Page 132 of 400

132 Controls in detailControl system
The delayed shut-off feature is 
deactivated. It will reactivate as soon 
as you reinsert the SmartKey in the 
starter switch.
Interior lighting delayed shut-off
Use this function to set whether and for 
how long you would like the interior 
lighting to remain lit during darkness after 
the SmartKey is removed from the starter 
switch.
Move the selection marker with 
theæ orç button to the LIGHTING 
submenu.
Press buttonj ork repeatedly 
until you see this message in the 
display: 
INT. LIGHTING DELAYED 
SHUT-OFF.The selection marker is on the current 
setting.
Pressæ orç to select the 
desired lamp-on time period.
You can select:
0 s
, the delayed shut-off feature is 
deactivated
5 s,
 10 s
, 15 s
 or 
20 s
, the delayed 
shut-off feature is activatedVehicle submenu
Access the 
VEHICLE
 submenu via the 
SETTINGS
 menu. Use the 
VEHICLE
 submenu 
to make general vehicle settings. The 
following functions are available:
Setting station selection mode
Use the 
PRESS BUTTON IN AUDIO MODE 
function to select the manual or memory 
station selection mode for the radio 
(page 119).
Move the selection marker with 
theæ orç button to the VEHICLE
 submenu.
Function
Page
Set station selection mode 
(radio)
132
Set automatic locking
133
 
     
        
        Page 138 of 400

138 Controls in detailControl systemCall up range (distance to empty)
Press buttonÿ orè repeatedly 
until you see the first function of the 
Trip computer menu.
Press buttonj ork repeatedly 
until you see this message in the 
display: 
RANGE
.
In the display you will see the 
calculated range based on the current 
fuel tank level.
TEL menu*
You can use the functions in the 
TEL
 menu 
to operate your telephone, provided it is 
connected to a hands-free system and 
switched on.
Switch on the telephone and 
COMAND*.
Press buttonÿ orè on the 
steering wheel repeatedly until you see 
the 
TEL
 menu in the display.
Warning!
G
A driver’s attention to the road must always 
be his/her primary focus when driving. For 
your safety and the safety of others, we 
recommend that you pull over to a safe 
location and stop before placing or taking a 
telephone call. If you choose to use the 
telephone while driving, please use the 
hands-free device and only use the 
telephone when weather, road and traffic 
conditions permit.
Some jurisdictions prohibit the driver from 
using a cellular telephone while driving a 
vehicle.
Bear in mind that at a speed of just 30 mph 
(approximately 50 km/h), your vehicle is 
covering a distance of approximately 
44 feet (approximately 13.5 m) every 
second.
Never operate radio transmitters equipped 
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna) 
from inside the vehicle while the engine is 
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, 
possibly resulting in an accident and 
personal injury. 
     
        
        Page 173 of 400

173 Controls in detail
Audio system
Audio system
Audio and telephone, operation
These instructions are intended to help 
you become familiar with your 
Mercedes-Benz audio system. They con-
tain useful tips and a detailed description 
of the user functions.
Operating safety
Warning!
G
In order to avoid distraction which could 
lead to an accident, the driver should enter 
system settings with the vehicle at a stand-
still and operate the system only when road 
and traffic conditions permit. Always pay full 
attention to traffic conditions first before 
operating system controls while driving.
Bear in mind that at a speed of just 30 mph 
(approximately 50 km/h), your car is cover-
ing a distance of 50 feet (approximately 
14 m) every second.
Warning!
G
Any alterations made to electronic compo-
nents can cause malfunctions.
The radio, amplifier, CD changer*, satellite 
radio*, telephone* and voice control sys-
tem* are interconnected. When one of the 
components is not operational or has not 
been removed/replaced properly, the func-
tion of other components may be impaired.
This condition might seriously impair the 
operating safety of your vehicle.
We recommend that you have any service 
work on electronic components carried out 
by an authorized Mercedes-Benz Center. 
     
        
        Page 175 of 400
175 Controls in detail
Audio system
Item
Page
1
CD mode selector
189
2
Manual tuning
(radio)
179
Fast forward/reverse 
(cassette, CD)
188,
192
Speed dialing memory 
(telephone*)
197
3
Radio mode selector
179
4
Display panelCassette compartment 
behind display panel
Item
Page
5
Alpha-numeric keypadBand selection, 
station buttons (radio)
179
CD selection (CD)
191
Telephone number entry, 
retrieving speed dialing 
memory (telephone)
194
6
Scanning (radio, cassette, 
CD)
181,
188,
192
7
Function button
180
8
Light-emitting diode
Item
Page
9
Function keys
a
Cassette eject
187
b
Cassette mode selector
186
c
Telephone* mode selector
193
d
Seek tuning (radio)
180
Track search (cassette, 
CD)
187,
192
Speed dialing memory
(telephone)
197
e
On/off
176
Volume
176 
     
