2005 Mercedes C-Class Owner's Manual - Page 86

Safety and Security Anti-theft systems Arming the alarm system The indicator lamp is in the switch for the tow-away alarm* in the center console. i If the turn signal lamps do not flash three times, one of the following elements may not be properly closed: a door the trunk lid the hood Close the respective element and lock the vehicle again. Disarming the alarm system Unlock your vehicle with the SmartKey. The turn signal lamps flash once to indicate that the alarm system is deactivated. i The alarm system will rearm automatically after approximately 40 seconds if no door or the trunk lid was opened. Canceling the alarm 1 Indicator lamp Lock the vehicle with the SmartKey. The turn signal lamps flash three times to indicate that the alarm system is activated. Indicator lamp 1 begins to flash after approximately 30 seconds after arming the alarm system. To cancel the alarm: Press the Œ or ‹ button on the SmartKey. or Insert the SmartKey in the starter switch. 84