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Unread 10-05-2019, 02:25 PM   #1
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Why does my A/C keep turning on?

Why is it that everytime I start my Ď13 Titanium Hatch, my A/C turns itself on full blast? Itís driving my crazy as to why it continues to do this? And yes, itís turned off before I turn the car off at the end of the day.

Has anyone else had this issue? Is there a way to reset something to stop this from happening? Itís October now, so I donít need the A/C turning itself on at 6am.

Titanium trim w/ a push to start, if that matters.




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Unread 10-05-2019, 04:48 PM   #2
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Is yours the dual zone climate control version?
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Unread 10-05-2019, 07:35 PM   #3
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Quote:
Originally Posted by reverendhtc View Post
Is yours the dual zone climate control version?


Yep, it sure is. Any ideas? I often times run my A/C on my commutes home because Iím hot & tired, but always shut it off before parking the car. Then each morning I start up & it comes on full-blast. Why is it doing this?



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Unread 10-06-2019, 05:18 AM   #4
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Maybe you can turn it off another way, like using the blower speed switch instead of the a/c button..............
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Unread 10-06-2019, 08:06 AM   #5
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I asked as I have the same system.

I have just turned off the A/C compressor ( but left the system in the on setting for blower only) and switched off the car.

I will let you know if it remembers the setting in the morning.
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Unread 10-06-2019, 08:13 PM   #6
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My 18 only does it then the automatic button is on.
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Unread Yesterday, 02:54 AM   #7
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My 2012 remembers whatever I select when I switch the car off.

Auto on or off, it remembers the last setting. So different to yours.
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Unread Today, 01:11 PM   #8
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Also, turning on defrost will turn on A/C. I believe that this is true even if defrost is auto-selected.

A/C not only cools the air, it also removes moisture from the air, so it is a part of the defroster setting, even when the heat is on, since the probable desired result is to remove condensation from the glass as quickly as possible. This is normal.

I don't have the vent selection on auto, so it doesn't happen to me. Whenever I do select defrost, the A/C always comes on. It may seem counter intuitive when you probably want hot air, but the A/C will start to clear the windows even before the heat comes up, and once the heat does come up, it will still clear faster with the A/C going than it will without. Bonus, the less hot but dry air is less likely to crack your windshield.
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Last edited by SupraGuy; Today at 01:19 PM.
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