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Old 11-19-2013, 05:02 PM   #1
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Flashing Rubicon locker lights

I have been through the forum search here and JF and I have found some help but I am looking for a map to follow to trouble shoot this. There are a ton of threads about lockers so I hope this is not a repeat.

2005 Rubicon 4.0 45k miles

My Rubicon locker lights do not stop flashing when lockers lock. The lockers are engaging and the pump runs for a short period and shuts off. I have not heard it cycle multiple times. All of the wires and air tubing appears to be intact. Sometimes the lights will keep flashing after the lockers disengage, and once it continued to flash after I turned the jeep off. I feel like it is switch or sensor related but I want to start in the most logical place and work my way through all of it so I can get it fixed correctly. This is front and rear lights.

It started at Jeeptoberfest when the pumps would not come on, I checked fuses and wound up tapping on the pumps while activating the switches and they came on, pumped up for a few seconds and lights went solid. The lockers were engaged and and I did several tests to make sure they would go on and off while waiting in line. After locking them to get over an obstacle they started flashing but were still locked. I could not turn much at all so I know they were locked. I tried unlocking them and they still flashed and did not unlock. After I got off the course on flat ground I finally got them to unlock and the light flashed then finally quit. I tried locking them again and light flashes, pump runs, quits and the lockers are engaged. Try disengaging and the lockers disengage but the lights keep flashing then finally stop. After getting home I test them again all works as it is supposed to except lights keep flashing, including after I turn the jeep off.

I have no issues shifting from 4 hi to 4 lo and the 4wd light activates properly, no other gauges are acting strange, not other electrical issues.

It is time to service the diffs, transfer case, and transmission so I want to do all of this while I am in everything anyway. I am pretty good at tracing wiring but get a little confused when it gets technical on voltage readings for diagnosis but I have someone who can help if I need it. I have a service manual to help guide me along. I appreciate any help.

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Old 11-22-2013, 05:39 PM   #2
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Bump.


Anybody?

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Old 10-25-2014, 10:53 AM   #3
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My front locker indicator light occasionally flashes while driving on pavement in 2hi. Often when I am braking for a stop light. I am also wondering about the cause. Lockers seem to be operating properly otherwise.
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Old 10-25-2014, 10:58 AM   #4
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First of all, I never engage lockers on Asphalt. It's either deep snow or mud before the lockers are even considered. Lockers on asphalt are a good way to tear things in your Jeep up.

If I engage/disengage lockers, the lights flash. I just put it in Neutral and roll it about 5 feet. It should go off then. Have you tried to roll it a couple of feet in Neutral?
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Old 10-25-2014, 11:09 AM   #5
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Unless someone messed with the wiring you cannot activate the axle locks unless you are in 4 low
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Old 10-25-2014, 01:26 PM   #6
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Switch in the differential may be messed up. When I replaced my axle seals I didn't know the switch has to be installed first before the differential. Ended up screwing up the switch. Now my front axle lock light flashes when I'm using it too. But to replace the switch I have to pull both axles and the differential.
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Old 10-25-2014, 02:00 PM   #7
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Quote:
Originally Posted by Digger84 View Post
Unless someone messed with the wiring you cannot activate the axle locks unless you are in 4 low
I wouldn't call that messing with the wiring, I call it fixing a factory mistake
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Old 10-25-2014, 06:28 PM   #8
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Yes, I'm quite aware the lockers can and should only be activated when in 4 lo and off-pavement. But this happens without touching the locker button at all, randomly, while driving in 2hi. That is why it seems odd to me. Perhaps the answer to the question is the same answer to the OP questions. It's why I asked. A bad sensor, as chevymad mentions above, is a possible cause. Is it common for that sensor to go bad without anyone ever even taking the cover off the diff? I don't believe the PO ever did that, and I will be doing it soon to change out diff lube. Would like very much to avoid pulling axles and the diff if I can solve it without all that.
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Old 10-25-2014, 06:42 PM   #9
Knows a couple things...

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Quote:
Originally Posted by racefan88 View Post
I wouldn't call that messing with the wiring, I call it fixing a factory mistake
Try to find any factory installed locker like from Jeep, Nissan, Toyota, etc. that allow the locker to be engaged when in any gear but 4Lo. Not everyone knows exactly what that little locker button does or when it is supposed to be used. Not many 4x4 owners wouldn't try engaging their lockers on an ice covered highway if the system let them... and only some of us know what doing that could cause.
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Old 10-26-2014, 03:03 PM   #10
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Originally Posted by Jerry Bransford View Post
Try to find any factory installed locker like from Jeep, Nissan, Toyota, etc. that allow the locker to be engaged when in any gear but 4Lo. Not everyone knows exactly what that little locker button does or when it is supposed to be used. Not many 4x4 owners wouldn't try engaging their lockers on an ice covered highway if the system let them... and only some of us know what doing that could cause.
Thats trueJjerry I forgot that common sense has become a super power
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Old 01-04-2015, 11:24 PM   #11
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I know this is old now but I found my issue. It is a faulty ignition switch. I found it whle out on the trail and the lights were flashing and I knew they were locked. I realized they stopped flashing when I reached to turn off the ignition and they stopped flashing. When I let go I got a beep and the lights started flashing again. After holding it in place with a rubber band it stopped the flashing. I have already done some work on it before so I guess the next step will be to replace the whole switch. Hope this helps someone else down the road.
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Old 01-05-2015, 05:56 AM   #12
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FYI ignition switch replacement is a simple task. If you go to the dealer they tell you they can only sell you a complete steering column(at least mine did). I ordered the switch off of Amazon and found a you tube video for install. Mine had gotten so bad it was leading to a no start condition

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