2007 Mercedes CLS-Class Owner's Manual - Page 109

Controls in detail Locking and unlocking Remember that the engine can be started by anyone with a SmartKey with KEYLESS-GO that is left inside the vehicle. Possibility 1: (One SmartKey with KEYLESS-GO in the vehicle, one SmartKey with KEYLESS-GO outside the vehicle): If you leave the SmartKey with KEYLESS-GO behind when exiting and locking the vehicle, no message appears in the multifunction display. Possibility 2: (One SmartKey with KEYLESS-GO in the vehicle, no SmartKey with KEYLESS-GO outside the vehicle): When exiting and trying to lock the vehicle, the message Key still in vehicle appears in the multifunction display. The vehicle will not be locked. Factory setting Global locking Press lock button on an outside door handle ( page 62). With the trunk and all doors closed: All turn signal lamps flash three times. An acoustic signal sounds three times. The locking knobs in the doors move down. The anti-theft alarm system is armed. i When unlocking or locking the vehicle with the SmartKey or with the KEYLESS-GO function an acoustic signal sounds. The acoustic signal is activated at the factory. If you wish to deactivate the feature, or adjust its signal volume, contact an authorized Mercedes-Benz Center. Global unlocking Pull an outside door handle. All turn signal lamps flash once. An acoustic signal sounds once. The locking knobs in the doors move up. The anti-theft alarm system is disarmed. The vehicle will lock again automatically and rearm the anti-theft alarm system within approximately 40 seconds if: neither a door nor the trunk is opened the central locking switch is not activated 108