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Old 03-31-2014, 08:14 PM   #1
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Rubicon lockers not disengaging

I've read the threads about this but still
Not really telling me what the cause is or the
Fix. Am I just missing something ?
My rear locker would not disengage today.
I tried every trick in the book. Ended up removing the dif plug and sliding the locker to the right
To disengage.
Any help or if you can point me to a thread that has some answers I'd appreciate it.
I have a 2014 jku rubicon

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Old 03-31-2014, 11:58 PM   #2
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If it's a '14, it should still be under warranty. Sounds like a defect and should be fixed for free.

How large are your wheels and how often have you used the locker? With 37's or larger, the lockers will wear out quicker, but shouldn't be less than a year.

Please post an update if they fix it for you.

There are no serviceable parts for the locker. When they wear out, the whole thing has to be replaced. Doubt yours is worn out though.

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Old 04-01-2014, 07:05 PM   #3
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Took our 2013 2dr rubi to Colorado last fall and had the same issue after one trail. Used the locker in one spot, straight run on slippery rocks ... and wasn't hammering it. After lots of suggested tricks, learned it was a broken spring and disengaged it the way you did. The dealer out there gave me two choices, keep disengaging it manually for the remainder of my trip or replace it. Had it replaced under warranty. Dealer was cool about me being out of town and helping me get back on the road/trails and was only down 2 days. Never had another issue on any of the trails for the remainder of the trip and we used the lockers quite a bit.

Right, wrong or indifferent, I've been told the spring is constantly pulling to keep it disengaged, however slight the pressure may be. When you activate them, it's current to a magnet that over rides the spring and engages the locker. Hit the switch to deactivate, the magnet is cut and the spring pulls back disengaging it. Broke spring equals stuck locker unless you monkey with it manually.
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Old 04-01-2014, 07:46 PM   #4
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Try higher RPM's. These Rubicons have to be Exercised in 4Lo. I do mine at least once a month.
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Old 05-12-2014, 09:09 AM   #5
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Well it happened again. Once in Moab at Easter jeep safari. I had to manually disengage through the gill plug hole again. Used it several more times and it did fine. Then it happened again Saturday. Used it off and on all day then as I'm climbing 1 last hill leaving the trail it would not unlock. Could not manually disengage this time because I changed my diff covers to ARB's. Had to drive
2 hrs home locked. Just dropped it off at the jeep dealer.
I'm running 35" tires.
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Old 05-12-2014, 09:17 AM   #6
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This is beginning to sound like reason for a TSB from Jeep.
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Old 05-12-2014, 05:52 PM   #7
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Mine took a long time to disengage everytime we've used it since New Years. At the Big Bear Jeep Jamboree this weekend it didn't disengage after the first day of trail riding until after it sat for an hour or so while we ate dinner. After day 2 it was completely stuck. Had to drive 2 hours home with it on (PITA). Dropped it off at the dealer today to get it sorted. I'll try to keep you updated with what they do to fix it.
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Old 05-12-2014, 05:56 PM   #8
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Quote:
Originally Posted by sk8convict View Post
. Had to drive
2 hrs home locked..
How fast? That cant be good on the locker.
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Old 05-13-2014, 05:46 PM   #9
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They said they ordered a new locker sensor.
I doubt that's it but we'll see.
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Old 05-13-2014, 06:18 PM   #10
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I really don't see how the sensor can be the problem. From everything I can find online the sensor just tells the light to turn on or off. ??
Anyone have any experience with this?
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Old 05-13-2014, 07:41 PM   #11
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Quote:
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I really don't see how the sensor can be the problem. From everything I can find online the sensor just tells the light to turn on or off. ?? Anyone have any experience with this?
If the sensor is sticking, it can hold the locker in the engaged position. Just the way it is built!
PS. I took the sensors out of mine. I don't need them to know whether my axle is locked or not.
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Old 05-13-2014, 08:35 PM   #12
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Damn, I thought I was the only one with this issue. My rear locker would do the same thing. I get nervous about engaging it now because I do not know if it disengage or not... It's a real crapshoot, the odds are against me. For everybody that experiences this issue does your rear locker indicator light just keep flashing when you attempt to disengage the locker? I ask because mine does. It keeps flashing, and the locker doesn't release.

In order to get the rear locker to disengage, I have had to hit the button, and run the trail with the locker trying to disengage (rear locker indicator light flashing), and eventually I either hit the right wheel speed, or roll over the right obstacle to get the damned thing to let go. Not cool at all.

I am going to have the rear diff. replaced, this is completely unsatisfactory.

