2010 Mercedes C-Class Owner's Manual - Page 173

Audio system i The passcode is any one- to sixteen-digit number, which you can set yourself. For the quality of coding of the connection it is recommend to use a passcode of at least four digits. You must enter the same passcode into the audio system and the device to be authorized. Also refer to the operating instructions of the mobile phone. On the audio system, you can enter the passcode via the digits in the on-screen menu bar or via the telephone keypad in the audio control unit. With the audio controller: X X 171 Enter the same passcode on the mobile phone as you did on the audio system. Entering passcode: Select the digits in the menu bar one by one, by sliding XVY or rotating cVd the audio controller. X Press W to confirm each digit. X Confirming passcode: Select ¬ in the menu bar and press W to confirm. X Deleting digits: Select 2 in the menu bar and briefly press W to delete one digit, or press and hold W to delete all entered digits. X Canceling entry: Press button k in the center console (Y page 141). With keypad on audio control unit: X External authorization If the audio system cannot find your mobile phone, this may be due to special security settings on your mobile phone. In this case, you can check whether, conversely, your mobile phone can find the audio system. The audio system's Bluetooth® device name is "MB Bluetooth". X % Q Tel Q Bluetooth Phones Q Update Q Options Q External Authorization. The message Ready for External Authorization appears. X Start Bluetooth® search procedure on the mobile phone (see mobile phone operating instructions). X Select the audio system ("MB Bluetooth") at your mobile phone. X When prompted to do so, enter the passcode on the mobile phone and then on the audio system. Entering passcode: Press the desired numbers on the keypad. X Confirming passcode: Press button 6 or button m in the audio control unit to confirm. X Deleting digits: Briefly press button 2 in the audio control unit to delete one number, or press and hold button 2 to delete all entered numbers. X Canceling entry: Press button k in the center console (Y page 141). Entering passcode into the mobile phone If a Bluetooth® connection is established successfully, you will be prompted to enter a code into the mobile phone (see mobile phone operating instructions). Displaying details on a mobile phone X X % Q Tel Q Bluetooth Phones. Select the mobile phone from the list. Z Controls in detail i You may need to confirm the authorizing on the mobile phone. Check your mobile phone display. If the message Authorization Procedure Unsuccessful appears on the audio system display, you may have exceeded the preset period for authorization. Repeat the process. The device is authorized. You can now make calls via the audio system hands-free device using the authorized mobile phone.