2007 Mercedes E-Class Owner's Manual - Page 226

Controls in detail 4-zone automatic climate control Nearly all dust particles, pollutants and odors are filtered out before outside air enters the passenger compartment through the air distribution system. The air conditioning will not engage (no cooling) if the A/C mode ( page 234) is deactivated. Warning! i Severe conditions (e.g. strong air pollution) may require replacement of the filter before its scheduled interval. A clogged filter will reduce the air volume to the interior. If the vehicle interior is hot, ventilate the interior before driving off, see "Summer opening feature" ( page 239). The climate control will then adjust the interior temperature to the set value much faster. Keep the air intake grille in front of the windshield free of snow and debris. Do not obstruct air flow by placing objects on the air flow-through exhaust slots below the rear window. Deactivating the climate control system Warning! G G Follow the recommended settings for heating and cooling given on the following pages. Otherwise the windows could fog up, impairing visibility and endangering you and others. When the climate control is switched off, the outside air supply and circulation are also switched off. Only choose this setting for a short time. Otherwise the windows could fog up, impairing visibility and endangering you and others. Deactivating Press button ´ ( page 222) or ( page 223) until the display 4 ( page 222) or ( page 223) is cleared. 225