I wanted to get some input on my lexus climate control system. My lexus has a intermittent temperature variation between the two center vents and the outer two vents. This happens when I am driving, either city or highway, mostly when I'm in city driving or highway stop & go traffic. Both the center vents feel as if the a/c compressor shuts off. But its only in the two center vents. What I notice specifically is the condensation that rapidly appear on the vent direction levers. This comes and goes at random times. I brought the car to Lexus...of coarse they found no codes and said everything was fine, such as the refrigerant levels. Any other suggestions any one here might have?