2nd Row Air on While Car is off

Has anyone come across this.

I Have a CX-9 GT 2007. One day I drove somewhere, and turn the car off. about 2 seconds later the 2nd row air turns on. Can't turn it off!!... I tried turning the car on, and off. I tried to turn the car on, and turn read control to front control option, turn off the air. air was still on. I finally played around with differnt ways, and it finally turned off. Never happened again.. Has anyone heard of this?
 
I had mine start flashing the hazards for about 5 seconds. The keys were in the house and nobody was home except me. I was planning on taking a day trip that afternoon...I made my friend drive instead because it made me nervous.
 
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