2007 Mercedes C-Class Owner's Manual - Page 164

Controls in detail Good visibility ! Make sure that the movement of the rear window sunshade is not restricted by objects on the rear window shelf. Otherwise, the sunshade or the objects could be damaged. Switch on the ignition ( page 32). Always raise or lower the sunshade fully for its support against the window frame. Raising or lowering the sunshade Press switch 1 briefly. The sunshade is raised or lowered completely. Stopping the raising or lowering procedure Press switch 1 again. The sunshade stops. Rear window defroster The rear window defroster uses a large amount of power. To keep the battery drain to a minimum, switch off the defroster as soon as the rear window is clear. The defroster is automatically deactivated after approximately 6 to 17 minutes of operation depending on the outside temperature. Warning! Activating Press button F or 1 in the climate control panel ( page 165) or automatic climate control panel* ( page 175). The indicator lamp on the button comes on. Deactivating Press button F or 1 again. The indicator lamp on the button goes out. G Any accumulation of snow and ice should be removed from the rear window before driving. Visibility could otherwise be impaired, endangering you and others. Switch on the ignition ( page 32). ! If the rear window defroster switches off too soon and the indicator lamp starts flashing, this means that too many electrical consumers are operating simultaneously and there is insufficient voltage in the battery. The system responds automatically by deactivating the rear window defroster. As soon as the battery has sufficient voltage, the rear window defroster automatically turns itself back on. 163