Page 238 of 498

236 Controls in detailAudio system
Speed dial
If you have stored telephone numbers 
as speed dial numbers in your tele-
phone, you can also enter these with 
buttons 1 to R on the radio 
head unit.
Press desired button 1 to R 
briefly.
Press s button.
The call will be made.
Turbo dial
If you have stored telephone numbers 
as turbo dial numbers in your tele-
phone, you can also enter these with 
buttons 1 to R on the radio 
head unit.
Press desired button 1 to R 
until the call is made.Redial
If the number you have dialed is busy, you 
can again place calls to the last ten tele-
phone numbers dialed using the redial 
function.
Manual redial
Press s button.
The telephone number last dialed 
will appear in the display.
Select desired telephone number 
with button ‚ or ƒ.
The letter 
L and the number of the 
memory position appears in the 
left-hand corner of the display. The 
numbers are stored in the order of 
the calls received.
When you have selected a number, 
press s button.
The call will be made.
iIf you have activated the automatic re-
dial function on your telephone, the 
number of the person being called is 
automatically redialed after a short 
waiting period if there is a busy signal. 
Refer to the separate operating instruc-
tions for the mobile telephone. 
     
        
        Page 239 of 498

237 Controls in detail
Audio system
Accepting an incoming call
If the telephone is active in the background 
(reception symbol is visible in the display), 
the audio source is muted when an incom-
ing call is received. A ringing tone can be 
heard and the caller’s telephone number, 
or the name under which the telephone 
number has been saved in the phone book, 
appears in the display. If the caller’s num-
ber is not transmitted with the call, 
CALL
 
will appear in the display.
Press s button.
The call is accepted.Muting a call
It is possible to mute a call; the caller is 
then no longer able to hear you.
Mute on
Press
MUT
 soft key.
MIC MUTE
 will appear in the display.
Mute off
Press
MUT
 soft key again.
Terminating a call
Press t button.
The current call is terminated and the 
muted audio source becomes active 
again.Talking with two callers at the same 
time
If you wish to receive or place another call 
during an already active call, you can ac-
cept or place the second call and switch 
between the callers or combine them into 
one call. Note that the features described 
here are depending on availability from 
your mobile phone service provider.
Placing/accepting a second call
Place new call by entering tele-
phone number manually.
Press s button.
You are connected to the second 
caller; the first caller is kept on 
hold.
or
 
     
        
        Page 240 of 498

238 Controls in detailAudio system
Press s button to accept a sec-
ond call.
You are connected with the second 
caller; the first caller is kept on hold.
Switching between calls
Press 2 and s buttons.
This switches between the calls. 
The non-active call is kept on hold.
Terminating a call
Press t button.
The current call is terminated. You 
are again connected with the caller 
previously placed on hold.
Combining two calls
Press 3 and s buttons.
The calls are combined into one 
call.
Terminating a combined call
Press t button.
The connection to both callers is 
terminated.
TDMA or CDMA network phones
Using your Mercedes-Benz specified mo-
bile telephone*, a number of functions and 
operating steps can be performed and dis-
played in the audio system display.
Further operating instructions not covered 
here can be found in the operating instruc-
tions for the multifunction steering wheel 
and the mobile telephone*.
If your audio system is set up for telephone 
operation, the t symbol will appear in 
the display.
When you insert your Mercedes-Benz 
specified mobile telephone* into the tele-
phone cradle, you will be prompted to en-
ter your PIN for 30 seconds (
page 239). 
This display disappears when you press 
any button.
When your mobile telephone is inserted 
into the telephone cradle, you will see the 
reception strength in the upper right-hand 
corner of the display.
iYou will be notified of the second call 
acoustically, but you will not see this in 
the display.
 
     
        
        Page 241 of 498

239 Controls in detail
Audio system
Switching on the telephone
Switching on the telephone
Press h button.
If you have programmed an unlock 
code for the telephone, you must now 
enter the code.
Enter code using buttons 1 to 
R.
If necessary, correct number entered 
with the 
CLR
 soft key. Press soft key 
briefly to delete the last digit entered; 
press soft key and hold to delete the 
complete number.
Press 
OK soft key after entering correct 
code.
The telephone is unlocked. If you have 
entered an incorrect code, you must 
enter the correct code.
Switching off the telephone
Press h button for approx. three 
seconds.PROCESSING
 appears in the display until 
the telephone is off. Afterward, 
PHONE 
OFF
 appears in the display.
Adjusting the volume
Turn rotary control of N button dur-
ing a telephone call.
The volume will increase or decrease 
depending on the direction turned.Adjusting sound
Adjust sound during a telephone call. 
Sound adjustment (
page 211).
Placing a call
Entering a telephone number and 
starting the dialing process
Enter desired telephone number using 
buttons 1 to R.
The number can have up to 32 digits, 
but only twelve of these are visible in 
the display.
iThe volume can be adjusted separately 
for telephone mode and audio mode.
 
