2006 Mercedes SLK-Class Owner's Manual - Page 200

Controls in detail Automatic climate control* Maximum cooling MAX COOL When operating the automatic climate control system in automatic mode U and there is a high need for cooling, MAX COOL is activated. This provides the fastest possible cooling of the vehicle's interior (when retractable hardtop is closed). MAX COOL will appear in display e Air recirculation mode Switch to air recirculation mode to prevent unpleasant odors from entering the vehicle from the outside (e.g. before driving through a tunnel). This setting cuts off the intake of outside air and recirculates the air in the interior. Warning! Activating Press button , ( page 192). The indicator lamp on the button comes on. i The air recirculation mode activates automatically at high outside temperatures. The indicator lamp on button , is not lit when the air recirculation mode is automatically switched on. A quantity of outside air is added after approximately 30 minutes. ( page 192). G Fogged windows impair visibility, endangering you and others. If the windows begin to fog on the inside, switching off the air recirculation mode immediately should clear interior window fogging. If interior window fogging persists, make sure the air conditioning ( page 187) is activated, or press button P. 199