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  #49  
Old 10-01-2012, 08:41 AM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

Replaced the ignition control switch with an aftermarket unit from Rockauto.com ($19 shipped), and so far no more light show.

My Jeep was having the issue following issue: at random, and with increasing frequency, the dashboard lights would all go on, and the HVAC blower would shut off for a few seconds, after which it would return to normal...whole process would take about 5 seconds or so.
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  #50  
Old 10-03-2012, 01:52 PM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

I have an 06 gc with the 4.7l motor. Had the problem with flickering dash lights for several years. A web search found that lots of owners are having same problem. Also had "Service 4WD System" message on constantly. Local dealers were useless.
Went to a local shop for a PCM reflash in April. "Service 4WD System" message went off and hasn't come back but after a week and a half dash light flickering started again. Shop was stumped.
I installed a new ignition switch myself but NOT THE DEALER PART!! I figured if Chrysler hadn't solved the problem yet then their replacement part must not work right either. I bought a BorgWorner switch at AAP and installed it May 6th. Its now October 3rd and so far the dash lights have not come on once. So far so good. Hope this helps someone.
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  #51  
Old 10-06-2012, 01:41 PM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

Quote:
Originally Posted by attilahooper View Post
It is called the ignition switch ~$44 retail, $<$20 rockauto. Not the ign cylinder assembly. I got MBW parts at pepboys. Had a little chrysler logo cast into the plastic, heh. Anyway, it's done now. Wiggling the key does not commence fireworks, so I'm calling it 'good'.

Be prepared to have the smallest of torx bits, a phillips driver and a butter knife.

1. Drop the panel under the column, it pops down from the top.
2. Remove ign key bezel, butter knife or equivalent from the bottom.
3. Remove cluster shroud, pops from bottom and top kinda.

4. Remove 3 torx screws from lock cylinder. Two on ign bezel, one from top, in front of cluster
5. Do the missionary on the drivers floorpan and finagle the lock cylindre till you can manipulate red release tab of the electrical connector. Pull that shit out and dont loose it. M-kay ?
6. Smallest torx screw mounts ign switch to cylinder, remove it. It is small so be keen.
7. Two tabs at the base hold ign switch to cylinder. Compress them with a needle nose and pull switch off.
8. Make note of clocking position of the switch. It is rectangular. I had to turn back about 90 degress to match the position of the removed switch.

Assembly is vice versa.
I've done this several times, and each time the "new" ignition switch does not work at all! I finally called the dealer about the issue, and they told me that only they can reprogram the ignition switch to the chips in your keys, and it costs $65 dollars per key. Not to mention they won't allow me to install my own ignition switch part at their site, so they want another $120 dollars to install their own ignition switch.
How can I program the ignition switch to the key's with out being robbed by the dealer? Is there something everyone else knows that I don't? lol
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Old 10-13-2012, 01:01 PM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

I have a 2006 Grand Cherokee Laredo that has had the sporadic flickering
of the dash panel for a good year. It happens randomly, hasn't happened all summer, but now it is getting colder & it has started up again - more often on damp rainy days, but also occaissionally on dry days too. The gauges all drop & lighting goes off then flashes back on with all the indicator lights flashing on & off - just goes nuts. The radio contiues to play & navigation screen is fine, but surrounding radio function lights go out. Only other indicator that stays on is gear selection on dash. At night I see some flashing of the front lights, but never totally go out - so I suspect the fog lights are the ones flashing, as I always have them on with the headlights. This will go on for 10 - 15 minutes then return to normal. In addition, also about a year ago when I hit the ignition it would do nothing, totally dead. I would shut it off & try again & it would be fine, totally normal. The dealer replaced the starter, which did the trick for a while, but started acting up again, though less frequently. The dealer
was reluctant to attempt the dah, as it was so intermitten.
Again, both the dash & ignition worked perfectly for at least the entire summer, but the drop in temperture has effected both issues. Maybe the car is haunted or possessed. Any thoughts are greatly appreciated.

Jim
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  #53  
Old 10-14-2012, 06:38 AM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

For me the solution was replacing both major wiring harnesses. This after the dealer had me go through 5 modules. It was the harness all along and has run better than new ever since. See my earlier posts.

Cheers,
Architect

2006 GCL
now with 123k
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  #54  
Old 11-01-2012, 08:38 AM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

Quote:
Originally Posted by Architect View Post
For me the solution was replacing both major wiring harnesses. This after the dealer had me go through 5 modules. It was the harness all along and has run better than new ever since. See my earlier posts.

