2005 Mercedes SL-Class Owner's Manual - Page 91

Safety and Security Anti-theft systems The alarm system will also be triggered when someone attempts to raise the vehicle unlocking and opening the driver's door with the mechanical key someone opens a door from the inside if the vehicle was locked from the outside with the SmartKey someone opens the trunk lid with the emergency release button Arming the alarm system The alarm system is armed after locking the vehicle with the SmartKey or KEYLESS-GO*. The turn signal lamps flash three times to indicate that the alarm system is activated. The ‹ indicator lamp in the central locking switch ( page 29) begins to flash after arming the alarm system. Disarming the alarm system The alarm system is disarmed when you unlock your vehicle with the SmartKey or KEYLESS-GO*. The turn signal lamps flash once to indicate that the alarm system is deactivated. i The alarm system will rearm automatically again after approximately 40 seconds if no door was opened. i If the turn signal lamps do not flash three times, a door or the trunk lid may not be properly closed. Close the respective element and lock the vehicle again. i If the alarm stays on for more than 30 seconds, a call to the Response Center is initiated automatically by the Tele Aid system ( page 239) provided Tele Aid service was subscribed to and properly activated, and that necessary cellular service and GPS coverage are available. 89