2010 Mercedes GL-Class Owner's Manual - Page 178

176 Climate control Function Recommendation/Notes C Temperature control, passenger i Set the temperature to 72‡ (Y page 178) side (22†). D ± Rear climate control on/ off or air supply for rear passenger compartment on/off (USA only) ^ Rear climate control on/ off or air supply for rear passenger compartment on/off (Canada only) E Air distribution (directs air through center and side air vents) F Air distribution (directs air through the footwells and side air vents) G Air volume display H Decreasing air volume I Rear window defroster J Air recirculation (Y page 179) (Y page 191) (Y page 178) Controls in detail (Y page 178) i Only use this function for a (Y page 180) short time, e.g. in a tunnel. Otherwise, the windows can fog up due to lack of fresh air. i Switches on the climate (Y page 177) control system. The indicator lamp in button ^ goes out. Nearly all dust particles, pollutants and odors are filtered out before outside air enters the passenger compartment through the air distribution system. K Interior temperature sensor L Climate control on/off Notes on climate control The climate control 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. 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