Cheers,
Architect

2006 GCL
now with 123k

I am dealing with this same issue with my sons 05 Grand Cherokee Laredo. I'm amazed at the number of internet hits I found with a search. Looks like a serious issue with something in the Jeep wiring system to me.

I have read the full thread, and several have said that they have "fixed" their issue by replacing various parts. But understandably know one comes back to report that the issue truly is fixed after some time has passed. So I ask are you confident at this point that the issue has been resolved? How long has it been since you have had the trouble fixed?

I am just starting on my journey with this and would like to actually fix it to begin with rather than throwing parts at it until it either goes away or the car is sold. Not faulting any one here for the help they have given, it is all appreciated, but I have been down the road before where I just start changing parts. Rarely do I get lucky fixing things that way.

The wire harness is the most extreme of the fixes that I have read about. But if there actually is an issue with the harness, I can "see" how it could cause the issue and make it so hard to diagnose.

One thing I have not read any one suggest is the onboard computer CAN system. It seems to me that there could be an issue with any one of several systems that could cause this problem. Which could lead to replacing good parts of different points of the system.


As an aside I have just received the set of factory service manuals to help with this repair. I will say that they don't look like they will be much help to me. They are obviously written for a Jeep Tech, not a guy in his shop. There is limited information that is useful to a guy without a scanner. And they don't even say what type of scanner you need.

So any suggestions on a scanner that I can use with the Jeep system that will be useful with the FSM?

Sorry a little long winded, I hope someone takes the time to read this.

Ron
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  #55  
Old 11-04-2012, 08:27 PM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

RonRock,

See my post from Oct 3rd. I also searched the web for answers and found the ignition switch was often the problem.

I changed the ignition switch (not the ignition lock with the key, just the switch). The switch attaches to and gets connected to the ign lock with a couple of small screws and an electrical connector as best I can remember. It was a cheap and easy gamble: $50 at AAP and 1/2 hour of my time. I changed it on May 6th/approx 6-7000 miles ago. Its now Nov 4th and not a single recurrance since. Hope this helps.

Good luck.
fcdd25
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Old 11-05-2012, 07:04 AM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

Thank you for the reply. You are one of the few that have said that the fix actually has worked for some time. I think I will go ahead and replace the ignition switch as well. It seems like a good place to start. And also seems most likely to be causing the issue. I'll report back on my results.

Ron
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Old 11-15-2012, 08:02 PM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

Quote:
Originally Posted by asuricat View Post
I am having the same problem with my 05 WK. Hopefully my dealer will come to the party regarding the cost of the harness
Mens,

The blinking dash lights and headlights, AC cutting out, etc. is caused by a bad ignition switch. $50 and 45 miniutes of struggle under the dash and its fixed. I had the same problem on my '05 Grand Cherokee.
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Old 11-18-2012, 12:12 PM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

I don't know if the recent experience we had with my wife's 2008 GC Overland is related to the problem here. My wife got into the Jeep to go to work one morning and when she turned on the keyfob the dash stayed blank and the starter wouldn't work. You could start the Jeep with the remote start at first(even that stopped working). I replaced the battery in the keyfob and that didn't help. The spare keyfob didn't work either. The last time she tried the dash lit up with a message saying unathorized key for the Jeep and the lights started blinking on and off as the horn went off in theft mode(she couldn't turn anything off and it went off by itself). We towed the Jeep to the dealer and they replaced the WIN module(ignition switch module) for $375. We had an extended warranty so the $100 deductible saved our wallet $275. I don't know if the WIN(ignition module) is an ongoing problem contributing to the posted problem. I see that the ignition module was replaced twice in the one post to no avail.
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Old 01-06-2013, 11:45 AM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

Hi Y'all,
Just wanted to give an update on the flashing dash lights problem a lot of us seem to have. See my posts from Oct 3 and Nov 4.
It's now 8 months and 11,500 miles later and still not one recurrance of the problem after changing the ignition switch back on May 6th. Enough time has passed that I'm confident that the problem is fixed.
Now if I can just find out how to fix the "Transmission Over Temp" glitch...
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Old 01-06-2013, 12:09 PM
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Re: 06 Grand Cherokee - Electrical Problem wih Dash Cluster

An aftermkt ignition switch fixed my crazy cluster as well. Been 6 months and so many miles. During investigation I had found that I could cause the problem by wiggling the key in the ignition.
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