeably large bumps while driving that could have shifted the alignment either.

But what would cause this to change and become a problem all of the sudden?
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Old 09-29-2016, 09:11 PM   #4
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I had the same issue and my dealer found that the problem was a faulty wheel speed sensor.
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Old 09-29-2016, 11:36 PM   #5
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Quote:
Originally Posted by 162884 View Post
I had the same issue and my dealer found that the problem was a faulty wheel speed sensor.


Just went through this and had the same issue.


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Old 09-30-2016, 04:32 PM   #6
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I'm glad I searched before I started typing a thread. Did anyone run any codes. I have had this problem, but it is intermittent and the lights generally don't stay on. Dealer says I'm 2k out of warranty (jerks). Any way I can tie this to the collision (I was rear ended 2 weeks ago and never had this before).
I did run the scanner and saw the system had saved a "over voltage" and "brake switch".
BTW 2015 Wrangler Unlimited Sport running CL Sahara Wheels and tires.
Which wheel speed sensor have you guys replaced?
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Old 10-01-2016, 10:02 PM
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I ran my OBD II reader on it and it threw no new codes. But Im going to get the codes read at a repair shop.

But the wheel sensor? This might be a dumb question.. but where would that be located? in all the tires, in the steering wheel?

Thank you for all the replies.
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Old 10-17-2016, 08:59 PM   #8
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Speed sensors are cylinders that screw in near the brake calipers. Unfortunately the app (iPhone) no longer works and I can't post pics for you.
For my issue I'm keeping my fingers crossed I've fixed it.
I'll go ahead and embarrass myself. I replaced my front bumper and installed a winch due to a collision (not my fault so it worked out great). Anyway, I was super concerned something was broken we didn't find. Always go with simple checks first. I double checked and my ground terminal wasn't as tight as I thought it should be. I have fixed that and for the last 4 days I can't get the problem to surface.

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