     
        
        Page 242 of 498

240 Controls in detailAudio system
If necessary, correct number entered 
with the 
CLR
 soft key. Press soft key 
briefly to delete the last digit entered; 
press soft key and hold to delete the 
complete number.
After correct telephone number has 
been entered, press s button.
Phone book
The numbers stored in the phone book of 
the mobile telephone can be called up ei-
ther by name or number.
In addition, incoming calls are stored in the 
phone book.
Searching and calling up phone book 
entries by name
You can access your mobile tele-
phone’s phone book with the audio sys-
tem. You can access both the main 
entries and the sub-entries of your 
phone book.
Press 
MEM
 soft key or press ‚ or 
ƒ.
Press desired numerical key 2 
to 9.
The stored entries are selected ac-
cording to the alphabetical order of 
the initial letters (e.g. for S-Schneider, press button 7 
four times).
or
Press and hold button ‚ or 
ƒ.
The system jumps from one initial 
letter to the next in ascending or 
descending order.
Press and hold button ‚ or 
ƒ until desired initial letter has 
been reached.
or
iIf the telephone number has been 
saved together with a name in the 
phone book, the name will appear in 
the display.
iThis is only possible, however, when 
the call information transmitted in-
cludes the number of the person call-
ing. If the telephone number is not 
transmitted, 
NO NUMBER
 will be stored 
in the phone book.
 
     
        
        Page 243 of 498

241 Controls in detail
Audio system
Press button ‚ or ƒ repeat-
edly until desired entry has been 
reached.
The stored entries are selected in 
alphabetical order with the sub-en-
tries.
When you have selected a number, 
press s button.
The call will be made.
Viewing the telephone number of a 
phone book entry
Search for desired entry.
Press 
NUM
 soft key.
The telephone number of the phone 
book entry appears in the display.
Returning calls received
Press 
MEM
 soft key or press ‚ or 
ƒ.
Press 
RCV
 soft key (received calls).
The number of received calls and 
then the call last received appear 
briefly in the display.
Select desired telephone number 
with button ‚ or ƒ.
The letter 
R and the number of the 
memory position appear in the up-
per left-hand corner of the display. 
The numbers are stored in the order 
of the calls received.
When you have selected a number, 
press s button.
The call will be made.
iSeveral sub-entries can be stored for 
each main entry (name). These entries 
are marked by a corresponding abbre-
viation that appears in the upper 
left-hand corner of the display. The fol-
lowing abbreviations for sub-entries 
are possible:
CEL = Mobile phone
HOM = Home
WOR = Work
FAX = Fax
PAG = Pager
TEL = Main 
     
        
        Page 244 of 498

242 Controls in detailAudio system
Speed dial
If you have stored telephone numbers 
as speed dial numbers in your tele-
phone, you can also enter these with 
buttons 1 to R on the radio unit.
Press desired button 1 to R 
briefly.
Press s button.
The call will be made.
Turbo dial
If you have stored telephone numbers 
as turbo dial numbers in your tele-
phone, you can also enter these with 
buttons 1 to R on the radio unit.
Press desired button 1 to R 
until the call is made.Redial
If the number you have dialed is busy, you 
can again place calls to the last ten tele-
phone numbers dialed using the redial 
function.
Manual redial
Press s button.
The telephone number last dialed 
will appear in the display.
Select desired telephone number 
with button ‚ or ƒ.
The letter 
L and the number of the 
memory position appears in the 
left-hand corner of the display. The 
numbers are stored in the order of 
the calls received.
When you have selected a number, 
press s button.
The call will be made.
iIf you have activated the automatic re-
dial function on your mobile telephone, 
the number of the person being called 
is automatically redialed after a short 
waiting period if there is a busy signal. 
Refer to the separate operating instruc-
tions for the mobile telephone. 
     
        
        Page 245 of 498

243 Controls in detail
Audio system
Accepting an incoming call
If the telephone is active in the background 
(reception symbol is visible in the display), 
the audio source is muted when an incom-
ing call is received. A ringing tone can be 
heard and the caller’s telephone number, 
or the name under which the telephone 
number has been saved in the telephone 
book, appears in the display. If the caller’s 
number is not relayed, 
CALL
 will appear in 
the display.
Press s button.
The call is accepted.Muting a call
It is possible to mute a call; the caller is 
then no longer able to hear you.
Mute on
Press
MUT
 soft key.
MIC MUTE
 will appear in the display.
Mute off
Press
MUT
 soft key again.
Terminating a call
Press t button.
The current call is terminated and the 
muted audio source becomes active 
again.Accepting a second incoming call
If you receive another call during an al-
ready active call, you can accept the sec-
ond call and switch between the two.
Accepting a second call
Place new call by entering tele-
phone number manually.
You are connected to the second 
caller; the first caller is kept on hold.
iYou will be notified of the second call 
acoustically, but you will not see this in 
the display.