Grin...I work for Nissan. I had to drive a new Maxima to one of our regional offices this week. It was like driving a space ship with all the buttons and other electronic gadgets. This from someone who is familar and comfortable with technology.
There was this one button with an icon that appeared to be an indicator for when the front hood was open. The light was on, so I hit the button thinking it would go off. It never did. So I drove the car all the way to Costa Mesa wondering if the hood would fly up. It didn't. Turns out the icon on that button signified the flow of outside air into the car.
The heat was on and it was a warmish day in the L.A. area, so I tried to turn the heat off. Turns out the heat and AC are controlled by sensors that automatically blow warm or cold air depending on the desired temperature set in the car's computer.