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You are in the Jeep Cherokee and Jeep Grand Cherokee
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Jeep Grand Cherokee, Jeep, SUV
#351 of 488 2011 Jeep Grand Cherokee not turn off
May 11, 2011 (5:23 pm)
I'm an x-radar tech with Navy, so my explanation reflects what the Jeep tech and I discussed. My problem was that the push button would not turn off the vehicle. Gripe was verified and duplicated when I arrived at the dealership. First step was to verify key code to the key itself. The Jeep tech brought out a transmission box, about the size of a box of wooden matches, it was yellowing orange with multiple vertical lights. The key passed the test for transmission and for code recognition as per "pinn".
The push button itself is a quick disconnect. Beneath is a set of contacts and another button which is housed inside the remote ignition module. On the other side of the remote ignition module is quick disconnect plug. The technician pulled the plug off to stop the car.
Warning!!! Do this only at the dealership because if you attempt to pull circuit breakers, fuses or the plug from the remote ignition module, the anti-theft security protocol will "sterilize" any existing memory and will go into "default" as if it left the factory.
The problem here are two competing CPU's and proprietary input qualifiers. Both the remote start ignition, whether its wireless or push button, the ignition module registers, initiates and monitors a small portion of systems where the main CPU monitors everything. This is great for anti-theft but in the normal operation of the vehicle, there is a distinct hesitation when both CPU's fight for control or release control over the transmission, all electrical controls, engine throttle control, etc, etc and etc.
The maintenance supervisor put the push button on order, but we learned that the button itself was on "back order". Obviously, there's a bigger issue here than Jeep is letting on. The next issue was the remote Ignition module. There's a distinct possibility that if the button malfunctioned, or "shorted" or "open" which prevented the car from shutting off, the remote ignition module might be bad. Obviously, if the remote ignition module controls some of the same systems as the main CPU, then there might be some system failure, but you won't know until you put the Jeep through all its paces and test every system.
Jeep has a master control computerized diagnostic unit which analyzes both the CPU and remote ignition module. Theoretically, this is warranty work. The Jeep MUST BE PUT ON THE DIAGNOSTIC machine to test all inputs, outputs and critical systems to ensure the CPU and remote ignition module are functional.
I hope this helps'
#352 of 488 Re: 2011 Jeep Grand Cherokee not turn off [macemmitt]
May 11, 2011 (6:55 pm)
Being an ex-IT guy, your explanation makes alot of sense and I will share it with the dealer (who still has my Jeep). Interestingly enough Chrysler from the Detroit "home office" called me and told me that the dealership is misdiagnosing the problem and the real problem is the "WIN MODULE" and further said that "we are having alot of problems with the WIN Module in the newer vehicles" and he said he would call the Dealership and let them know (which he didn't). So I told the dealership this and they laughed because the WIN module has already been replaced. With doing nothing, they said it is working fine but it did "stutter start" first. I told them to give the Jeep to a good technician and have him drive it until it fails.
#353 of 488 My New problem with my new JGC
May 12, 2011 (3:22 pm)
My JGC is now about 8 months old, less than 9500 miles. Already battled the WIM problem, now my newest delimma for which the Jeep has been in the dealership's shop for 4 days is that the AC blows cold air on drivers side and in the rear vents, but on the passenger side blows heat. Seemed to me that it was a problem with the recirculate button or the controller on that side. It took the dealer at least a day to "duplicate" the problem, now it's been another day with no answer or explanation as to the cause.
#354 of 488 Re: Key Issues, Radio Presets and Acceleration [kirman]
May 13, 2011 (6:48 am)
Oh my gosh, I have had my jeep only 3 months - brand new and it's been in the shop 15 days now for the same issue - left me stranded 2x and they won't declare it a lemon. What the heck - I don't want the stupid car anymore. This is horrible - I'm sick over the whole thing.
#355 of 488 Re: Key Issues, Radio Presets and Acceleration [kimbo67]
May 13, 2011 (7:33 am)
Check the lemon law in your state. In CA, I think it must me in the shop for 30 days within an 18 month period, and not necessarily consecutive. I've met half of that criteria. As soon as it it meets the rest which I'm sure it will, I will get rid of it. Get yourself a lemon law lawyer, don't count on the manufacturer. Again, in CA there is a provision in the lemon law that the lawyer will not cost you anything, the manufacturer will. Good luck.
May 13, 2011 (10:55 am)
Hi does anyone know if these key issues have been resolved at the factory level. I have a new JGC Overland on order with a build date for late this month. Does anyone know if these problems are occuring on recent builds or older models?
#358 of 488 Re: Key Issues [grimsby1]
May 13, 2011 (1:54 pm)
When mine did it (Oct 2010) it was an "unknown new" issue to them... I bought mine in August 2010 if that helps.
#359 of 488 Re: Key Issues [grimsby1]
May 13, 2011 (3:20 pm)
My JGC Overland was built in February and I don't seem to have any key problems.
By the way, I just bought Bridgestone Blizzack DMV1 winter tires and wheels (20") from Tire Rack. I figured I would get them early while what I want is in stock.
#360 of 488 Re: Key Issues [joeb24]
May 15, 2011 (11:28 am)
Thanks I take delivery in June sometime. I will come back with updates.