It is not always on per say, just always blowing. I have had multiple cars that have done this. Yes you will feel a bit hit in acceleration when you are actually running the AC. I hate this but living in Arizona I run the AC.
Turn all the instruments off and it is not technically using the AC at that point, make sure that button is also pushed off. You can adjust the climit by another area, right under your vent is a "dial" (for lack of a better word) that has blue and red, push that over to the middle and you should be fine.
Anyone feel free to correct me, but that should be it. You will still feel a little bit of air coming through but it will not be cold, just whatever the temp is outside.
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