2004 Mercedes C-Class Owner's Manual - Page 79

Safety and Security Anti-theft systems 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 Close the respective element and lock the vehicle again. Disarming the alarm system The alarm system is disarmed when you unlock your vehicle with the SmartKey. The turn signal lamps flash once to indicate that the alarm system is deactivated. Tow-away alarm* Once the tow-away alarm is armed, a visual and audible alarm will be triggered when someone attempts to raise the vehicle. i The alarm system will rearm automatically after approximately 40 seconds if no door or the trunk lid was opened. Canceling the alarm To cancel the alarm: Insert the SmartKey in the starter switch. or Press the Œ or ‹ button on the SmartKey. i The tow-away protection alarm is triggered, for example, if the vehicle is lifted on one side. If the alarm stays on for more than 20 seconds, an emergency call is initiated automatically by the Tele Aid system* ( page 223) provided Tele Aid service was subscribed to and properly activated, and that necessary cellular service and GPS coverage are available. 79