2005 Mercedes S-Class Owner's Manual - Page 92

Safety and Security Anti-theft systems The button is located on the upper part of the front center console. Switch off the ignition and remove the SmartKey from the starter switch. Press button 2. The indicator lamp 1 in the button comes on briefly. Exit the vehicle and lock it with the SmartKey or (vehicles with KEYLESS-GO*) the lock button at each outside door handle or trunk lid. i You cannot disarm the tow-away alarm if the ignition is switched on. i 1 Indicator lamp 2 Tow-away alarm off button When you unlock your vehicle, the tow-away protection disarms automatically. The tow-away alarm remains disarmed until you lock your vehicle again. 90