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  #1  
Old 10-02-2015, 08:22 AM
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HVAC Issue

Ever since I had the HVAC update done a few months ago, my system has never acted the same. I have always had the temp on AUTO on 68 and rarely ever having to change the temp. I noticed an issue not long after it was done and did talk with the Service Manager. He gave me the "that's normal operation, but we can take a look at it if you would like." I said I would see how it goes but now with the temps around 40-45 in the morning, I'm not happy. The defrosters won't come on nor does the fan go up while driving to warm up the inside. After I manually had the defrosters on this morning, I put it back on AUTO and the temp at 70. Fan never got more than 1 and when I turned AUTO off, it was blowing air to the floor vents. This isn't right at all. Your thoughts?

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  #2  
Old 10-04-2015, 07:18 PM
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Re: HVAC Issue

Mine was whacked out after the HVAC update also, pulling the battery cable fixed it, something to try if you have not already.
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  #3  
Old 10-04-2015, 07:33 PM
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Re: HVAC Issue

How do you do that?


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  #4  
Old 10-04-2015, 07:43 PM
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Re: HVAC Issue

Quote:
Originally Posted by Roki303 View Post
How do you do that?


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Unhook the negative battery cable for 30+ minutes then put it back on. Sometimes it can help solve electrical gremlins induced by flashes. It fixed mine after the HVAC flash and also after the BCM flash. Flashing can interrupt the module chatter with each other causing strange effects, pulling the cable lets every thing reset and come back up graceful. The only personnel things I have noted that it erases when you do it is the equalizer settings which are quick to put back.
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  #5  
Old 10-06-2015, 07:56 PM
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Re: HVAC Issue

Will give it a try ...


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  #6  
Old 10-13-2015, 08:14 PM
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Re: HVAC Issue

I too am interested in this. I have been leery of the HVAC flash as I don't want other issues.

My HVAC, when the outside temps are H.O.T. doesn't function well after a while. The max fan doesn't blow (even though it was a few minutes before) as hard and the temp is luke-warm.

Oh, I never use AUTO as I prefer the LO setting most of the time her in So Cal.

Is the flash a fix for this and is it free or could it be covered under an aftermarket extended warranty?
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  #7  
Old 10-13-2015, 09:07 PM
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Quote:
Originally Posted by quikduk View Post
I too am interested in this. I have been leery of the HVAC flash as I don't want other issues.

My HVAC, when the outside temps are H.O.T. doesn't function well after a while. The max fan doesn't blow (even though it was a few minutes before) as hard and the temp is luke-warm.

Oh, I never use AUTO as I prefer the LO setting most of the time her in So Cal.

Is the flash a fix for this and is it free or could it be covered under an aftermarket extended warranty?
I noticed the HVAC flash doing the most good in the winter but it did also help summer operation. The hvac flash fixed eratic operation and wild temprrature swings. My summer ac operation never felt as cold as it should, recently I had it checked and found it was under charged from the factory, they recharged it and all good now. Seperste issue but that could possibly be your issue if it just does not feel cold enough in summer.

Concerning the hvac flash if you are in range of the dates on the tsb and within your warranty it should be covered. Tsb was for 2014 GCs
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Old 10-14-2015, 10:28 AM
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Re: HVAC Issue

Looks like an updated HVAC flash was just released: http://www.wk2jeeps.com/tsb/tsb_wk2_2400515.pdf
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  #9  
Old 10-14-2015, 11:00 AM
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Quote:
Originally Posted by TurboRush View Post
Looks like an updated HVAC flash was just released: http://www.wk2jeeps.com/tsb/tsb_wk2_2400515.pdf
They released it as an RRT also so all will get it if they come in.
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  #10  
Old 10-18-2015, 09:30 PM
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Re: HVAC Issue

I'm calling tomorrow to get my Jeep in and have that done. It was 25 degrees here this morning and I had it on AUTO set to 70. The fan was blowing at my feet at lowest fan for over 15 minutes. Kind of gets cold in the car and I'm tired of having to play with this damn thing. Hopefully this new RRT will fix the issue.
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Old 10-27-2015, 08:06 PM
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Re: HVAC Issue

Sno, any update. Thinking about taking mine as well...


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  #12  
Old 10-28-2015, 06:01 AM
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Re: HVAC Issue

Yep, the jeep went in yesterday. The service manager saw me and said "Did we fix this issue a few months ago?" I told him that he can think so but it hasn't been the same since the 1st HVAC update and here were the new issues. They had the jeep all day and did the RRT as well, recalibrated it, and tested. They couldn't see anything wrong (go figure). For a few minutes after getting it back it seemed like it was working as it should but then it went back to old ways. 56 degrees outside and the inside set at 70, set to AUTO. Turn Auto off and it has the A/C on and blowing in my face at fan 2. I don't know where they get it that it is right but that isn't. I'll wait for the customer survey to come and I'll report it on there. If I have to, take it to a different dealership to be looked at.
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