2006 Mercedes C-Class Owner's Manual - Page 239

Controls in detail Audio system 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. Placing a "911" emergency call using audio head unit with the phone unlocked Press h button to switch to telephone operation. Enter 911 using the number keypad on the audio head unit. Press s button for dialing to begin. DIALING 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 while the telephone establishes the connection. Wait until the emergency call center answers, then describe the emergency. while the telephone establishes the connection. Wait until the emergency call center answers, then describe the emergency. i If no SIM card is in the mobile phone, NO SERVICE appears in the audio display. In that case, you only can make an emergency call on the mobile phone itself, without the use of the head unit. 238