2003 Mercedes CLK-Class Owner's Manual - Page 89

Controls in detail Locking and unlocking In order to start the engine with the SmartKey with KEYLESS-GO: the SmartKey with KEYLESS-GO must be located in the vehicle all the doors must be closed If you have started the engine with the KEYLESS-GO start/stop button, you can only turn it off again with this button, even if you have put the key in the starter switch in the meantime. This does not apply if, after starting, the selector lever is still in position P. The SmartKey will then have priority over the KEYLESS-GO function and the vehicle's electrical system will operate according to the position of the key in the starter switch, even stopping the engine. If the SmartKey with KEYLESS-GO 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 SmartKey with KEYLESS-GO is removed from the vehicle while the ignition is switched on (e.g. if passenger exits the vehicle with the key), the message Key not recognized! will appear in the multifunction display. Find the key 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 SmartKey with KEYLESS-GO that is left inside the vehicle. If you leave the card behind when exiting and locking the vehicle, the message Key recognized 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 if neither door nor trunk is opened. i The vehicle could inadvertently unlock if the SmartKey with KEYLESS-GO 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. 89