Mercedes-Benz M-Class 2002 COMAND Manual - Manual (Page 70)

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Introduction Audio Telephone Navigation Index System settings
Switching telephone operation on and off
Press , the menu for entering the unlock code will
appear.
Entering the unlock code
Use the number keys ... to enter the unlock-
code. Asterisks will appear in place of the digits in the
input line.
If the input code is correct and the phone is registered
in a network, the phone is ready for use.
Switching off the telephone system
The telephone will change to sleep mode if you switch to
an audio mode, navigation mode or switch off the MCS
system.
P82.85-7139-26
Telephone