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Old 03-25-2012, 04:47 PM   #1
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ESP, BAS light

Well it has been awhile since I have done anything illegal so I figured I would..

Just kidding,

The other day I went around a corner at about 50 and my ESP light came on. I thought it was on but upon cycle it went away.

Today I was doing the same, but at around 45 and my ESP and BAS light came on.

Searching around here it sounds like it is most likely a tire pressure sensor, wheel sensor (would that be the same?) or ABS module. If one of these are bad will the computer kick out a fault I can read with a scanner? Hate to start throwing parts at it.

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Old 03-25-2012, 04:51 PM   #2
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One of your tires may have lost traction momentarily. The light will come on in that instance. That is not a defect.

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Old 03-25-2012, 04:58 PM   #3
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Will the light stay on the remainder of the trip?
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Old 03-25-2012, 05:31 PM   #4
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Re reading your post I think you mean it came on and stayed on, but went out the next time you restarted the vehicle. No, this is not normal.

When you lose traction the lights will flash on while the system is active and then go out as soon as traction returns to normal. If the lights stay on solid, this indicates a fault within the system. The most likely faults can be clock spring or abs sensors (mine did the same and showed 3 instances of failed clock spring). Worst case could be the ABS system itself. Dealer should be able to tell you from the diagnostics readout.
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Old 03-25-2012, 05:35 PM   #5
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Correct, came on and stayed on.
Is there anyway to know without taking to a dealer. Dealer is 80 miles away...I could probably replace a few parts cheaper then a trip.
When a clock spring fails (I assume this would be in the steering wheel), are there any signs? If it is a ABS system it sounds like there could be many components. Mine is not under warranty so that could possibly suck (i.e. dig into my regear budget).
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Old 03-25-2012, 10:10 PM   #6
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After some more research it sounds like if you have a faulty wheel speed sensor you will have a fault so I will swing by autozone and check it out. If so I will replace if not I will look into a clock spring and see how difficult they are to assemble.
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Old 05-06-2012, 04:42 PM   #7
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All 4 sensors came in. Going to install the rear first...this seems easier since the tires do not have to be removed. Curious as to this fixing the problem or not!

If the rear does not, I will try the front sensor replacements. Wish me luck.
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Old 07-19-2012, 08:30 PM   #8
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Well...tried the rear a month ago or so and then just the front wheel speed sensors today and still no luck. I disconnected the - terminal on the battery waited about 10 minutes, came back hooked up... and then hooked up the OBD2 scanner and erased any possible codes and...same esb/bas light and traction control light.

So if that did not fix it, what does that leave? A clock spring, ABS system...or?

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Old 07-19-2012, 08:38 PM   #9
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you have checked all your fuses?

steering off center?
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Old 07-19-2012, 08:42 PM   #10
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Quote:
Originally Posted by nmdriver
Well...tried the rear a month ago or so and then just the front wheel speed sensors today and still no luck. I disconnected the - terminal on the battery waited about 10 minutes, came back hooked up... and then hooked up the OBD2 scanner and erased any possible codes and...same esb/bas light and traction control light.

So if that did not fix it, what does that leave? A clock spring, ABS system...or?

Clock spring usually goes out slow. Signs,
Intermittent air bag light when going around corners. Intermittent horn on or not working at all. Finicky cruise control. ESP bas light on sometimes or all the time. Ect. I have replaced my clock spring twice. And have had all these symptoms.

Also make sure your steering wheel is dead center driving down the road. Mine is very sensitive to this.
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Old 07-19-2012, 08:54 PM   #11
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Good point. I have had zero issues with air bag, horn and cruise control.

My steering actually is a tad bit cocked when I am going down the road.

I will see if I can schedule a time to align it.

My big concern is making sure that the Jeep's version of traction control (forget what it is called) works since I am going to Moab at the end of the month and I do not have lockers...
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Old 07-19-2012, 08:58 PM   #12
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Quote:
Originally Posted by nmdriver View Post
Good point. I have had zero issues with air bag, horn and cruise control.

My steering actually is a tad bit cocked when I am going down the road.

I will see if I can schedule a time to align it.

My big concern is making sure that the Jeep's version of traction control (forget what it is called) works since I am going to Moab at the end of the month and I do not have lockers...

you can recenter your steering yourself by just loosening the 2 bolts on your turnbuckle and then turning either direction till steering is back centered and then tighten...a procal helps with this as well
see link
Project-JK.com - Jeep JK Wrangler Resource » Basic Do-it-Yourself Jeep JK Wrangler Front End Alignment
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Old 07-19-2012, 09:04 PM   #13
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Kind of crazy that the steering wheel being off center would throw that code. I wonder why? It is off probably 10 to 15 degrees.
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Old 07-20-2012, 01:07 AM   #14
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Center the steering wheel and the lights should go away. Worked for me. 10-15 minutes couldn't hurt to try.
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Old 07-20-2012, 10:15 AM   #15
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Kind of crazy that the steering wheel being off center would throw that code. I wonder why? It is off probably 10 to 15 degrees.
Worked for you right after installing the wheel speed sensors or works whenever your light goes on?
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Old 07-21-2012, 08:41 PM   #16
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Drove around light still on. Next try alignment.
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Old 07-21-2012, 09:08 PM   #17
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Quote:
Originally Posted by nmdriver
Drove around light still on. Next try alignment.
As soon as I replaced my wheel sensor all the lights went off.

Are you having performance issues?

My faulty sensor lit up the dash but their was no performance issues. Just did not have ESP/ABS/engine drag (?)
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Old 07-21-2012, 09:20 PM   #18
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Did you center your steering wheel?
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Old 07-21-2012, 10:37 PM   #19
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Did you center your steering wheel?
Not yet. I tried driving with it straight but ran out of raod.

Do not think I have any performance issues but then again with the massive amount of horsepower I have I would never know.
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Old 07-21-2012, 10:46 PM   #20
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Not yet. I tried driving with it straight but ran out of raod.

Do not think I have any performance issues but then again with the massive amount of horsepower I have I would never know.
You can't drive it straight. You have to center the wheel by adjusting the drag link. I can almost promise you this is your problem.
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Old 07-29-2012, 04:03 PM   #21
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Got the alignment done, drove home and light stayed on...

Disconnected the battery overnight and reconnected and light still on.

Went for drive around the block and whabam! Light off.

I guess I now have 4 good used wheel speed sensors!
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Old 07-29-2012, 05:55 PM   #22
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There's a sensor in console that can trip the ESP light on, it's like motion sensor. Someone out here stated that cutting wire could turn off ESP, BAS and anti-lock brakes bs.
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Old 07-29-2012, 06:31 PM   #23
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Originally Posted by jgaley69
There's a sensor in console that can trip the ESP light on, it's like motion sensor. Someone out here stated that cutting wire could turn off ESP, BAS and anti-lock brakes bs.
This (pic)

I broke a wire doing balljoints which disabled the whole system.
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