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Old 10-17-2012, 05:58 PM
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Join Date: Oct 2012
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Locker Problems Rubicon

HI Folks,
I'm a newbie, but an old gezzer. I have locker problems on my 04 Rubicon. I have put lots of new parts on it including, transfer switch, actuator motors and a new computer. The lights come on, on the dash and flash. The front locker will lock in but light still flashes. The back locker is leaking air at the locker actuator. I tried plugging it of but still have flashing lights on dash. Matter of fact, after I shut off the locker switch, the rear locker keeps flashing until I take it out of 4 wheel.
I sure hope someone has experienced something kind of like this so they could help. Noone around here knows what to tell me. Thanks

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Old 10-17-2012, 08:38 PM   #2
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Two things that come to mind after reading your post. First off, are you 100% positive your front locker is locking? You said it locks, yet the light still flashes? The other thing is, whenever I'm trying to lock up, sometimes I have to roll slowly and then they finally lock. Have you tried that?

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Old 10-17-2012, 08:49 PM   #3
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I’m not sure I understand all your terminology. The transfer switch is the transfer case switch? The actuator motors are the pumps? Where is the rear leaking air? At the dif.?

The flashing front is either a bad locker indicator switch on the front dif or an open wire between it & cluster or ground. When the locker locks into place that switch is to close & ground the wire to the cluster to stop the indicator from flashing. You should be able to jump across the 2 wires at the switch to get the light to stop flashing. If that works the switch is bad. If not then ground the non black wire directly to ground to find out if the black wire is open to ground or the other one is open to the cluster.

The rear is a little more complicated. The leak might have something to do with it but I’m not sure. With it plugged off will the pump stop pumping or is it running continuously? When you turn the switch off (& the rear keeps flashing), does the orange indicator light in the switch go off?

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Old 12-03-2012, 10:54 AM   #4
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lockers inop

have a 04 rubicon lockers are inop use to work fine was really working them hard one day off-roading and went to use them again and no indicator light or locker lights would work replace relays under hood looked for fuses couldnt find one for lockers pretty sure it is electrical any suggestions
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Old 12-03-2012, 12:45 PM   #5
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Fuse 24 in the PDC powers the locker relays.

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'93 Toyota 4Runner
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Old 02-09-2013, 08:19 PM   #6
Join Date: Feb 2013
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'06 Rubicon locker problems

When I press the locker switch, the "FRONT LOCK", AND "REAR LOCK", indicator lights flash constantly. While driving in snow, it's obvious that the lockers are not engaged. I've driven a couple of miles with the lights flashing. Anybody have any experience with this problem?
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Old 02-09-2013, 08:26 PM   #7
Knows a couple things...

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Do your compressors run continuously? If so, the first thing I'd do is see if the air lines are connected & air tight. Compressors running conetinuously indicates an air leak because the compressors have an internal switch that shuts them off once the correct 4-5 psi air pressure is achieved.

You can isolate an air leak by putting your finger over the end of the hose after pulling it off the hose fitting at the top of the axle. It is only 4-5 psi so you can easily block it with your finger. If putting your finger over the hose with the pump running shuts the compressor off, that means there is an air leak inside the axle, possibly the locker's air bladder itself as happened to me.

If the compressor doesn't shut off by pinching/blocking the end of the air hose, there is a leak in the air line or inside the compressor itself.

This isn't to guarantee your lack of lockers is caused by an air leak but air leaks are common sources of this type of problem.

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