2011 Mercedes ML-Class Owner's Manual - Page 124

122 Overview of climate control systems Vehicle equipment i This manual describes all the standard and optional equipment of your vehicle which was available at the time of purchase. Country-specific differences are possible. Bear in mind that your vehicle may not feature all functions described here. This also refers to safety-related systems and functions. Overview of climate control systems Important safety guidelines i Ventilate the vehicle for a brief period during warm weather, e.g. using the convenience opening feature (Y page 86). This will speed up the cooling process and the desired vehicle interior temperature will be reached more quickly. i The integrated filter can filter out most particles of dust and completely filters out pollen. A clogged filter reduces the amount of air supplied to the vehicle interior. For this reason, you should always observe the interval for replacing the filter, which is specified in the Service Booklet. As it depends on environmental conditions, e.g. heavy air pollution, the interval may be shorter than stated in the Service Booklet. Climate control 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. G Warning 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. Dual-zone automatic climate control/multizone automatic climate control15 controls the temperature and the humidity of the vehicle interior and filters out undesirable substances from the air. Dual-zone automatic climate control/multizone automatic climate control15 is only operational when the engine is running16. Optimum operation is only achieved when you drive with the side windows and tilt/ sliding sunroof closed. 15 For 16 The Canada only. "residual heat" function can only be switched on/off when the ignition is switched off.