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  #1  
Old 09-06-2014, 05:05 AM
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Air Con problems, new??

This is my first post, so a little back story to start with. Bought our first brand new car, and jeep after some serious consideration between this and a Prado. It is a 2014 Laredo w/ Quadra Lift, Granite Crystal. Love it! The power is great, it suites our needs perfectly, so car like to drive and fits in our smallish carport. Ref: Car manufacter date 05/2014 purchased 20/08/2014,

HOWEVER: As many do, I have encountered our first major hiccup and it is only 800km old.

The initial symptoms were only having air con on the drivers side, and very cold, but no cold air on passengers side or in the rear. Took it back for the 1000k check even if it was a little inconvenient, I thought it best to take it back to the dealer we bought it off which is 200k from where I live, even though there is a local dealer. When booking in the lady said it was an TSB and software update would fix it. I was sceptical as i already had latest software installed according to uconnect.

Half an hour after arriving for service. They tell me the software update has not fixed it and they will need to go through everything to check. The tell me they have checked gas, took dash apart and checked etc, everything looks fine, and now they have lodged a TECH case with chrysler, and I can have it back until they hear back from Chrysler, and from now on I can get any work done by my local dealer.

When I leave I now notice there is NO air con at all, NOTHING. No drivers side or passengers side. Took it back immediately and they take it back into workshop 5mins later the service manager is back and is telling me that the latest software which has been uploaded has now crashed the entire aircon system and they are getting no response. He said they tried a new module and this did not fix (I DONT BELIEVE THIS) and that Chrysler will need to update the software. They have never seen anything like this, and they are going to get onto Chrysler immediately to tell them to issue a problem with the new software and not to upload to anymore vehicles. ( ALL OF THIS SOUNDS BS TO ME)

They said they checked gas, and when I look under the bonnet there is bright green residue around the connection at the front near the radiator. The symptoms are now NO AIR CON and no heat with air conon on, but with the air con off completely ,the heater will work, gets really HOT, but with air con on blow warm air, even on HI. No matter what temp setting, BUT there is a definite difference between air con off and on i.e. really hot air vs pretty warm air.

I have personally checked some fuses under the bonnet and all seems ok, I have done a soft and hard reset of Uconnect, thinking this might do something. Is there anything else I can check or do? When I press the air con button you can definitely hear what I believe to be a relay switching.

I have done some substantial research over the past 24hrs on the net and have come up blank, there is plenty of posts of people losing air con at different times, or losing one side and not the other, or losing after a long drive etc, but none where they have lost it completely.

Where do I go from here? My initial plan is to f/up with dealer that looked it and see if they got a response from Chrysler, at the same time I will book it with my local dealer under warranty because of no air con, and explain how I had another dealer look at it and I am not happy with the response, and thirdly get onto Chrysler/Jeep and see if a TECH case was actually logged for my VIN# and make and official complaint and get a reference number so they are in on the party as well.

I am not one to play the waiting game and want this fixed asap. I have a north qld trip planned in 2 weeks and need it sorted. Do you think it is possibly software related, electrical or mechanical?

Any help, input or support I get from you guys will greatly appreciated.
Thanks

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  #2  
Old 09-06-2014, 05:54 AM
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Re: Air Con problems, new??

There are a lot of modules that routinely get updated in addition to uConnect. So there is a good chance that the dealer did update something. I was in for an oil change last week and they automatically updated the body control module.

You might try disconnecting your negative battery cable for a few minutes. From a number of posts on this forum, it sometimes helps after software updates. It's kind of like having to reboot your home computer after installing or updating software. Since Jeep doesn't have a true on/off switch (something is always on) we need to revert to disconnecting the battery.


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Old 09-06-2014, 06:15 AM
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Re: Air Con problems, new??

Thanks bill

I did actually disconnect the battery for only about a miniute, and it did reset some things but not everything, i.e the clock and I believe the gearbox (could just be my immagination), but radio stations and fuel economy all remained. Then I did a hard reset via the engineering menu as seen on here, to restore to factory defaults,. Maybe I need to disconnect for longer as there may be things with a charge still. Might give this a go 2moro and see what comes of it.

Thanks for your input.

Cheers
Phill
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Old 09-07-2014, 07:23 AM
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Re: Air Con problems, new??

Quote:
Originally Posted by phillbie View Post
When booking in the lady said it was an TSB and software update would fix it. I was sceptical as i already had latest software installed according to uconnect.
The version of Ucoonect you can check and update yourself is for the Uconnect system system itself, it is different to the software/firmware they wil have that is especially for the HVAC system.
Early builds of the MY14 had issues with the HVAC not syncing, and all around weird heating and cooling events. There was a TSB released long ago to fix this, but your car was built long after this problem was solved.
A member on here - Webber had similar systems and ended up having the Uconnect head unit replaced to fix it, he was not alone in requiring a new head unit to fix HVAC issues.

