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Old 12-20-2012, 06:29 PM   #1
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Brake lights, turn signals, and hazards not working

I realized today that none of the above lights are working. Any advice how to fix it?

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Old 12-20-2012, 06:52 PM   #2
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The one thing all those lights have in common is the turn signal switch and steering column connector. I would make sure the connector is fully seated first. If your tail lights are working okay, that kind of eliminates grounds.

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Old 12-20-2012, 07:28 PM   #3
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I just took apart the steering column and everything looked alright to me. Anyone know where to go from here? From what I found it seems that replacing the turn signal stock might fix the problem but I don't really want to pay for that if I don't need it. Should I try the dealership?
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Old 12-20-2012, 07:30 PM   #4
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try it, but get one from a junk yard. a neon's switch should fit if you cant find a wrangler.
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Old 12-20-2012, 07:37 PM   #5
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Would it be worth picking through a junkyard for it? I found what seems to be a replacement at autozone for ~$50.
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Old 12-20-2012, 07:41 PM   #6
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most junkyards ive been to know right where there cars are. it depends on how broke you are. I personally try to save a buck wherever I can. maybe you've got more important things to do. hard to say.
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Old 12-20-2012, 07:47 PM   #7
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most junkyards ive been to know right where there cars are. it depends on how broke you are. I personally try to save a buck wherever I can. maybe you've got more important things to do. hard to say.
True but I was also just at the yards a week or two ago and there was nothing good out there. Especially because I need a switch from an 03-06 TJ.
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Old 12-20-2012, 09:11 PM   #8
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If you want to test the switch & have a volt/ohm meter there are detailed test procedures in the FSM. If you don't have one go to the link below. Pick TJ Unlimited to get the 2003-2006. Go the the LAMPS chapter & go down to about page 26 & follow from there.

If the center brake light is working but not the L & R as well as no turn/flashers it is almost for sure the switch.

See online read only FSMs here:
Jeep Knowledge Base
You may have to go to the bottom of the page & pick Jeep Resources & online manuals if it directs you to home page rather than the knowledge base.
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Old 12-20-2012, 10:16 PM   #9
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Did you check and replace you Blinker/Brake light Fluid yet ... Works for me every time



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Old 12-21-2012, 12:12 AM   #10
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Well the third brake light isn't working either. Does that mean anything else?
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Old 12-21-2012, 12:23 AM   #11
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check fuse
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Old 12-21-2012, 12:53 AM   #12
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Could be 2 different problems. Still need to check the switch but the center brake light does not go through that switch. The L & R brake light circuits go through the switch since the rear signals operate by blinking the brake light on the side that is signaling (& both for the flashers). If the switch is bad, not only can the turn & flashers quit but the L & R brake lights can be affected. Then the center might not be working because the bulb is bad or the 2 button contacts on the tailgate may not be making good contact or the brake light switch on the brake pedal could be bad (which will affect all 3). There are 3 different fuses involved so it is not likely all are bad but check them. Check fuse 2 (brake lights) & 13 (signals) in the block behind the glove box & fuse 27 (flashers) in the PDC in front of the battery.
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Old 12-21-2012, 06:24 AM   #13
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Could be 2 different problems. Still need to check the switch but the center brake light does not go through that switch. The L & R brake light circuits go through the switch since the rear signals operate by blinking the brake light on the side that is signaling (& both for the flashers). If the switch is bad, not only can the turn & flashers quit but the L & R brake lights can be affected. Then the center might not be working because the bulb is bad or the 2 button contacts on the tailgate may not be making good contact or the brake light switch on the brake pedal could be bad (which will affect all 3). There are 3 different fuses involved so it is not likely all are bad but check them. Check fuse 2 (brake lights) & 13 (signals) in the block behind the glove box & fuse 27 (flashers) in the PDC in front of the battery.
X2...but I believe the flashers are fuse #9 in the PDC. At the steering column you should have power on the black/white wires with the ignition off,and power to the black/gray wire with the ignition in the on position. If you determine that you do, then slide the hazard switch to on, and check the dark green/red and the brown/red for flashing power. If no power there, then replace the switch.
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Old 12-21-2012, 01:24 PM   #14
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WD, on your '99 it is fuse #9, on my '05 (& I'm pretty sure his '06) it is #27. Wire colors are different too.
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Old 12-21-2012, 01:49 PM   #15
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So I changed fuse 2 and 27 and got back the brake lights and hazards because the fuses were blown. I never did get back turn signals though. I then turned the car on to see if that would blow them and of course it did. Does that mean I need a new switch?
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Old 12-21-2012, 02:06 PM   #16
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So you replaced the 2 fuses & everything worked including all 4 lights when the flashers were on & all 3 brake lights. All this while the key was off. The turn signals not because the key was off. Right so far? Then you turned the key on & nothing worked & both fuses were blown again? Do you know if the fuses blew when you turned the key on or when you tried the signals?

