Originally Posted by Haley
Did you have the headlight switch replaced? The headlights and dashboard lights have been flickering in my 2006 Grand Cherokee Laredo. I took it to the garage but, of course, it's not doing it for them so they're not sure of the problem. Their only suggestion so far is to replace the headlight switch in the Jeep. I have called several Jeep dealerships and no one has heard of this problem so they didn't have any suggestions other than to come in for them to look at it.
I did NOT have the headlight switch replaced. there are (i believe) 3 BUS circuits and my problem was not on the BUS cct that related to headlights. i have seen many posts with Jeepers mentioning your same problem. Mine was specifically the "dash cluster" and did not relate to headlights and wipers going on and off. My Jeep technician explained it to me in detail about how the ccts fail and headlights flash etc.
My ultimate solutions after having replaced many "modules" some twice, was to go for the whole wiring harness... the big deal...top of the food chain... and since that fix, my Jeep runs better than new. much smoother engine idle too. very apparent. i could not say that would be the same for you and others but, my guess is that i know if installed correctly a new harness (actually there are two of them to my knowledge) could not hurt at all. it is as i understand it an 8 - 12 hr procedure that only, in my estimation a properly trained Jeep tech should do, no offense to others. the senior tech at Arrigo DCJ WPB knows the procedure and i recommend him (initials F.S.)
read my earlier original and subsequent posts and i talk about what i went thru including all the modules that were replaced. some were burnt and some were just trial and error. ultimately it is the harness for me that was the answer.
i was lucky enough i suppose to get the factory to cover the cost of harnesses after much wrangling and back and forth. but not after spending $2100 on modules. so it worked out kinda sorta well, but at least it was fixed. after the earlier modules i would not be down the road ten minutes and the dash cluster would go wild. i took video of it cause at one point they just could believe after 5 modules that it was still happening. when they say the video they could not argue at all. it was incumbent on them to fix it.
BTW i never once raised my voice to any service advisor or tech and was always the picture of kindness and diplomacy as abusing them will NEVER work. just a side note on that for anyone's interest.
best of luck