2003 Mercedes E-Class Owner's Manual - Page 90

Controls in detail Locking and unlocking Important notes on using KEYLESS-GO You can also use the SmartKey with KEYLESS-GO like a normal key ( page 86). You can combine KEYLESS-GO functions with normal key functions (e.g. unlocking with KEYLESS-GO and locking with the remote control). Always carry the SmartKey with KEYLESS-GO with you. Never store the SmartKey with KEYLESS-GO together with: Electronic items such as a cellular phone or another SmartKey with KEYLESS-GO Metallic objects such as coins or metal foil Doing so could impair the function of the KEYLESS-GO system. To lock or unlock the vehicle, the key must be located outside the vehicle within approximately 3 ft. (1 m) of a door or the trunk. 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 Warning! G When leaving the vehicle always remove the key from the starter switch, take the SmartKey with KEYLESS-GO (if so equipped) with you and lock the vehicle. Do not leave children unattended in the vehicle, or with access to an unlocked vehicle. Unsupervised use of vehicle equipment may cause serious personal injury. ! To prevent possible malfunction, avoid exposing the SmartKey with KEYLESS-GO to high levels of electromagnetic radiation. 90