...I have owned three BMWs and have always been completely PUZZLED as to why this dial even exists. Is not such a dial completely and utterly at odds with the entire concept of an AUTOMATIC climate control system? The previous poster was entirely correct - put this diall all the way "blue" when the heat is on and you get essentially no heat. What exactly is an AUTOMATIC climate control system when there is a MANUAL dial that changes the temperature by 30 degrees? For the life of me, I simply cannot figure out why I have to keep manually adjusting my automatic climate control system.