2010 Mercedes R-Class Owner's Manual - Page 172

251_AKB; 4; 52, en-US d2ureepe, 2009-03-23T09:22:52+01:00 - Seite 170 Version: 2.11.8.1 170 3-zone automatic climate control i The manually selected air recirculation mode is deactivated automatically: Rafter 5 minutes if the outside temperature is below approximately 41‡ (5†) Rafter 5 minutes if the air conditioning and air-drying are turned off Rafter 30 minutes if the outside temperature is above approximately 41‡ (5†) Residual heat and ventilation With the engine switched off, it is possible to continue to heat or ventilate the interior for up to 30 minutes. This feature makes use of the residual heat produced by the engine. Regardless of the temperature and air volume set on the climate control panel, an interior temperature is aimed at by 72‡ (22†) and the blower runs on low speed to protect the vehicle battery. X X Controls in detail Activating: Switch off the ignition. Press button Á. The indicator lamp in the button comes on. X Deactivating: Press button Á again. The indicator lamp in the button goes out. The residual heat is deactivated automatically Rwhen Rafter Rif Rif the ignition is switched on approximately 30 minutes the battery voltage drops the coolant temperature is too low i How long the system will provide heating depends on the coolant temperature and the battery voltage. 3-zone automatic climate control Control panels USA only