        
        Page 176 of 400

176 Controls in detailAudio systemButton and soft key operation
In these instructions, the alpha-numeric 
keypad (right side of radio panel) and the 
function buttons (left side of radio panel) 
are referred to as “buttons”. The four keys 
below the display panel are referred to as 
“soft keys”.
Operation
Switching on/off
Switching on:
Turn SmartKey in starter switch to 
position1 or2 .
or
Turn control knoba.
Switching off:
Remove SmartKey from starter switch.
or
Turn control knoba.Adjusting the volume
Turn control knoba.
The volume will increase or decrease 
depending on the direction turned.
Adjusting audio functions
Press the AUD key to call up the bass, tre-
ble, balance and fader functions in the var-
ious operating modes. Settings for bass 
and treble are stored separately for the AM 
and FM frequency bands, satellite radio 
(SAT) mode, cassette mode and CD mode.
!Do not press directly on the display 
face. Otherwise, the display will be 
damaged.
iIf the radio is switched on without the 
SmartKey in the starter switch, it will 
automatically switch off again after ap-
prox. 30 minutes.
iThe volume setting can be selected 
separately for the telephone*, audio 
system and voice control system*. 
     
        
        Page 179 of 400

179 Controls in detail
Audio system
You can select from among the 
following settings:
DRV
: The tone level is set to the 
Driver position; sound is directed 
toward the passengers.
SP: The tone level is set for Speech, 
optimizing the sound for the spoken 
word.
AMB
: The tone level is set for 
Ambience, producing a 
three-dimensional sound.
OFF
: The audio system sound 
selection is turned off.
Telephone* muting
If a telephone has been installed in the 
vehicle, the radio will switch to telephone 
mode when a call is incoming. The current 
audio source is muted.
Radio operation
Selecting radio mode
Pressb button.
You can now receive radio stations 
over the analog FM, AM or WB station 
frequencies or you can receive chan-
nels digitally via satellite radio (SAT)*.
Analog station frequencies
Selecting the band
You can select from among FM, AM or WB 
frequency bands.
Weather band (
page 182).
Press FM, AM or WB key repeatedly un-
til desired band has been selected.
The FM, AM and WB frequency bands 
are called up one after the other.
The frequency band currently selected 
appears in the upper left-hand corner 
of the display.
Selecting a station
The following options are available for 
selecting a station:
Direct frequency band input 
(page 180)
Manual tuning (
page 180)
Automatic seek tuning (
page 180)
Scan tuning (
page 181)
Preset buttons (
page 181)
Automatic station memory (Autostore) 
(page 181)
iFM frequency band:
FM 87.7......107.9 MHz
AM frequency band:
MW (medium wave) 530......1 710 KHz 
     
        
        Page 180 of 400
180 Controls in detailAudio systemDirect frequency input
Select the desired frequency band.
Press“ button.
Enter desired frequency using 
buttons4 toM.Manual tuning
Select the desired frequency band.
Press and hold either thed or 
cbutton until the desired 
frequency is reached.
Step-by-step station tuning takes place 
in ascending or descending order of 
frequency. The first three tuning steps 
will take place without muting. After-
wards, the radio will be muted and 
highspeed tuning will take place until 
the button is released.Automatic seek tuning
Select the desired frequency band.
Press either thef or ebutton.
The radio will tune to the next higher or 
next lower receivable frequency.
iYou can only enter frequencies within 
the respective waveband.
If a button is not pressed within four 
seconds, the radio will return to the   
station last tuned to. 
     
        
        Page 181 of 400

181 Controls in detail
Audio system
Scan tuning
Starting scan tuning
Select desired frequency band.
Press2 button.SC will appear on the display. The 
radio briefly tunes in all receivable 
stations on the band selected. The 
first scan cycle will tune in only the 
stations with a strong signal. The 
second scan cycle will tune in every 
receivable station.
Ending scan tuning
Press2 button ord, c, 
f or ebutton.SC disappears from the display.Manual station memory (Presets)
You can store ten AM and ten FM stations.
Storing stations
Tune in the desired station.
Press and hold desired station 
button4 toM until a brief 
signal tone is heard.
The frequency is stored on the 
selected station button.
The frequency band and station 
button number are shown in the up-
per left-hand corner of the display.
Retrieving a station from memory
Press desired station button4 
toM.Automatic station memory (Autostore)
The Autostore memory function provides 
an additional memory level. The station 
memory for manually stored stations is not 
overwritten.
Calling up Autostore memory level
Briefly press the
AS key.
AS is highlighted in the display.
The radio finds the ten stations with 
the strongest signals. These 
stations are stored on the station 
buttons4 toM in order of 
signal strength.
Retrieving a station from memory
Press desired station button4 
toM.
Leaving the Autostore memory level
Press the
AS key.
The highlighted 
AS in the display 
disappears.