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  #25  
Old 02-20-2015, 11:14 PM
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Re: Climate Control Question

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Originally Posted by Angler View Post
Try another dealer, stbentoak. While mine is a 2012, not a 2014 like yours, the climate control works flawlessly.
Totally different system in 2014 and the 2013 and earlier were great systems

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  #26  
Old 02-27-2015, 12:57 PM
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Re: Climate Control Question

I'll throw in my latest...

Hated the climate control system in this GC since picking it up in Sept 2013 ( '14 model year). Move it up 2 degrees in "manual" mode ...full heat. Move it down 2 degrees...full cold. Always chasing a "comfortable" cabin. Worst ever.

Got a TSB done about 4 months ago and this GC has redeemed itself. Just perfect. No complaints.

A couple days ago I remote started the GC and I get in and no seat warmers/ steering heat...and its 23 degrees outside. Up until now the outside air temp had been great. Not the biggest deal, but now the climate control is chasing a cabin temp like it was last year.POS

So as others have said, this issue may all be inter-related.

Going to get a re-flash soon, along with whatever recall has just been announced
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  #27  
Old 02-28-2015, 08:53 PM
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Re: Climate Control Question

HAd the TSP done last month. Seems as if the heater issue is back in fullforce. Nothing other than switching the system to AC will get the system to blow cold air or at least allow for a temperate climate.

Anyone have the system revert back into the flawed operation?
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  #28  
Old 02-28-2015, 09:25 PM
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Originally Posted by qnsexplr View Post
HAd the TSP done last month. Seems as if the heater issue is back in fullforce. Nothing other than switching the system to AC will get the system to blow cold air or at least allow for a temperate climate.

Anyone have the system revert back into the flawed operation?
There was a tsb for the BCM back in june 2014 that updated a problem with the exterior temp sensor try getting that one also. Mine didnt work right until i pulled the battery cable and reset it sfter having the two updates
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  #29  
Old 03-01-2015, 05:21 AM
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Re: Climate Control Question

I've had the same issues, and am still playing around trying to find a happy medium. One workaround with my '15 Overland, during this frigid February, has been to put on the seat ventilation for a couple of minutes. Odd as it sounds, when the cabin gets a bit too hot and I don't want to mess with the temperature/blower controls, a couple of minutes of seat ventilation works!

I realize it's not an "answer", and doesn't do anything if not equipped with ventilated seats, but at least it's something while they try to fix this recurrent problem.
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  #30  
Old 04-20-2015, 04:32 AM
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Re: Climate Control Question

HVAC issues still continuing. Had vehicle updates for DPF and detonation/clatter issues and to look at the HVAC again. Whilst doing the updates the PCM failed but when they investigated the PCM it had a message code for Unusual High Cabin Temp recorded however it was not displaying this message by normal means I am told. They were hoping the new PCM would fix the HVAC but it didn't. The updates obviously are not fixing mine and other vehicle as I think Jeep are completely lost about this HVAC problem. Have any of you had any HVAC parts replaced by your service departments in an attempt to resolve this problem. I am not giving up, the system in my vehicle is pathetic and that's being nice.
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  #31  
Old 04-20-2015, 07:09 AM
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Quote:
Originally Posted by Gustlock View Post
HVAC issues still continuing. Had vehicle updates for DPF and detonation/clatter issues and to look at the HVAC again. Whilst doing the updates the PCM failed but when they investigated the PCM it had a message code for Unusual High Cabin Temp recorded however it was not displaying this message by normal means I am told. They were hoping the new PCM would fix the HVAC but it didn't. The updates obviously are not fixing mine and other vehicle as I think Jeep are completely lost about this HVAC problem. Have any of you had any HVAC parts replaced by your service departments in an attempt to resolve this problem. I am not giving up, the system in my vehicle is pathetic and that's being nice.
I feel your pain my early 2014 had the hvac problem of roasting fhe cabin in the winter. Had to live wigh it until the hvac software fix came out which fixed it perfectly now its just leave it on 72 auto year round and all is well. Maybe that software fix will work on yours even though it may be outside of the date range? Also i found that a later flash on thd BCM messed up my hvac and they didnt know what to do and opened a star case. I went home pulled the battery cable let it sit a while and put back on. After everthing csme back all was well. Maybe something to try. Dealer later admitted how interconnected all the modules are now that updating a seemingly unrelated one can cause issues on others because they chatter with each other.
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  #32  
Old 04-20-2015, 10:58 PM
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Re: Climate Control Question