There are a raft of different software updates to suit different issues, some are covered by Uconnect updates, but most are more specific. You can see all TSB related to HVAC here - Jeep Grand Cherokee WK2 - 2011-2016 Grand Cherokee Service Bulletins and Recalls
This one is for some similar issues but not all - http://www.wk2jeeps.com/tsb/tsb_wk2_2400214.pdf
There is so much code in modern cars that it is not a one thing covers all process.

Battery disconnection - when GCLimited discovered a good way to reset the transmission, he disconnected the battery for 15mins before proceeding. It wont hurt to do similar.

As per Webber and others, you may need some hardware replaced.
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Old 09-07-2014, 08:13 AM
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Quote:
Originally Posted by phillbie View Post
Thanks bill

I did actually disconnect the battery for only about a miniute, and it did reset some things but not everything, i.e the clock and I believe the gearbox (could just be my immagination), but radio stations and fuel economy all remained. Then I did a hard reset via the engineering menu as seen on here, to restore to factory defaults,. Maybe I need to disconnect for longer as there may be things with a charge still. Might give this a go 2moro and see what comes of it.

Thanks for your input.

Cheers
Phill
Try leaving it disconnected for about a half an hour. Sounds like you may have some other things going on but definitelg worth a try.
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Old 09-07-2014, 04:42 PM
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Re: Air Con problems, new??

I haven't heard of this issue happening before, but the dealer doesn't seem to be bull shitting you here. It can be frustrating, but best to stay on good terms with the dealer and wait for a fix. It can take time.
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Old 09-07-2014, 06:30 PM
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Re: Air Con problems, new??

Thanks everyone, for the support. I did not get around to disconnect battery for an extended period yesterday and might try that tonight and might get lucky you never know.

Quote:
I haven't heard of this issue happening before, but the dealer doesn't seem to be bull shitting you here. It can be frustrating, but best to stay on good terms with the dealer and wait for a fix. It can take time.
Thanks for this, Yeah I have calmed down a little now, and I think you are right. Best to be on good terms with the dealer and let them get to the bottom of it. It is frustrating for a new car, but the more people I talk to the more seem to have problems in the early days of ownership, not specific to one brand.

Thanks
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Old 09-07-2014, 06:38 PM
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Re: Air Con problems, new??

my jeep was in for a few things on Friday and they also updated the software on the front park assist sensors they said something about them possibly giving a false ready and the software corrected that, I also noticed they updated the BCM module(body control module) which is the same module that was updated the last time I had the issue of the ac not working. sure enough I get in to leave and ac doesn't work, neither do the day runners, turned on just don't work. same items as before. drove around and restarted a few times and still nothing. didn't bother even going back to dealer went home pulled the battery cable and same as last time all was fixed. So it seems that updates to the body control module are what is throwing mine out of sync which is easily fix with a battery cable rest. I like that my dealer is proactive about installing new software but I hope that is it for software flashes for a while. Jeep is running great now with no issues, march 2013 build.
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Old 09-08-2014, 04:06 PM
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Re: Air Con problems, new??

Last night tried the battery disconnect, which I had high hopes for. HAd it disconnected for well over half an hour. However no result. Still no ac nothing at all. It reset the time etc, but not the radio stations. Is this normal? Either way will be booking it into the local dealer to day to see what they can make of it.

Cheers everyone.


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Old 09-08-2014, 07:06 PM
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Re: Air Con problems, new??

Quote:
Originally Posted by phillbie View Post
Last night tried the battery disconnect, which I had high hopes for. HAd it disconnected for well over half an hour. However no result. Still no ac nothing at all. It reset the time etc, but not the radio stations. Is this normal? Either way will be booking it into the local dealer to day to see what they can make of it.

Cheers everyone.


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yeah radio stations don't reset that's normal. sounds like you got some other issues. good luck
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Old 09-08-2014, 09:03 PM
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Re: Air Con problems, new??

Quote:
Originally Posted by phillbie View Post
Last night tried the battery disconnect, which I had high hopes for. HAd it disconnected for well over half an hour. However no result. Still no ac nothing at all. It reset the time etc, but not the radio stations. Is this normal? Either way will be booking it into the local dealer to day to see what they can make of it.

Cheers everyone.


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Since it's near new, I'd be asking if they can take it and keep it until it's fixed, and give you a loaner. You will want to keep harassing them though, to make sure they are actually working on it.
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