Page 195 of 442

193 Controls in detail
Audio system
Manual tuning
Select desired waveband.
Press S or Tbutton for approx. 
three seconds.
Press button repeatedly until desired 
frequency has been reached.
Step-by-step station tuning takes place 
in ascending or descending order. Each 
time the button is pressed, the radio 
tunes further by 0.2 MHz. During 
manual tuning, the radio is muted.Automatic seek tuning
Select desired waveband.
Press S or T button briefly.
The radio will tune to the next highest 
or next lowest receivable frequency.Scan search
Starting scan search
Select desired waveband.
Press 
SC soft key.
SC will appear in the display. The 
radio briefly tunes in all receivable 
stations on the waveband selected.
iYou can only enter frequencies within 
the respective waveband.
If a button is not pressed within 
four seconds, the radio will return to 
the last station tuned.
iIf no station is received after two 
consecutive scans of the complete 
frequency range, then the scan stops 
at the frequency from which it began. 
     
        
        Page 196 of 442
194 Controls in detailAudio system
Ending scan search
Press 
SC soft key or S or T.
The station last played will be 
selected and 
SC disappears from 
the display.
Station memory
You can store ten AM and ten FM stations 
in the memory.
Storing stations
Tune in desired station.
Press and hold desired station 
button1 to R until a brief 
signal tone is heard.
The frequency is stored on the 
selected station button.
Calling up stations
Press desired station button1 
to R briefly.
Autostore – automatic station memory
The Autostore memory function provides 
an additional memory level. The station 
memory for manually stored stations is not 
overwritten.
Calling up Autostore memory level and 
storing stations
Press 
AS soft key briefly.
The radio switches to the Autostore 
memory level. 
AS and 
SEARCH
 
appear in the display and the radio 
finds the ten stations with the 
strongest signals. These stations 
are stored on the station 
buttons1 to R in order of 
signal strength. 
     
        
        Page 197 of 442

195 Controls in detail
Audio system
Calling up stations
Press desired station button1 
to R.
Leaving the Autostore memory level
Press 
FM or 
AM
soft key briefly.
Interrupting radio mode
The radio mode is interrupted by an 
incoming call on the telephone* 
(
page 213).
Mute on
Press U button.
The radio mode is interrupted and MUTED
 appears in the display.
Mute off
Press U button.
The radio mode is again active.
Weather band
Press 
WB soft key.
The weather band station last received 
is tuned in.Selecting a weather band station 
directly
Select desired weather band station 
with buttons 1 to 7.
If a station cannot be tuned in, a search 
is automatically started.
Search
Press S or T button to tune in 
the next receivable weather band 
station.iIf no weather band station is received 
after three consecutive scans of the 
complete frequency range, then the 
scan stops at the channel with which it 
began and 
NO WB FOUND
 appears in the 
display.
If this happens, switch back to 
standard radio mode. 
     
        
        Page 198 of 442

196 Controls in detailAudio systemScan search
Starting scan search
Press 
SC soft key.
SC will appear in the display. The 
radio briefly tunes in all receivable 
weather band stations.
Ending scan search
Press 
SC soft key or S or T.
The weather band station last 
played will be selected and 
SC 
disappears from the display.Introduction to satellite radio* 
(USA only)
SIRIUS satellite radio provides 100 chan-
nels of digital-quality radio, among others 
music, sports, news, and entertainment, 
free of commercials. SIRIUS satellite radio 
uses a fleet of high-power satellites to 
broadcast 24 hours per day, coast to 
coast.
This diverse, satellite-delivered program-
ming is available for a monthly subscrip-
tion fee.
For more information call the SIRIUS 
Service Center (
page 201), or contact 
www.siriusradio.com
iAdditional satellite radio equipment 
and a subscription to a satellite radio 
service provider are required for the 
satellite radio operation described 
here. Feature description is based on 
preliminary information available at 
time of printing. 
iAt time of printing, no date for the avail-
ability of optional equipment required 
for satellite radio operation had been 
set.
Contact an authorized Mercedes-Benz 
Center for details and availability for 
your vehicle.
Note that categories and channels 
shown in illustrations are dependent on 
programming content delivered by the 
service provider. Programming content 
is subject to change. Therefore, 
channels and categories shown in 
illustrations and descriptions 
contained in this manual may differ 
from the channels and categories 
delivered by the service provider. 
     