Thanks silvermax04. Tried the battery disconnect routine overnight, unfortunately still the same. Can't see on my paperwork that the BMC update 08-053-14a has been carried out so will run that by the service dept. They are now going to replace the sunlight and cabin sensors in an attempt to solve problem but are awaiting spares. They are also reluctant to do some of these updates if you are not reporting issues directly associated.
This I understand as the interaction does seem to cause other problems. Totally lacking product development this vehicle. Cant believe Jeep got the electronics so wrong in this model when my 07 WH (WK) was a GEM for me.
PS: Except for the transmission update Jeep did and stuffed Low Range!
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  #33  
Old 04-20-2015, 11:32 PM
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Quote:
Originally Posted by Gustlock View Post
Thanks silvermax04. Tried the battery disconnect routine overnight, unfortunately still the same. Can't see on my paperwork that the BMC update 08-053-14a has been carried out so will run that by the service dept. They are now going to replace the sunlight and cabin sensors in an attempt to solve problem but are awaiting spares. They are also reluctant to do some of these updates if you are not reporting issues directly associated.
This I understand as the interaction does seem to cause other problems. Totally lacking product development this vehicle. Cant believe Jeep got the electronics so wrong in this model when my 07 WH (WK) was a GEM for me.
PS: Except for the transmission update Jeep did and stuffed Low Range!
Yes have them do that BCM update, it is an RRT which means they should automatically do it. It has a fix in it for the external temp sensor updating too slow and the hvac depends on that sensor. My dealer is the type that loads all software updates without asking so my early model 2014 (march 2013) has all of the avaliable updates and all is fine have no issues. But did have some hiccups after flashes that the battery cable reset fixed so always keep that in mind if you have any weird results after flashes.
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  #34  
Old 04-22-2015, 10:55 AM
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Re: Climate Control Question

My only big issue on my 2015 is the seat warmer always runs on high whenever it switches on. Always. It's like the system has no idea there's a low.

On cooler days, where just a little extra warmth would be nice, I end up cooking because the seat is far too warm. They need to add a line of code in there to make it default to low in temperatures higher than around 45 degrees F.

Further, if there is anyone sitting in the passenger seat, the warmer should turn on with the driver one in temperatures below 35F. Above that, it can stay on manual.

One minor thing would be I think the blower runs a bit higher at times than it really needs to. Unless the windshield defroster is running, the air should be much more settled and not be felt blowing around. Running higher makes more unnecessary noise, too. Sometimes it fires up and I find myself having to raise my voice to talk over it.

Other than the above, no issues. Temperature is fine overall.
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  #35  
Old 04-30-2015, 08:35 AM
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Re: Climate Control Question

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Originally Posted by silvermax04 View Post
Yes have them do that BCM update, it is an RRT which means they should automatically do it. It has a fix in it for the external temp sensor updating too slow and the hvac depends on that sensor. My dealer is the type that loads all software updates without asking so my early model 2014 (march 2013) has all of the avaliable updates and all is fine have no issues. But did have some hiccups after flashes that the battery cable reset fixed so always keep that in mind if you have any weird results after flashes.
BMC update was performed last visit I found out today. It's a July 13 built 14 GC so they made sure all the relevant updates had been complied with because of early HVAC issues also. Yep who did the development of this vehicle to allow it to originally operate like that in the first place? They had the vehicle plugged in whilst I was there today and thankfully demonstrated to them how pathetic this HVAC system really is in this vehicle but still a big questions as to what's going on. Had 25c selected on test, duct temps initially rise above 50c then settled around 45c with a cabin temp above 30c and that's where it sat for over 10mins. The duct temp didn't look like it was going to back off even though the cabin temp was over 5c above selected. That was enough indication for them that things are not well I think! Letting them have the vehicle for further investigation later next month so will hopefully will be able to post in a more positive manner.
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  #36  
Old 05-19-2015, 09:38 PM
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Re: Climate Control Question

Original poster with an update. I took my vehicle back to the dealer and insisted they look into my problem further. They gave me a loaner and tore into it. They did some tests and contacted "Star" and were told to replace the Sun Load Sensor, or as they described to me the cabin temperature sensor. They replaced it and we'll see. I only drove for a little while after picking it up but it definitely seemed better. I have a long trip tomorrow and Thursday so I will update after that. A google search found this description of the sensor -
A/C EVAPORATOR TEMPERATURE SENSOR. AMBIENT TEMP SENSOR. BEZEL. IN-CAR SENSOR. SENSOR. SENTINEL SENSOR. SUN LOAD SENSOR. SUN LOAD TEMPERATURE SENSOR. SUNLIGHT SENSOR. SUNLOAD SENSOR.

Jim
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