My 2000 328i has a problem with the ac. it blows mild (not cold) air out of the passenger side of the ac system and colder air out of the driver's side. I know that my car does not have a dual climate system and I have never had this problem before. I also have never had a charge of freon or whatever is the coolant charged up in this car. Has any one ever had this problem. O' btw my ac unit is a digital thermostat type. thanks Noah