Fuse 13 good the whole time?

Let me know that & I will look at the circuits again.
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Old 12-21-2012, 02:18 PM   #17
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I changed fuse 13 yesterday and it didn't work but there is a good chance it blew as well. It all worked with the key off and then I turned the key and tried everything. The hazards worked for a split second and then blew, the brakes blew right away, and the signals never worked. Thanks for the help!
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Old 12-21-2012, 02:42 PM   #18
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Do you have any wiring in the back for trailer lighting or anything else added at the rear?

For sure the hazards worked with the key off but not with the key on?
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Old 12-21-2012, 02:46 PM   #19
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Do you have any wiring in the back for trailer lighting or anything else added at the rear?

For sure the hazards worked with the key off but not with the key on?
Yes the hazards worked for sure. I do have some trailer wiring that hasn't been used in about 5 years. Does that have something to do with it?
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Old 12-21-2012, 03:11 PM   #20
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So I just went and checked out my trailer hookups and may have found something. I crushed the hookup when I put the back seat in yesterday which is when I noticed the problem. What can I do from here? It is a Uhaul trailer hookup that the PO installed/had installed so I don't really know about it at all.
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Old 12-21-2012, 03:26 PM   #21
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It might. I would disconnect it especially is there is any sign of damage or bad connections. There are numerous posts here & on other forums where added wiring caused problems. With that said, I don't really see where having the key on would cause a short in any of the wiring. The only place in the entire circuit that changes when the key is on is at the switch & combo flasher. It seems more likely to be in the flasher. Moving either the hazard switch or the turn signal lever could be causing a short somewhere there though. If you replace all bad fuses & only step on the brakes with the key off then on & no fuses blow & the 3 brake lights work that should eliminate any wiring problems (shorts), including in the trailer wiring. If that works it would seem to indicate the switch or flasher is bad.

The flasher plugs into the top of the of the switch & is not included with a new switch. There is really no way to test the flasher as far as I know. They are probably cheaper than a new switch so that might be the best thing to try first. If you get one from a local parts store see if you can return it & get the switch if the flasher doesn't fix the problem. Being electrical they may say no but at least ask.
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Old 12-21-2012, 03:33 PM   #22
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Sorry, I was typing when you posted. Definitely remove the bad section. Start by cutting the wires off a little before the damaged area & tape them off. See if that fixes it. Or you can follow the wires back to where they attach into the main harness & remove them there. Some kits are plugged into the harness. If yours is you will be able to unplug it in 2 places & reconnect the original connection.
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Old 12-21-2012, 03:33 PM   #23
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Sounds good to me, thanks again. Any idea where the trailer wiring is connected?
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Old 12-21-2012, 04:35 PM   #24
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Well I solved (partially) the issue. I went and got a new flasher and more fuses and swapped everything out. I have brake lights and turn signals. The only issue now is the hazards don't come on and I hear a rapid clicking sound from the flasher instead. I also cut my trailer hook up but I don't think that changed anything.
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Old 12-21-2012, 06:56 PM   #25
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Progress! Try working the flasher switch on & off several times. Sometimes from lack of use the contact get dirty & working it will clear it & it will start working. Also try moving the signal lever up & down with the flashers on & turning the parking lights on & off to see if you get any change or improvement.

Another thing is do both side marker lights flash when the signals are on for each side?

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