I have a '13 10A two door 6spd., for those keeping track of afflicted model year and Rubicon variant.
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Old 05-13-2014, 09:06 PM   #13
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Espada,

I'm having a similar problem with mine. I have not locked mine in more than a couple of times, but I noticed that when I tried to unlock the light would flash. The way I would get it to go out was to shut the engine off. When I restarted all was fine. I'm driving a 2014 Rubi Unlimited with only 2800 miles on her......
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Old 05-13-2014, 09:23 PM   #14
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Yeah. Light just flashes and it doesn't unlock.
First time it happened with about 6k then again at 8k now at 10k.
It's a 2014 rubicon with a 4.5" lift 35's.
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Old 05-13-2014, 10:09 PM   #15
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Hmm. I wonder if overriding the Rubi locker switch and connecting to an aftermarket switch would fix this problem. I have a Rubi D44 front on my Sport. It's wired with a simple 12v switch.
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Old 05-13-2014, 10:49 PM   #16
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I thought someone had told me the lockers are made by Eaton...which makes me nervous because that's what I just installed.
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Old 05-13-2014, 10:58 PM   #17
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Quote:
Originally Posted by suicideking View Post
If it's a '14, it should still be under warranty. Sounds like a defect and should be fixed for free. How large are your wheels and how often have you used the locker? With 37's or larger, the lockers will wear out quicker, but shouldn't be less than a year. Please post an update if they fix it for you. There are no serviceable parts for the locker. When they wear out, the whole thing has to be replaced. Doubt yours is worn out though.
I'm still 100% stock?
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Old 05-13-2014, 11:11 PM   #18
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Quote:
Originally Posted by gorillahydrographics View Post
I thought someone had told me the lockers are made by Eaton...which makes me nervous because that's what I just installed.
I believe so

There's a plunger inside that diff that sticks. This will cause issues with locker engagement.
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Old 05-14-2014, 01:52 AM   #19
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I have a 12 JKUR. My rear locker started to do the same thing. The dealer got it stuck and could not disengage it. They ended up replacing it. A little while later my TPM (fuse box) went bad. I now wonder if that could have been part of the problem with the locker-I had all kinds of weird stuff going on when it started to fail.
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Old 05-14-2014, 01:02 PM   #20
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Talked to the dealership today. They actually ordered the locker solenoid and the sensor. Had to order the whole carrier because the parts do not come seperately. Should be done by Friday.
It's all covered under warranty. Surprised me with all the mods. I have ARB covers on there as well and one quik glance at the armor under the jeep will tell them I've been wheeling the crap out of it.
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Old 05-15-2014, 03:08 PM   #21
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Picked her up from the dealer yesterday. They had remove the existing diff carrier and bearings, installed all new parts, and relube. Since it sounds like the carrier is not serviceable, I'm assuming they just swapped my existing ring gear onto a new diff. That would have been a pricey repair if I had to pay for it myself! Let's hope it doesn't happen again.
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Old 05-15-2014, 03:14 PM   #22
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I had the same problem when the JK was new. But, since then no problems.
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Old 05-23-2014, 04:26 PM   #23
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Well they've had 2 weeks now. Finally got around to replacing the whole carrier. According them
It locked right up too. They called and were told "yeah, sometimes it takes 3-4 different carrier replacements to fix it" WTF???
So now another 3-5 days for the parts to come in, again, and it still might not work.
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Old 05-28-2014, 04:57 PM   #24
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2nd new carrier and it still doesn't work.
Does anyone have a number to a service tech anywhere in the world that knows what the hell they are doing? Please? The first tech passed it on to another tech and he seems clueless as well.
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Old 05-28-2014, 08:13 PM   #25
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This scares me as we are heading to Ouray in a month with the new rubi. Last thing I want is trouble 1000 miles from home.
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Old 05-29-2014, 05:52 AM   #26
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If whoever is installing your carrier doesn't know that you have to gag the sensor plunger in the 'engaged' position when installing the carrier, the locker sensor can hang up the carrier from disengaging.

If you remove your cover, you can see the plugger behind the carrier, right side. The mushroom head should be on the _inboard_ side of the locker actuator, not the outboard side.
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Old 05-30-2014, 03:05 PM   #27
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Quote:
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If whoever is installing your carrier doesn't know that you have to gag the sensor plunger in the 'engaged' position when installing the carrier, the locker sensor can hang up the carrier from disengaging.

If you remove your cover, you can see the plugger behind the carrier, right side. The mushroom head should be on the _inboard_ side of the locker actuator, not the outboard side.
Interesting, I had my gears changed when it was new. They ordered it with 3.73 instead of 4.10-maybe they did something wrong?

Although, I still wonder if my TPM(fuse/relay box) failure may have been my problem as it caused all kinds of electrical problems later on, including issues with lockers and e-disconnects not engaging/disengaging properly.

  • I guess the question to ask is, how many of you had prior differential work done for some reason before the locker failure occurred?
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Old 06-04-2014, 03:36 PM   #28
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Well they say they've fixed it. 3rd carrier and he took my advice on installing it correctly with the sensor gagged etc. I haven't tried it out yet but they assured me they test drove it and it worked.
I'll give it a go this weekend and report back. They never said what the original problem was
Just started replacing the carrier and sensor from the start.
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Old 06-08-2014, 02:11 PM   #29
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Add me to the list of people having issues getting the rear lockers disengaged. This is on a stock 2013 Unlimited.

I drove about 10 miles yesterday unfortunately at highway speeds as I couldn't get it unlocked. I tried putting it in and out of 4lo and back and forth from my driveway and in the street in front of my house. I head out of town tomorrow morning for a business trip and won't be back until Thursday night. I hate leaving my Jeep in the driveway in its present condition.

Any videos anywhere how I can try to manually disengage it so my wife has a fully functional vehicle while I"m out of town?
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Old 06-10-2014, 11:08 AM   #30
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