Ive noticed in my 2011 TSX that if I'm sitting for an extended period of time with the car in gear, cold air will start to come out of the vents. If I put the car in park the air warms up or if I start driving it warms but if I'm stopped and the car is in gear it starts blowing cold air. Yes in all senerios the temp guage is near the middle of the normal range. Any ideas?