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Old 02-09-2011, 04:20 PM   #1
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4WD indicator light?

My 4WD indicator light recently stopped working on my 2005 jeep wrangler. The four wheel drive still engages and works properly i just dont have an indicator light anymore. I've checked the obvious fuses and couldnt see any problems. Anyone have any suggestions?

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Old 02-09-2011, 04:21 PM   #2
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ive never had one in mine.. so im gonna sub and check some stuff out. im not even sure if there is supposed to be one in mine :P

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Old 02-09-2011, 08:22 PM   #3
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Ive seen on another forum that this is a somewhat common problem. I can't remember but I think there is a sensor on one side of the transfer case. (Can't remember which side) I looked at it last year because mine doesn't work either, I never got around to fixing it and it has been a year since I researched it so sorry I can't be more specific.
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Old 02-10-2011, 11:45 AM   #4
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Yea thats what I heard it could be as well. Im going to change my cat convert. so ill check it when i have it up on the lift. Thanks
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Old 02-10-2011, 11:50 AM   #5
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Yup. Your switch bit the farm. Al least it failed off, some of them fail with the light on.
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Old 02-10-2011, 02:27 PM   #6
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the switch is about $20. on my 98 tj, it is on the driver side on top of tcase. a bit hard to get to it.
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Old 02-10-2011, 02:36 PM   #7
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It might just be the connector, disconnect it, check for corrosion on both ends, apply die-electric silicone compound and reconnect it.
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Old 02-10-2011, 03:08 PM   #8
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Mine stopped a long time ago and I am glad.
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Old 02-10-2011, 03:24 PM   #9
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mine wasnt working for 2 years, one day i was bored so i decided to fix it..
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Old 04-04-2011, 06:52 PM   #10
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Ummmm Bulb??
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Old 04-04-2011, 07:06 PM   #11
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mine is out to, so let us know if you get it fixd and what it was
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Old 04-04-2011, 07:53 PM   #12
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Mine is out as well. I know my 4H and 4L work though. I will crawl under there and try to clean the connection. Now if I can only identify the transfer case, and the connector. I will photograph what ever I can when I get down there.
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Old 05-15-2011, 02:27 PM   #13
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If I unscrew the connection in the transfer case what do I do then How would I replace it if I wanted to?
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Old 05-15-2011, 09:53 PM   #14
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I am having the same problem with mine right now! On my transfer case there is a switch that has 5 prongs coming out of it and then for the end thats supposed to go into it there are 2 male prongs coming out! that obviously wont work so i am trying to see if i can replace my switch in the t-case itself.

To first diagnose if its the bulb or the switch u can obviously pull apart your dash and check the bulb or just crawl under there and unplug the switch and complete the circuit with a paper clip or a thin piece of metal like that and go see if your 4wd light comes on. if it does then pull out the switch thats in the t-case and there is probably a ball on the end of it see if its stuck you can get some wd-40 or pb blaster and spray on it and work it for a few minutes while your doing that check the connections and make sure they arent corroded at all, if it doesnt work still order a new one from quadratec ... this is the one for 97-00 Original Replacement Parts 8134473 - 4WD Switch for 97-00 Jeep® Wrangler TJ with Model NP 231 Transfer Case - Quadratec
you mihgt have to do some research to see what your 05 needs it may be a totally different set up all together and i could be totally wrong!! .. if you would do me one favor to take a few pictures of your switch on your t-case so i can compare i would be very thankful!
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Old 05-15-2011, 10:11 PM   #15
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I only have a 10mm socket at my disposal right now (my tools are elsewhere) if that does it I'll pull it tomorrow, if not I will have to wait. I will send pics though.
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Old 05-16-2011, 09:39 AM   #16
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on my 98 i droped the transmition, it gave me more room to remove the switch, i tried to clean it before putting the new one in but no luck. to unscrew the switch i used a cheapo spark plug socket (the one thats open on both end with 2 different size for different spark plug, where you put a screw driver in a hole on the side on the socket) .
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Old 05-16-2011, 11:39 AM   #17
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Assuming your 4wd works properly....First check the bulb to see if it is burned out. If the light still does not come on, unplug the switch located on your transfer case (it is a bit tricky to get to but not impossible) and jump the circuit to see if the light comes on. If it comes on you know your bulb & wiring are OK and the switch in the transfer case is bad. You will need a deep well socket to unscrew the switch and install the new one. Don't forget to install a new (not reused) rubber o ring on the switch as well. The parts should run you about $20.00. Good luck.
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Old 03-15-2012, 02:58 PM   #18
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What if jumping the switch on the transfer case does not turn on the light. I have run the dash light startup so I know that the bulb functions fine. Where should I look for the problem in the wiring? Is there a fuse somewhere that could be the cause? Someone with the electrical background please advise
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Old 01-08-2013, 04:20 PM   #19
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4WD dash indicator light

Ok...I just got my 4wd dash indicator light on my '97 wrangler to work and here is what i recommend to try to determine if it is the bulb, connection or the switch itself.

Climb under jeep and locate the switch on the top right side of transfer case(looking toward rear axle of jeep). Remove the plug by unlatching the clip on the plug and pull up and out of switch. before you climb under the jeep be sure to have a standard(uncoated)paper clip well within reach. Once the plug is out of the top of the switch, take the paper clip, open it up that you have it bent into the shape of a 'U" and insert the two ends into the plug being sure your making a connection to the two pins in the plug itself(jumping the plug). Now check to see if your 4wd light on your dash is lit by turning your key to the ON position. If the light is lit...it's your switch and you'll need to replace it which you can pick up here Original Replacement Parts J8134473 - 4WD Electrical Switch for 91-02 Jeep® Wrangler YJ, Wrangler TJ, Cherokee XJ, Grand Cherokee ZJ & Liberty KJ with Model NP231 Transfer Case - Quadratec. Be sure to get the "O"ring for the switch when you order the switch, quadratec also sells them. It took all of about 30 mins. total to change out the switch and all i used was a standard 7/8 deep well socket on a 3/8" drive ratchet...I didn't have to drop the the skid plate or anything. I had just enough room to fit my arm and socket onto the switch. The reason i'm posting this is because i started the process completely the wrong way. First i pulled out the instrument cluster and replaced the bulb(bulb wasn't blown but i replaced it anyway)...I then tried replacing the headlamp switch thinking that was the problem(it wasn't). it was only then that i did the paper clip test in the plug that i found my problem. I could have saved myself a few hours and a lot of time if i had just checked the switch itself first but it's like they say "You learn from experience" so i thought i'd share my experience with you in hopes to make YOUR job a lil easier. Good Luck

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