2010 Mercedes GL-Class Owner's Manual - Page 69
2010 Mercedes GL-Class Manual
Page 69 highlights
Anti-theft systems The SmartKey must be within 3 ft (1 m) of the vehicle. X Press the KEYLESS-GO start/stop button. The SmartKey must be inside the vehicle. 67 X Arming: Lock the vehicle with the SmartKey or with KEYLESS-GO. The turn signal lamps flash three times to indicate that the vehicle is locked. Indicator lamp : flashes to indicate that the alarm system is armed. i If the turn signal lamps do not flash three times, a door or the tailgate may not be properly closed. Close the respective element. X Disarming: Unlock the vehicle with the SmartKey or with KEYLESS-GO. The turn signal lamps flash once to indicate that the alarm system is disarmed. i Unless you open a door or the tailgate within approximately 40 seconds after unlocking the vehicle: RThe vehicle will be locked again. RThe anti-theft alarm system will be rearmed. Canceling the alarm To cancel the alarm, do one of the following: X Insert the SmartKey into the starter switch. X Press button % or & on the SmartKey. In vehicles with KEYLESS-GO: X Grasp an outside door handle. Z Safety and security