I'm new to owning a 2002 Audi a4, it didn't come with a manuel so I'm trying to figure some stuff out. I have checked the specs for this car and AC is standard but I can't figure out what button it is. Is it the "econ" button? Or the button with an A and an arrow around it? I also can't get the main heating vent to work at the same time as the floor, is that normal?

 

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