Before you shut your car off, turn off ac but leave the circulation button on,It's also in the owners manual. I had same problem took car to dealership and told me what to do.
I had this same problem with my Toyota Corolla S Plus, turn off Ac button and leave the recirculate button on when you go to shut you car off. I took mine in to dealership for same problem. Also it's in the owners Manuel book. Hope that helps!