air conditioner not working on 2006 Acura RL

air conditioner is not blowing cold air. First it was erratic blowing warm air once in a while (the last 2 weeks) now just warm air. Also, when you press the auto button for the a/c the inside button vent lights up automatically. When I press that button the a/c light button goes off.

Asked by for the 2006 Acura RL
take it to a shop. ac low in freon. have them check for leaks, repairs and charging.