2007 Mercedes GL-Class Owner's Manual - Page 243

Controls in detail 3-zone automatic climate control* ! If the air conditioning cannot be turned on again, this indicates that the air conditioning is losing refrigerant. The compressor has turned off. Have the air conditioning checked at the nearest authorized Mercedes-Benz Light Truck Center. Activating Adjust the temperature, air volume and air distribution ( page 232). Press button ; ( page 232). The indicator lamp on the button comes on. The driver-side settings are used for all temperature zones. Deactivating Press button ; ( page 232) again. The indicator lamp on the button goes out. 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. Using driver-side settings for all temperature zones You can use the settings of the driver's side, such as temperature, air volume and air distribution, for all temperature zones. These settings only need to be made once and the automatic climate control system will automatically regulate the settings for all temperature zones quickly and comfortably. i How long the system will provide heating depends on the coolant temperature the battery voltage Regardless of the temperature and air volume set on the automatic climate control panel, an interior temperature is aimed at by 72°F (22°C) and the blower runs on low speed to protect the vehicle battery. i If you manually set the temperature, air volume or air distribution for the passenger side or the rear passenger compartment when the MONO setting is active, the MONO setting will be switched off. 242