2011 Mercedes S-Class Owner's Manual - Page 296

294 X Setting the air vents To deactivate: press the g rocker switch up or down. The indicator lamp in the g rocker switch goes out. i Air-recirculation mode switches off automatically: Rafter approximately five minutes if outside temperatures are under about 41 ‡ (5 †) Rafter approximately five minutes if cooling with air dehumidification is deactivated Rafter approximately 30 minutes if outside temperatures are over about 41 ‡ (5 †) Switching the residual heat on/off It is possible to make use of the residual heat of the engine to continue heating the stationary vehicle for up to 30 minutes after the engine has been switched off. The heating time depends on the temperature that has been set. i Residual heat is deactivated automatically: Rafter about 30 minutes Rwhen the ignition is switched on Rif the battery voltage drops Rif the coolant temperature is too low Setting the air vents Important safety notes G Warning When operating the climate control, the air that enters the passenger compartment through the air vents can be very hot or very cold (depending on the set temperature). This could cause burns or frostbite to unprotected skin in the immediate area of the air vents. Always keep sufficient distance between unprotected parts of the body and the air vents. If necessary, use the air distribution adjustment to direct the air to air vents in the vehicle interior that are not in the immediate area of unprotected skin. Climate control i The blower will run at a low speed regardless of the airflow setting. i If you activate the "residual heat" function at high temperatures, only the ventilation will be activated. The blower runs at medium speed. X In order to ensure the direct flow of fresh air through the air vents into the vehicle interior, please observe the following notes: Rkeep Turn the key to position 0 in the ignition lock or remove it. X To switch on: press the Ì rocker switch up or down. The indicator lamp in the Ì rocker switch lights up. X the air inlet grille on the hood free of blockages, such as ice, snow or leaves Rnever cover the vents or air inlet and outlet grilles in the vehicle interior. i For virtually draft-free ventilation, adjust the sliders of the air vents to the center position. To switch off: press the Ì rocker switch up or down. The indicator lamp in the Ì rocker switch goes out.