2006 Mercedes R-Class Owner's Manual - Page 242

Controls in detail 3-zone automatic climate control* i Press and hold button : for approximately 2 seconds. The windows, and/or the tilt/sliding sunroof*, (or tilt/sliding panel*) will return to their previous position. You can release button : once the opening procedure has begun. The windows and/or the tilt/sliding sunroof* (or tilt/sliding panel*) continue opening until they have reached their previous position. A window or the tilt/sliding sunroof* (or tilt/sliding panel*) will only return to its previous position if it has not been moved to another position using the respective window switch or tilt/sliding sunroof* (or tilt/sliding panel*) switch after it was closed with button :. A window or the tilt/sliding sunroof (or tilt/sliding panel*) that was moved will remain in its current position if button : is used to re-open the remaining windows or tilt sliding sunroof* (or tilt/sliding panel*). At outside temperatures above 79°F (26°C) the system will not automatically switch back to outside air. A quantity of outside air is added after approximately 30 minutes. Air conditioning The cooling function, only operational when the engine is running, cools the vehicle down to the selected interior temperature. The cooling function also dehumidifies the air in the vehicle interior, thereby preventing the windows from fogging up. i Condensation may drip out from underneath the vehicle. This is normal and not an indication of a malfunction. Warning! G If you turn off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and others. 241