2009 Mercedes SL-Class Owner's Manual - Page 168

Controls in detail Climate control system Function a b Q Air volume control U Air distribution and air volume (automatic mode) Temperature control, driver's side Ñ Air distribution, driver's side Recommendation/Notes (Y page 171) i Switch on the automatic mode. The indicator lamp in (Y page 168) button U comes on. i Set the temperature to 72‡ (22†). (Y page 168) (Y page 170) c d Notes on climate control system The climate control system is operational whenever the engine is running. You can operate the climate control system in either the automatic or manual mode. The system cools or heats the interior depending on the selected interior temperature and the current outside temperature. It can only function optimally when you are driving with the windows and the retractable hardtop closed. Nearly all dust particles, pollutants and odors are filtered out before outside air enters the passenger compartment through the air distribution system. G Warning! Severe conditions (e.g. strong air pollution) may require replacement of the filter before its scheduled replacement interval. A clogged filter will reduce the air volume to the interior and the windows could fog up, impairing visibility and endangering you and others. Have a clogged filter replaced as soon as possible at an authorized Mercedes-Benz Center. The air conditioning will not engage (no cooling) if the A/C mode (Y page 167) is deactivated. pages. Otherwise the windows could fog up, impairing visibility and endangering you and others. Keep the air intake grille in front of the windshield free of snow and debris. When the retractable hardtop is closed, do not obstruct air flow by placing objects on the air flow-through exhaust slots below the rear window. G Warning! Follow the recommended settings for heating and cooling given on the following i If the vehicle interior is hot, ventilate the interior before driving off. The climate control will then adjust the interior temperature to the set value much faster. 166