I have a CLK320 Cab 2004. I noticed today that each time I temporarily stopped the car(eg at traffic lights) the Aircon seemed to stop cooling. The fan was still working. When I started moving the cool air started flowing again. The AC was on Auto setting. Is this something I need to contact the Dealer about or is it a function of the unit to turn itself off when the set temp is reached. I just thought it strange that this action did coincide with stopping the car. I would appreciate any thoughts.