2005 Mercedes C-Class Owner's Manual - Page 223

Controls in detail Audio system Emergency calls "911" The following describes how to dial a "911" emergency call using the audio system head unit when a Mercedes-Benz specified mobile phone* is inserted in the phone cradle*. Unless otherwise specified, the descriptions refer to the audio system head unit. Consult the separate telephone operating instructions that came with your mobile phone* for information on how to place a "911" emergency call on the mobile phone*. Warning! The following conditions must be met for a "911" emergency call: Telephone must be switched on. The corresponding mobile communications network must be available. GSM network phones Placing a "911" emergency call using audio head unit with the phone locked Press h button to switch to telephone operation. PIN? appears in the audio display. i Emergency calls may not be possible with all telephone networks or if certain network services and/or telephone functions are active. Check with your local service providers. If you cannot make an emergency call, you will have to initiate rescue measures yourself. Enter 911 using the number keypad on the audio head unit. Press OK soft key or s button for dialing to begin. DIALING appears in the audio display G while the telephone establishes the connection. Wait until the emergency call center answers, then describe the emergency. The "911" emergency call system is a public service. Using it without due cause is a criminal offense. 221