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Old 09-26-2013, 02:54 PM   #1
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2013 Wrangler - A/C on all the time?

Alright, so I've got a 2013 JKRU with automatic climate control however, I rarely use the 'auto' settings.

My problem is that it doesn't matter whether I want heat or whether I turn the temperature to cooler my air conditioner compressor turns on and off repeately, now I have actually noticed that this is completely intermittent. Occasionally I will turn it to cold and it will just blow through outside, unheated air while other times it will blow air conditioned air. There was one time where I wanted heat however, it would only blow air conditioned are and no heat whatsoever, when I turned the jeep off then back on then I got heat. I have no idea how the climate control works in this Jeep so I was wondering if this was 'normal' for a Jeep like leaking water, or if it's because there's something wrong with the computer or a sensor? Any help would be appreciated as my fuel economy is getting worse with the break-in and not better and I'm beginning to wonder if this is the issue.

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Old 09-26-2013, 02:58 PM   #2
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Ac

My 2013 does the same. I had a 2007 Liberty prior to this that also did this. I was told by d3ealer that the compressor runs no matter what setting or what outside temp is in order to keep the compressor from seizing up from lack of use.

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Old 09-26-2013, 03:30 PM   #3
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Probably completely unrelated but back when I had a Saab, the engine temp sensor would act up - when it thought the engine was cold (randomly dropped all the way down like the car was off) then the heat wouldn't work. Neither would defrost - had a lot of fun scraping the INSIDE of my windshield one roadtrip...

Turning the car on and off a few times usually fixed it. Guessing that with CANBUS the car has a mind of it's own
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Old 09-26-2013, 03:40 PM   #4
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I know on most vehicles the AC compressor does cycle when you have the heat on defrost or any combination that includes defrost for the reason Dnjn123 mentioned. I haven't played with the Jeep enough to see if it is the same. If you want to see put the heat on floor and see if the compressor continues to cycle, it wouldn't in my truck.
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Old 09-26-2013, 03:59 PM   #5
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Thanks for the responses, glad it just isn't my Jeep. I had a 2010 Patriot that acted like most of my other vehicles, A/C on with defrost or when the button was pressed, A/C off in all other settings. I just find it frustrating that when I was outside unconditioned air through my vents then the A/C kicks in
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Old 09-26-2013, 08:50 PM   #6
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As long as my '12 w/ climate control is not in the auto positions or a defrost position, and the a/c light is not on, the compressor never kicks in. I only get outside air not cooled or heated air if the temp setting is high enough. So if the fan speed is on a number and the mode knob is not in a defrost mode, the compressor doesn't cycle. UNLESS... the wipers are on. It seems to know, if wipers are on, to use the compressor to dehumidify cabin air.
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Old 09-26-2013, 09:13 PM   #7
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I've written about the same issue on my 2013 JKU Sahara. Along with the other little idiosyncrasies, I chalked it up to demonic possession. But like others have mentioned, a time or two of cycling the engine on and off, the A/C turns off again.
I remember older cars would run the compressor when the car was in the DEFROST position because, like one poster said, it turns it so it doesn't seize over the winter.
My concern is that when it is running the compressor when I don't want it to, is that it is killing my already lacking MPG...

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