2005 Mercedes SL-Class Owner's Manual - Page 112

Controls in detail Locking and unlocking i The emergency release button unlocks the trunk while the vehicle is standing still or in motion. Illumination of the emergency release button: The button flashes for 30 minutes after opening the trunk. The button flashes for 60 minutes after closing the trunk. i If the emergency release button is pressed and the vehicle was centrally locked, the exterior lamps will flash and the alarm will sound as the trunk lid opens. To cancel the alarm, do one of the following: With the SmartKey Insert the SmartKey in the starter switch. Press button Œ or ‹ on the SmartKey. With KEYLESS-GO* Grasp the outside door handle. Press the KEYLESS-GO* start/stop button. Automatic central locking The doors and the trunk lid lock automatically when the vehicle is set into motion. You can open a locked door from the inside. Open door only when conditions are safe to do so. i The doors unlock automatically after an accident if the force of the impact exceeds a preset threshold. The vehicle locks automatically when the ignition is switched on and the wheels are turning at vehicle speeds of approximately 9 mph (15 km/h) or more. You could therefore lock yourself out when the vehicle is pushed is on a test stand You can deactivate the automatic locking using the control system ( page 156). i The emergency release button does not open the trunk lid if the vehicle battery is discharged or disconnected. 110