AC shut off ?
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Joined: Jun 2018
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Did you try hitting the A/C button while in defrost? If it still works, then unfortunately no. I'd just get it on defrost/feet, and then for sure you can run it without A/C; I've done it that way. Hope this helps.
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Joined: Oct 2018
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From: Rifle, CO
I have an '18 XLT, so no auto climate. It doesn't turn the AC on when the defog or defroster is on. My '11 Edge SEL with the dual zone did do that often though, so it's something with the auto climate controls it looks like to me. That would lead me to believe that there is a fix for it potentially in Forscan settings changes. I haven't looked for it since it's not applicable to me though, or maybe it's there and hasn't been rooted out yet.
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Because he wants air from the windshield outlets without A/C, I guess? 
I also would like A/C independence when you have a freaking switch. It's okay to automatically engage it with defrost, but we should be able to turn it off. What's the problem with that? The good news you can use windshield and feet mode with or without A/C, and that's good enough for me. Not bothered that defrost is A/C all the time, but it shouldn't be that way IMO. The other potential good news is FORScan might have a solution for the OP. Check their forum on the stickies at the top of this forum OP. Good luck.
I also would like A/C independence when you have a freaking switch. It's okay to automatically engage it with defrost, but we should be able to turn it off. What's the problem with that? The good news you can use windshield and feet mode with or without A/C, and that's good enough for me. Not bothered that defrost is A/C all the time, but it shouldn't be that way IMO. The other potential good news is FORScan might have a solution for the OP. Check their forum on the stickies at the top of this forum OP. Good luck.
Last edited by elptxjc; Nov 2, 2018 at 03:20 PM.
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Joined: Jul 2012
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From: Indiana
It's not only a defroster, it's also a defogger. That means it's intent is also to reduce humidity inside the cabin so the windows stay clear of interior moisture. The only way that can happen is if the A/C compressor is running. But even though the A/C compressor is running, turning on Defog/Defrost does not turn on actual A/C (i.e., it will not blow cold air through the vents unless you have the temperature set to cold and the vents also selected). If you turn on the defog/defrost with the temperature set to high, it will blow warm air even though the A/C compressor is running so the evaporator can remove humidity from the air, thus eliminating window fogging. In this way it acts as an A/C system with reheat, which is the most effective way to dehumidify.
It will, of course, also defrost a frozen windshield on the high heat setting. It needs to dehumidify the cabin in this mode as well, since interior humidity will condense and freeze on a cold windshield.
As far as I'm aware, every vehicle works this way, and it's been this way for a very long time.
It will, of course, also defrost a frozen windshield on the high heat setting. It needs to dehumidify the cabin in this mode as well, since interior humidity will condense and freeze on a cold windshield.
As far as I'm aware, every vehicle works this way, and it's been this way for a very long time.
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It's not only a defroster, it's also a defogger. That means it's intent is also to reduce humidity inside the cabin so the windows stay clear of interior moisture. The only way that can happen is if the A/C compressor is running. But even though the A/C compressor is running, turning on Defog/Defrost does not turn on actual A/C (i.e., it will not blow cold air through the vents unless you have the temperature set to cold and the vents also selected). If you turn on the defog/defrost with the temperature set to high, it will blow warm air even though the A/C compressor is running so the evaporator can remove humidity from the air, thus eliminating window fogging. In this way it acts as an A/C system with reheat, which is the most effective way to dehumidify.
It will, of course, also defrost a frozen windshield on the high heat setting. It needs to dehumidify the cabin in this mode as well, since interior humidity will condense and freeze on a cold windshield.
As far as I'm aware, every vehicle works this way, and it's been this way for a very long time.
It will, of course, also defrost a frozen windshield on the high heat setting. It needs to dehumidify the cabin in this mode as well, since interior humidity will condense and freeze on a cold windshield.
As far as I'm aware, every vehicle works this way, and it's been this way for a very long time.
