2004 Mercedes C-Class Owner's Manual - Page 230

Controls in detail Useful features Remote door unlock In case you have locked your vehicle unintentionally (e.g. SmartKey inside vehicle), and the reserve SmartKey is not handy: Contact the Mercedes-Benz Response Center at 1-800-756-9018 (in the USA) or 1-888-923-8367 (in Canada). You will be asked to provide your password which you provided when you completed the subscriber agreement. Then return to your vehicle and pull the trunk recessed handle for a minimum of 20 seconds until the SOS button is flashing. The message EMERGENCY CALL - CALL CONNECTED appears in the multifunction display. As an alternative, you may unlock the vehicle via Internet using the ID and password sent to you shortly after the completion of your acquaintance call. The Response Center will then unlock your vehicle with the remote door unlocking feature. Stolen vehicle tracking services In the event your vehicle was stolen: Report the incident to the police. The police will issue a numbered incident report. Pass this number on to the Mercedes-Benz Response Center along with your password issued to you when you subscribed to the service. The Response Center will then attempt to covertly contact the vehicle's Tele Aid system. Once the vehicle is located, the Response Center will contact the local law enforcement and you. The vehicle's location will only be provided to law enforcement. i The remote door unlock feature is available if the relevant cellular phone network is available. The SOS button will flash and the message EMERGENCY CALL - CALL CONNECTED will appear in the multifunction display to indicate receipt of the door unlock command. Once the vehicle is unlocked, a Response Center specialist will attempt to establish voice contact with the vehicle occupants. If the trunk recessed handle was pulled for more than 20 seconds before door unlock authorization was received by the Response Center, you must wait 15 minutes before pulling the trunk recessed handle again. 230