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nightcrawlermc 09-04-2011 01:41 PM

ABS, ESP BAS, Traction control, 4WD lights on
2007 Jeep Patriot 2.4L 4WD. I have been having a problem the past couple of weeks with these lights coming on. When the traction control light started blinking intermittently and reducing my speed I had it checked out after I couldn't find anything. The ball joints were about to come out and so I got them replaced. He's a good mechanic so I know he did it right and they were bad. I thought it would solve the problem but didn't. He pulled the codes and got several, we just thought they were probably stored from before so he cleared them. I told him I'd just try to figure it out if they came back on. Lights are still coming on. I unbolted the wheel sensors and cleaned all the dirt and corrosion off, unplugged them cleaned that connection and the problem went away for about 10 miles. Now the lights are back on. ABS, ESP BAS, Traction almost all of the time, 4WD sometimes. Got it scanned at Advance and got B1042, B101F. Looked them up in service manual and it pointed to right speed sensor, checked tire pressure and cleaned it one more time. Still get the lights. The next thing I'm thinking of doing is replacing the sensor, but I've read about wiring problems on these vehicles. Any other suggestions? Any help is greatly appreciated.

Gramps 09-04-2011 04:14 PM

After doing the ball joints did you align it? The steering angle sensor is connected to all of the fault lights that you've mentioned and that sensor will be misaligned after doing ball joints and tie rods. Try stopping and cranking the steering wheel all the way left, then right. If it goes off temporarily then comes back on then it's more than likely an alignment issue.

nightcrawlermc 09-04-2011 07:51 PM

Yeah, I got it aligned. The guy that did the alignment and ball joints said everything in the suspension was good. I tried turning the steering back and forth and the lights stayed on. I drove it a little this afternoon. The lights stayed on most of the time, they did turn off for a minute then back on, then off for 5 seconds then back on. Every now and then when the lights are off and I brake the pedal pulsates a little like the power brakes are not working, then I let off and back on and they're fine. I'm going to try a wheel speed sensor and hope that does it. Might have to take it to the dealer after that, I don't know much about wiring and that seem like the only thing left.

Karen63ca 09-13-2011 11:11 AM

Hay 2007 MK I have a 2007 Compass and it did the same exact thing and I brought it back to the dealer and it was the censor and they had to replace it once that was done the issue has never re-surfaced so I think you will have to replace the censor For me it was a bit costly as I also get a few other things done but I do beleive it was around $100 .. Good Luck ( Unsatisfiied Jeep Compass Owner as I now have to replace the computer and I have 160000KM on it not even 5yrs old)

Gramps 09-13-2011 12:16 PM

Electronics being unpredictable will be a problem with all modern vehicles. Someone has to be on the bottom end of longevity curve. That doesn't mean that I don't empathise.

nightcrawlermc 09-14-2011 07:46 PM

It looks like it was the wheel speed sensor. I replaced it on Saturday and the lights went out and they have not come on since. I ordered it online and it was a Mopar. It only cost me $28 including shipping. It was very easy to replace myself, just take out a bolt, unplug a plug, take it out and run the new one back through. The wheel speed sensor and ball joints are the only problems I've had out of the Patriot so I don't have any complaints, it has 63000 miles on it and I bought it brand new. I love it, it will go anywhere as long as it has clearance.

Gramps 09-15-2011 08:22 AM

Congrats on finding the fix and getting back to us with it!

Palvati 07-05-2012 09:48 PM

I'm having the exact same issue on my 2008 Jeep Patroit, can you tell me in more details on how to fix it?

Maddogpearce 04-23-2013 09:17 AM

2009 Jeep Compass
Everything I read about the speed sensor says the same thing. I think crysler from 2007 to 2011 is having the same problem. The only problem I am having is that all I can find online and all Auto Zone can find is the back right sensor. Is that sensor interchangable on all four wheels or is there a sensor for each wheel and I just havent found it yet?

Alk5999 01-23-2015 01:07 AM

2012 Jeep Wrangler Sahara
I too am having the same problem with my 2012 Jeep Wrangler Sahara. However, the only difference is that my 4wd kicks in without me doing anything. Very scary when your driving and suddenly dash lights come on and it goes into 4wd. No one has any clue what the problem including the jeep dealership. I called jeep directly and they clam there is no problem. I told them I have not modified the jeep and only have 11,000 miles. Please is there anyone out there that can help solve this problem. My email is

bmorries 03-21-2015 10:27 AM

Alright gents, been lurking for years, thank you all for all of the posts and DIYs, so incredibly helpful. Finally have something to contribute here (I hope). Had a similar issue on a 2007 JGC. The ABS and traction control lights would come on, it would throttle the Gas and interrupt the Cruise Control. The ABS sensor wire runs down the upper control Arm. There is about a centimeter of clearance between the wire and the tire. For my issue the ABS Sensor wire had slacked about an inch and was wearing on the tire. Pulled it snug wrapped it up with Electrical Tape and problem is solved. Thanks again gents.

baconator2112 04-21-2015 09:32 AM

Which sensor did you end up replacing?

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