2011 Mercedes R-Class Owner's Manual - Page 141

Operating climate control systems Activating/deactivating the rearcompartment climate control using the front control panel (dual-zone automatic climate control) X 139 Activating/deactivating the rearcompartment climate control using the rear control panel (multi-zone automatic climate control) X Turn the key to position 2 in the ignition lock. X To activate/deactivate: press the ± button (Y page 133). The indicator lamp in the ± button lights up or goes out. For USA only: X Turn the key to position 2 in the ignition lock. X To activate/deactivate: press the ± button (Y page 134). The indicator lamp in the ± button lights up or goes out. For Canada only: X Turn the key to position 2 in the ignition lock. X To activate: press the Y button (Y page 134). ON and MODE are shown in the multi-zone automatic climate control display behind the Y symbol. The MODE display goes out after three seconds. The display switches back to the standard display. X To deactivate: press the Y button (Y page 134). MODE is shown in the display behind the Y symbol. X Press the ^ button (Y page 134). OFF is shown in the display behind the Y symbol. Switching cooling with air dehumidification on/off Important information The cooling with air dehumidification function is only available when the engine is running. The air inside the vehicle is cooled and dehumidified according to the temperature selected. G Warning If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and others. Condensation may drip from the underside of the vehicle when automatic climate control is in cooling mode. This is normal and not a sign that there is a malfunction. i The cooling with air dehumidification function uses refrigerant R134a. This coolant does not contain chlorofluorocarbons, and therefore does not damage the ozone layer. Z Climate control Activating/deactivating the rearcompartment climate control using the front control panel (multi-zone automatic climate control) Turn the key to position 2 in the ignition lock. X Activate multi-zone automatic climate control with the front control panel. X To activate: press the à button. The indicator lamp in the à button lights up. X To deactivate: press the ^ button. The indicator lamp in the ^ button lights up.