Climate control 149Pressing the lower button longer: fanand cooling are switched off.Pressing the upper button longer: thefan runs at maximum speed.To return to automatic mode: PressAUTO button.Air distribution l, M, KPress appropriate button for desiredadjustment. Activation is indicated bythe LED in the button.l = to windscreen and front doorwindows.M = to head area via adjustable airvents.K = to foot well.All combinations are possible.Return to automatic air distribution:press button AUTO.Cooling nPress button n to switch on cooling.Activation is indicated by the LED inthe button. Cooling is only functionalwhen the engine is running andclimate control fan is switched on.Press button n again to switch offcooling.The air conditioning system cools anddehumidifies (dries) when outsidetemperature is above a specific level.Therefore condensation may formand drip from under the vehicle.If no cooling or drying is required,switch off the cooling system for fuelsaving reasons. When the coolingsystem is switched off, no enginerestart will be requested by theclimate control system during anAutostop. Exception: defrost systemis activated and outside temperatureabove 0° C requests a restart.The display will indicate ACON whencooling is activated or ACOFF whenthe cooling is deactivated.Activation or deactivation of coolingoperation after engine start can bechanged in the menu Settings in theInfo-Display. Vehicle personalisation3 127.Air recirculation mode 4Press button 4 to activate airrecirculation mode. Activation isindicated by the LED in the button.Press button 4 again to deactivaterecirculation mode.9 WarningThe exchange of fresh air isreduced in air recirculation mode.In operation without cooling the airhumidity increases, so thewindows may mist up from inside.The quality of the passengercompartment air deteriorates,which may cause the vehicleoccupants to feel drowsy.In warm and very humid ambient airconditions, the windscreen might mistup from outside, when cold air isdirected to it. If windscreen mists upfrom outside, activate windscreenwiper and deactivate l.