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-   -   ESC light (http://www.wranglerforum.com/f274/esc-light-254605.html)

Ricky Dog 07-09-2013 01:16 PM

ESC light
 
Made a railroad crossing a few days ago and the ESC light came on and power dropped off to about 50%. Cycled the ignition and all was OK.

Hit a pothole today light back on. Cycled the ignition all was good for about another 20 miles, hit a bump light back on..
Anyone else experience anything similar and what was the cause. I'm thinking an unsecured ground wire someplace.

Scott2373 07-09-2013 01:44 PM

Definitely sounds like some sort of loose wire causing an arc or short. Take it to the dealer and don't mess around with it, as long as you're still under warranty. If not, have fun...I hate electrical gremlins *ugh*

inspwylie 07-09-2013 02:30 PM

Look in your manual, It says if you put bigger tires on it could confuse the ECS. It tells you how to disable the ESC.

Ricky Dog 07-09-2013 02:39 PM

33"s have been on it since day 1. Now 32.5K miles with no issues. However I did rotate them about 700 miles back, I always rotate at 5000 mile intervals when I change the oil.
After a little research Im leaning toward a shorted wire, perhaps to the cam shaft sensor of all things..

Service appt. in the morning !

derf 07-09-2013 03:15 PM

The fact that you're running over rough surfaces when it happens leads me to believe that the signals from the wheel sensors is confusing the computer too much. If the wheels all start going different speeds the computer may decide to give up trying to figure it out and throw a code.

Getnoff 07-09-2013 05:24 PM

Quote:

Originally Posted by derf (Post 3943103)
The fact that you're running over rough surfaces when it happens leads me to believe that the signals from the wheel sensors is confusing the computer too much. If the wheels all start going different speeds the computer may decide to give up trying to figure it out and throw a code.

I agree. Pretty easy to change out also.
Troy

Ricky Dog 07-09-2013 09:45 PM

Yeah, but highway speeds on a state highway is not like highway speeds over the Lunar surface..

We'll find out manana with the dealer service dept, I guess..

derf 07-09-2013 11:41 PM

I had the ESC light come on when I was driving down the interstate because I hit a bump in the road with the cruise control on. Wouldn't go off until I stopped, shut the engine off, and started it back up.

Given the number of people who post about problems with ESC that turn out to be no real failure, I'd put my money on the programming being way too sensitive.

Ricky Dog 07-10-2013 02:41 PM

Quote:

Originally Posted by derf (Post 3945030)
I had the ESC light come on when I was driving down the interstate because I hit a bump in the road with the cruise control on. Wouldn't go off until I stopped, shut the engine off, and started it back up.

Given the number of people who post about problems with ESC that turn out to be no real failure, I'd put my money on the programming being way too sensitive.

You were right ! No real problem.. Service dept Flashed Transmission and Power Train. Now it's not a "Lazy Shifter" holding the gears longer before the auto-shift and more quick to lock the gear, rather than riding the clutches.

Purposefully ran over rough railroad crossing several times trying to get the lights & codes back, on the way home. Nada !

derf 07-10-2013 03:16 PM

Nice!

Glad to hear you got it sorted out. :thumb:

Ricky Dog 07-11-2013 04:27 PM

Back at the dealership, not fixed..

michiganadam 07-11-2013 04:59 PM

Spun my tires in sand (not aired down) in 2 wheel drive while completely still and it turned the abs/bas/esc lights on.

pretty retarded.

BacaraJKU 07-11-2013 05:06 PM

Last time I was driving on the beach in loose sand my esc light turned on and stayed on for probably 30 min. Finally went off, but my guess was a tripped up wheel sensor that fixed itself. I'll be keeping an eye on this, hopefully doesn't break after warranty runs out.

michiganadam 07-11-2013 06:01 PM

Quote:

Originally Posted by BacaraJKU (Post 3951700)
Last time I was driving on the beach in loose sand my esc light turned on and stayed on for probably 30 min. Finally went off, but my guess was a tripped up wheel sensor that fixed itself. I'll be keeping an eye on this, hopefully doesn't break after warranty runs out.

i have a can bus scanner and pulled the ABS codes (theyre still stored even if the light turns off, unless you pull the battery cable), and it said, basically, two of the sensors detected no wheel speed

no shit, the wheels were stopped. so it shut down because it was working properly and it didnt understand what was going on. LOL.

nothing wrong with your jeep.

If you air down it wont do that though

BacaraJKU 07-11-2013 08:25 PM

I was aired down to 13 psi, didn't happen again the entire weekend. I did spin the wheels pretty good and that is what triggered it.

MRT2 08-19-2013 04:06 PM

Had one wheel that was >10PSI over the other wheels. Aired that one down to match, and the ESC light went off. Weird thing was that it was >10PSI for a few weeks now, and it the ESC malfunction came on today of all days? Lets hope airing down the tire keeps it off.

Ricky Dog 08-19-2013 09:21 PM

My case was a broken or shorted wire in the powertrain wiring harness. Dealer installed a new PCM which blew out, then a new harness with another new Powertrain Control Module.

michiganadam 08-21-2013 11:24 AM

ESC sounds like a useless piece of crap after some of these posts


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