87 Telephone*
Important notes
Please read chapter “Telephone*” be
-
fore attempting to operate your tele
-
phone.
Always drive with extreme caution
when operating the telephone hands-
free.
For safety reasons, the mobile tele
-
phone handset should not be used to
place or receive a call while driving.
If the signal is very weak (display in the
status bar):
Wait until reception improves before
placing a call.
Close the windows and reduce all ex
-
ternal noise as much as possible when
using hands-free operation.
Make sure that the air vents are not
pointed in the direction of the micro
-
phones located in the overhead control
panel near the rear view mirror. Adjust
air vents and/or reduce blower speed
if necessary.
A brief disconnection from the cellular
network is not a malfunction, as this
can occur when the network switches
areas. The phone automatically at
-
tempts to again sign on with a network.
If the message
Enter
unlock
code
is
displayed, enter the unlock code
( page
91)
. Only then will you be able
to use all the telephone functions. You will still be able to make 911 emer
-
gency calls
( page
89)
if the tele
-
phone is locked.
iThis Operator's Manual describes op
-
eration of the telephone using the
COMAND control unit and the multi
-
function steering wheel. Unless other
-
wise specified, the descriptions and
the illustrated displays refer to the
COMAND control unit. Operation of the cellular phone is ex
-
plained in a separate operation guide.!Radio transmitters, such as a portable
telephone or a citizens band unit,
should only be used inside the vehicle if
they are connected to a separate exte
-
rior antenna approved by Mercedes-
Benz.