        
        Page 199 of 442

197 Controls in detail
Audio system
Program categories
The channels are categorized. Categories 
allow you to tune to stations broadcasting 
a certain type of program (category mode) 
(page 199).Calling up the SAT main menu
Press 
SAT
 soft key.
SAT
 is displayed in the upper left-hand 
corner of the display.
Prior to activation of the satellite radio 
service (
page 197).
After activation of satellite radio 
service (page 197).
Prior to activation of the satellite radio 
service
The telephone number of the SIRIUS 
Service Center (888-539-7474) is 
displayed.
Press 
ESN
 soft key.
The twelve-digit electronic serial 
number (ESN) of the SAT tuner* 
installed in your vehicle is displayed. 
This information is required to call the 
SIRIUS Service Center for an activation 
request.
After activation of the satellite radio 
service
The satellite radio main menu appears.
The radio station selected last is audible, 
provided it can be received.
iSatellite radio service may be unavail-
able or interrupted from time to time 
for a variety of reasons, such as envi-
ronmental or topographic conditions 
and other things beyond the service 
provider’s or our control. Service might 
also not be available in certain places 
(e.g., in tunnels, parking garages, or 
within or next to buildings) or near 
other technologies.
iCredit card information may also be 
required for your application.
The activation process takes approxi-
mately five to ten minutes after calling 
the SIRIUS Service Center. 
     
        
        Page 200 of 442

198 Controls in detailAudio systemThe first channel 001 is called up and the 
PTY system changes to All categories.
If no station can be received, 
ACQUIRING
 
appears in the display.
If the Satellite radio service is not 
activated, 
ACQUIRING
 will also appear in the 
radio display and 
NO SAT
 will appear in the 
multifunction display.Selecting a station
The following options are available:
Selecting a station using the selected 
category (
page 199),
Tuning via station presets 
(page 198),
Tuning via scan search (
page 200).
Tuning via manual channel input 
(page 198).
Tuning via the program category list 
(page 199).
Tuning via station presets
Ten satellite radio station presets are 
available.
You can access the presets via number 
keys.Accessing via number keys
Enter number of preset you wish to 
select, e.g. 1.
The radio plays the station stored 
under this number and the PTY function 
changes to the category corresponding 
to the station.
Tuning via manual channel input
Example: tuning in channel 16
iThe system will tune to a default 
station if no station had been selected 
previously. 
     
        
        Page 201 of 442

199 Controls in detail
Audio system
Press *.
Input line appears in the main radio 
menu.
Use number keys to enter desired 
channel within eight seconds, 
e.g.1 6.
The system tunes to channel 16.
The station you have selected begins to 
play.
Tuning via the program category list
The category list contains all currently 
receivable categories of programs. It is 
arranged alphabetically.
Selecting a category
Press 
PTY
 soft key.
The current PTY category of the 
station is displayed.
Press 
<<<
 or 
>>>
 soft key.
This switches between the 
individual categories.
When changing the category, the 
channel selected last in the new 
category becomes audible.The system will automatically switch to 
a station of the selected category if the 
currently selected station is not of the 
selected category. Otherwise, the 
currently selected station remains 
tuned.
Tuning a station within the selected 
category
The channels identified for the 
currently selected category are 
arranged numerically. Only one entry is 
visible at a time.
Press S or T button briefly.
The next station within the category 
is started.
or
Press and hold S or T 
button for approx. three seconds 
until desired station has been 
reached.
iYou can only enter available channel 
numbers. 
     
        
        Page 202 of 442

200 Controls in detailAudio systemTuning via scan search
Scan search is characterized as follows:
Scan search plays a channel for 
approx. eight seconds and then skips 
to the next channel within the current 
category.
Scan search can be terminated 
manually.
Press 
SC soft key.
The search starts. SC appears in the 
display.
Press 
SC soft key again.
The search stops.Obtaining additional text information
Additional text information (artist, title) 
related to the current channel can be 
displayed.
Press 
INF
 soft key.
The title being played is displayed.
Press 
INF
 soft key again.
The name of the artist performing the 
title being played is displayed.Storing stations
Tune in desired station.
Press and hold desired station 
button1 to R until a brief signal 
tone is heard.
The frequency is stored on the selected 
station button.
The radio saves the current station at 
the memory preset selected. The 
memory preset selected appears in the 
status line, e.g. S3.
iIf a button is not pressed within 
four seconds, the radio will return to 
the standard display.
iThere are ten presets available.
An existing entry is overwritten in the 
memory list when a new entry is given.