Page 235 of 474

234 Controls in detailAudio system
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 
button‚ orƒ.
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 
upper 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.
Speed dial
If you have stored telephone numbers 
as speed dial numbers in your 
telephone, 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 
telephone, 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.
 
         
        
        
     
        
        Page 236 of 474

235 Controls in detail
Audio system
Redial
If the number you have dialed is busy, you 
can again place calls to the last ten 
telephone 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.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.
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 237 of 474

236 Controls in detailAudio systemMuting 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 
already active call, you can accept the 
second call and switch between the two.
Accepting a second call
Place new call by entering 
telephone number manually.
You are connected to the second 
caller; the first caller is kept on hold.
Switching between calls
Press s button.
This switches between the calls. 
The non-active call is kept on hold.
Terminating a call
Press t button.
The current call is terminated. The 
connection to the caller previously 
kept on hold is also interrupted; 
however, reconnection is indicated 
by an acoustic signal.
iYou will be notified of the second call 
acoustically, but you will not see this in 
the display. 
         
        
        
     
        
        Page 238 of 474

237 Controls in detail
Audio system
Placing a second call
If you wish to place another call during an 
already active call, you can place the 
second call and switch between the callers 
or combine them into one call. Note that 
this feature is dependent on availability 
from your mobile phone service provider. 
Placing a second call
Place a new call by entering 
telephone number manually.
Press s button.
You are connected to the second 
caller; the first caller is kept on 
hold.
Terminating a call
Press t button.
The current call is terminated. The 
connection to the caller previously 
kept on hold is also interrupted; 
however, reconnection is indicated 
by an acoustic signal.
Combining two calls
Press s button.
The calls are combined into one 
call.
Terminating a combined call
Press t button.
The connection to both callers is 
terminated.
Emergency calls “911”
The following describes how to dial a “911” 
emergency call using the audio system 
head unit when a Mercedes-Benz specified 
mobile phone* is inserted in the phone 
cradle*. Unless otherwise specified, the 
descriptions refer to the audio system 
head unit. 
Consult the separate telephone operating 
instructions that came with your mobile 
phone* for information on how to place a 
“911” emergency call on the mobile 
phone*. Warning!
G
The “911” emergency call system is a public 
service. Using it without due cause is a crim-
inal offense. 
         
        
        
     
        
        Page 239 of 474

238 Controls in detailAudio systemThe following conditions must be met for a 
“911” emergency call:
Telephone must be switched on. 
The corresponding mobile communica-
tions network must be available. 
If you cannot make an emergency call, you 
will have to initiate rescue measures 
yourself. GSM network phones
Placing a “911” emergency call using 
audio head unit with the phone locked
Press hbutton to switch to 
telephone operation. PIN?
 appears in the audio display. 
Enter 911 using the number keypad on 
the audio head unit. 
Press 
OK soft key or sbutton 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. Placing a “911” emergency call using 
audio head unit with the phone 
unlocked
Press hbutton to switch to 
telephone operation. 
Enter 911 using the number keypad on 
the audio head unit. 
Press sbutton 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. 
iEmergency 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.
iIf 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.  
         
        
        
     
        
        Page 240 of 474
239 Controls in detail
Audio system
TDMA/CDMA network phones
Placing a “911” emergency call using 
audio head unit with the phone locked
Press hbutton to switch to 
telephone operation. CODE?
 appears in the audio display. 
Enter 911 using the number keypad on 
the audio head unit. 
Press 
OK soft key or sbutton 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. Placing a “911” emergency call using 
audio head unit with the phone 
unlocked
Press hbutton to switch to 
telephone operation. 
Enter 911 using the number keypad on 
the audio head unit. 
Press sbutton 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.  
         
        
        
     
        
        Page 241 of 474

240 Controls in detailPower windowsOpening and closing the windows
The side windows are opened and closed 
electrically. The switches for all the side 
windows are on the driver’s door. The 
switches for the respective windows are 
on the front passenger door and the rear 
doors.
1Left front window
2Right front window
3Right rear window
4Left rear window
5Rear window override switch 
(
page 85)
Warning!
G
When closing the power windows, make 
sure there is no danger of anyone being 
harmed by the closing procedure.
The closing of the door windows can be im-
mediately halted by releasing the switch or, 
if switch was pulled past the resistance 
point and released, by either pressing or 
pulling the respective switch.
If the window encounters an obstruction 
t h a t  b l o c k s  i t s  p a t h  i n  a  c i r c u m s t a n c e  w h e r e  
you pulled the switch past the resistance 
point and released it to close the window, 
the automatic reversal function will stop the 
window and open it slightly.
If the window encounters an obstruction 
that blocks its path in a circumstance where 
you are closing the window by pulling and 
holding the switch, by pressing and holding 
button‹ on the SmartKey, or by press-
ing and holding button, ore on the 
climate control panel, the automatic rever-
sal function will not operate.
When leaving the vehicle, always remove the 
SmartKey from the starter switch, take it 
with you, and lock the vehicle. Do not leave 
children unattended in the vehicle, or with 
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment can cause an 
accident and/or serious personal injury. 
         
        
        
     
        
        Page 242 of 474

241 Controls in detail
Power windows
Switch on the ignition (
page 33).Opening the windows
Press switch1 to4 to the resistance 
point.
The corresponding window will move 
downwards until you release the 
switch.
Closing the windows
Pull switch1 to4 to the resistance 
point.
The corresponding window will move 
upwards until you release the switch.Fully opening the windows 
(Express-open)
Press switch1 to4 past the 
resistance point and release.
The corresponding window opens 
completely.
Fully closing the windows 
(Express-close)
Pull switch1 to4 past the 
resistance point and release.
The corresponding window closes 
completely.
iYou can also open or close the power 
windows using the SmartKey, see 
“Summer opening feature” 
(page 243) and “Convenience clos-
ing feature” (
page 243).
Depending on current position, the win-
dows may also open or close when the 
air recirculation button, in the 
control panel of the climate control 
(
page 177) or automatic climate 
control* (Canada only) (
page 187), 
or the charcoal filter buttone in the 
control panel of the automatic climate 
control* (Canada only) (
page 194) is 
pressed and held.
Warning!
G
If you pull and hold the switch up when 
closing the window, and upward movement 
of the window is blocked by some obstruc-
tion including but not limited to arms, hands, 
fingers, etc., the automatic reversal will not 
operate.