Last post on Nov 07, 2013 at 9:41 PM
You are in the Jeep Cherokee and Jeep Grand Cherokee
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Jeep Grand Cherokee, Electrical, SUV
#386 of 735 Interior lights stay on.
Sep 13, 2010 (4:51 pm)
1999 jeep grand cherokee laredo 6 cyl. This just started, when i turn off key, remove key, open door, interior lights turn on as they should, but when i leave vehicle and shut door, interior lights don't dim and go dark after a short while as they used to, remain on. Also if i exit vehicle and click the remote to lock, doors do lock and parking lights flash as i programmed, but the interior lights do not turn off and the red alarm set light on dash does not come on and start flashing. Luckily i can set interior lights to not light on door open by putting dash dimmer on stalk to the complete off position, so i am ok for now, but i would like to get the alarm to set and the interior lights to work as they should, any suggestions as to what and where controls this?
#388 of 735 2005 grand cherokee limited- intermittent cluster/ac/lights failure
Sep 10, 2010 (7:45 am)
1 wk ago: put key in ignition, turned on. All warning lights on dash started flashing wildly and beeping. Car turned on fine. Was left with engine light on and airbag light on. During drive home, AC stopped working, all gauges/displays went to zero, u-connect bluetooth stopped working, no signals, no brake lights (found out later). Windows and radio continued to work. Never lost power steering or brakes. Car started with no problems at home.. but all failures still the same. Battery load tested at parts store- fine. Advised to replace alternator- did that (although did not test old one). Car ran fine over weekend- drove over 500miles on a trip. NO PROBLEMS. Assumed problem was alternator. Drove car to work tuesday. No problems for most of the drive. When almost to work, was talking on the phone via the UConnect device, and it started switching back and forth from radio to phone conversation by itself. Started car at lunch, there was NO A/C, gauges at zero, uconnect does not work, no signals/brake lights. Took car home carefully. Advised by dealer to clean 2 grounds nearest battery on firewall, pulled out relays and most of fuses- all looked good. Still all gauges at zero, A/c not working (while car running, while doing the above). Then, started it up a few minutes after, and everything ok, except engine light on. Took to dealer who read the following codes, but could not reproduce the faults. Dealer states: "Unable to duplicate customer concern at inspection. Diagnosis found multi fault codes present for communication failures- 2 relevant: B212D (ignition run only input circuit open) and B2100 (ignition run/start input circuit low). Found several tech bulletins that apply to concern - suspect possible intermittent failure of either ignition switch and/or junction block (under dash, driver side). Also recommend u-connect module replacement as it is intermittent/irratic." I paid for the diagnosis and took car home. Unhooked battery, clearing engine light (resetting computer), and U-connect works perfectly (as it has for the entire time before these electronic issues, and as I told them it would if they reset computer). Car is acting fine- u-connect great, but worried about commuting with signal/light failures occuring. The only difference that occurred was that the two times before the failure, a short commute of ~25 miles was done in a very hilly area with lots of back and forth steering/downshifting into second. Also a different key used than with the ~500 mile trip two days before. Thinking of switching out the ignition switch, since problem happened initially with ignition, and "cured" problem with ignition yesterday. I do NOT believe the u-connect module is defective at all. I am not trusting the dealer at present, with a quote approching $1500. Opinions???
#389 of 735 2005 JGC Electrical problems
Sep 15, 2010 (1:59 pm)
I have read as many emails as my work time will allow. I have had this problem of and on for years and the dealerships have not fixed it. My entire console lights up, with a clicking noise, and then turns off. Every warning symbol lights up and then the whole thing goes blank. This continues for miles. All the gauges go crazy, the speedometer goes down to zero, my headlights click on/off. I took the car to a mechanic who said to go back to the dealership. Since the dealership I previously used frustrates the heel out of me, I am going to a new one this weekend. Any ideas what this could be? Also, I was under warranty when this issue surfaced a few years back. I am no longer under warranty, but, since they did not fix the problem, is there any recourse from Chrysler? Thanks!
#390 of 735 2005 JGC eletrical problems
Sep 15, 2010 (4:07 pm)
I saw this problem in May. It happened several times on one 2 hour trip. I brought it to the dealership figuring they might have the inside scoop on it. They checked it for faults and found none. I changed the battery and thought that solved the problem. .....until now (Sept). I saw it again twice last weekend. All the lights on the dash light up and then disappear. Not sure swhat to do next. The engine seems fine. Perplexed, Joe D
#391 of 735 Re: 2005 JGC Electrical problems [jeepgirl52]
Sep 15, 2010 (4:32 pm)
What you describe sounds like a problem with the Bus System on your car. The Bus System is how the different modules (computers) on your car communicate with each other. If one of these computers is sending invalid information to your instrument cluster, which is also a computer, the cluster will not be able to interpret this information and will also start sending out false information. Your cluster will go crazy.
Some times finding a problem with the Bus System is very time consuming. It could be an internal problem in one of the computers or it could be a wiring problem.
If you have your receipts from when you first started having this problem and it was never fixed correctly Chrysler may honor the warranty. Also the dealer will have copies of any warranty work that was done to your car.
If you don't get satisfaction from the dealer, you might try chrysler customer service.
#392 of 735 2005 JGC electrical problems
Sep 15, 2010 (5:34 pm)
It makes sense what you are saying these dashboard electrical problems are caused by a computer problem. This seems like the type of problem that will take many visits to the mechanic and lots time to have fixed. My 2005 JGC ran great for the first 50k. It still has a nice ride by this electrical problem could be an un-ending issue.
It's too bad because the new 2011 JGC looks awesome but I would now be wary of buying another JCG. Thanks, Joe D
#393 of 735 Re: 2005 grand cherokee limited- intermittent cluster/ac/lights failure [napagirl]
Sep 16, 2010 (3:26 am)
The symptoms you state are very similar to what i went through with my 2006 GCJ-L. After the dealer replaced many components on BUS Can-C it then came down to the wiring harness. alot of modules that were replaced prior to finally replacing the wiring harness were probably Ok but it was not easy to know at that time.
From all the threads I have seen on this site and others i would venture to tell you... ITS THE HARNESS But I reserve the right to be completely wrong,
Since my harness has been replaced, at 85k miles I believe my Jeep is running better than when I bought it used from dealer at 29k miles..
it is my suspicion, now with 20/20 hindsight that the original owner may have experienced the same problem I had (sporadic dash cluster / gauges, etc), and said ... electrical problems - time to trade it in...
These electrical modules at $400+ and 500+ a pop are an expensive way to go the route of " let's try this and see if it works"
see my earlier posts for more info
please keep us posted on your progress
#395 of 735 2005 JGC with not even 77K
Sep 16, 2010 (5:54 pm)
Where do I start! Just tonight, drove jeep, parked and went in somewhere, came out 45 min later only to start it up and it would not turn on. Thought it was the battery and a friend who is a mechanic tried jumping it but that was not it. Everything would turn on, lights, dash, radio, windows up and down, it just would not turn on. Thinking it is something electrical for sure and stressing like crazy!!!! I have had this car since 15K and don't drive it everyday, really baby it! Anyone with some ideas? Don't need to spend more than I have to but it looks like by what everyone is saying, I just need to get rid of it. Not alternator. Not battery since everything comes on. Please, Please imput. Thanks...Much appreciated!!!!