2003 Mercedes E-Class Owner's Manual - Page 178

Controls in detail Automatic climate control* This provides the fastest possible cooling of the vehicle interior (when windows and sliding/pop-up roof are closed). Defrosting Deactivating Press button P. The indicator lamp on the button goes out. Defrosting is turned off. Air recirculation mode Switch to air recirculation mode to prevent unpleasant odors from entering the vehicle from the outside. This setting cuts off the intake of outside air and recirculates the air in the passenger compartment. Warning! i If you keep button O pressed, the side windows and the sliding/pop-up roof* will be closed. The air recirculation mode is activated automatically: at high outside temperatures if the concentration of carbon monoxide and nitrogen oxide in the outside air increases, for example in a tunnel (charcoal filter activated ( page 180)) If you have turned off the air conditioner ( page 170) or the outside temperature is below 41°F (5°C), the air recirculation mode will not switch on automatically. i These settings should only be selected for a short time. Activating Press button P. The indicator lamp on the button comes on. Switch off air recirculation, if selected. Press button O. The indicator lamp on the button goes out. Close center air outlets. Adjust side air outlets upwards. G When the outside temperature is below 41°F (5°C), only switch to air recirculation mode for short periods to prevent window fogging. Activating Press button O. The indicator lamp on the button comes on. 178