2003 Mercedes S-Class Owner's Manual - Page 91

Controls in detail Locking and unlocking If the KEYLESS-GO card is positioned farther away from the vehicle (e.g. inside clothing or briefcase) and can no longer be recognized by the system, the vehicle cannot be locked or the engine started via the KEYLESS-GO system. If the KEYLESS-GO card is removed from the vehicle while the ignition is switched on (e.g. if passenger exits the vehicle with the card), the message CHIP CARD NOT RECOGNIZED! will appear in the multifunction display. Find the card or change its present location immediately (e.g. place it on the front passenger seat or insert it in shirt pocket). Remember that the engine can be started by anyone with a KEYLESS-GO card that is left inside the vehicle. If you leave the card behind when exiting and locking the vehicle, the message CHIP CARD DETECTED IN VEHICLE! will appear in the multifunction display. Factory setting Global unlocking Grasp the door handle. The vehicle will lock again automatically within approximately 40 seconds of unlocking if neither door nor trunk is opened. Individual setting If you frequently travel alone, you may wish to reprogram the KEYLESS-GO card so that grasping a door handle only unlocks the driver's door, interior lockable storage compartments and the fuel filler flap. i The vehicle could inadvertently be unlocked if the KEYLESS-GO card is within 3 ft. (1 m) of the vehicle and: the door handle is splashed with water, or you attempt to clean the door handle Global locking Press lock button at door handle ( page 53) or trunk ( page 93). 1 Programming button 2 "Driver's door" symbol 3 "Global unlock" symbol 91