2009 Mercedes SLK-Class Owner's Manual - Page 200

Controls in detail Rear window defroster the selected temperature. The blower will run at speed setting 1 regardless of the air volume control setting. X X Rear window defroster G Warning! Any accumulation of snow and ice should be removed from the rear window before driving. Visibility could otherwise be impaired, endangering you and others. 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 switched off after some time of operation depending on the outside temperature. X Switch on the ignition. X Activating: Switch off the ignition. Press button 913/T14. The indicator lamp in the button comes on. Deactivating: Press button 913/ T14. The indicator lamp in the button goes out. the ignition is switched on ! The rear window defroster cannot be switched on when the retractable hardtop is open. The indicator lamp will start flashing if the hardtop is open. RClose the retractable hardtop. The rear window defroster can then be switched on. X X Switching off: Press button ¯ again. The residual heat is automatically turned off: Rwhen Rafter Rif Rif approximately 30 minutes the battery voltage drops the coolant temperature is too low Switching on: Press button ¯ on the respective climate control panel. The indicator lamp in the button comes on. ! If the rear window defroster switches off too soon and the indicator lamp starts flashing, too many electrical consumers are operating simultaneously and there is insufficient voltage in the battery. The system responds automatically by switching the rear window defroster off. As soon as the battery has sufficient voltage, the rear window defroster switches back on automatically. 13 Vehicles 14 Vehicles with climate control with automatic climate control 198