Page 9 of 150
6 Introduction
Symbols
Symbols
You will find the following symbols in these
operating instructions:
* An asterisk identifies optional
equipment. Since the MCS will vary
according to the items ordered with
it, certain descriptions and illustra-
tions may be different.This symbol points to instructions for
you to follow.
A number of these symbols appearing
in succession indicates a multiple-step
procedure.
(
page 7) This symbol tells you where
to look for additional infor-
mation on a subject.
The continuation symbol
marks an interrupted proce-
dure which will be continued
on the next page.
Display Words appearing in the
MCS display are printed in
the type shown here.
WarningG
Warning notices draw your attention to
hazards that may endanger your health or
life, or the health or life of others.
!
Highlights hazards that may result in
damage to your MCS
i
Helpful hints or additional information
you may find useful.
Page 10 of 150

7 Introduction
Operating safety
Operating safety
WarningG
Any alterations made to electronic compo-
nents and the software can cause malfunc-
tions.
The radio, amplifier, CD player*, CD chang-
er*, and telephone* are interconnected.
When one of the components is not opera-
tional or has not been removed/replaced
properly, the function of other components
may be impaired.
This condition might seriously impair the op-
erating safety of your vehicle.
We recommend that you have any service
work on electronic components carried out
by an authorized Mercedes-Benz Center.
WarningG
In order to avoid distraction, which could
lead to an accident, system settings should
be entered with the vehicle at a standstill.
The driver should only operate the system
when traffic conditions permit.
Bear in mind that at a speed of just
30 mph (approximately 50 km/h), your car
is covering a distance of 50 feet (approxi-
mately 14 m) every second.
MCS supplies you with the information to
help you select your route more easily and
guide you conveniently and safely to your
destination. For safety reasons, we encour-
age the driver to stop the vehicle in a safe
place before answering or placing a call, or
consulting the MCS screen to read naviga-
tional maps, instructions, or downloaded in-
formation.
While the navigation system* provides di-
rectional assistance, the driver must remain
focused on safe driving behavior, including
attention to traffic and street signs, and
should utilize the system's audio cues while
driving.
The navigation system* does not supply any
information on stop signs, yield signs, traffic
regulations or traffic safety rules. This al-
ways remains your personal responsibility
when you drive.DVD maps do not cover all ar-
eas nor all routes within an area.
Page 11 of 150
Page 12 of 150
9 At a glance
MCScontrolunit
QuickreferenceMCS
Page 13 of 150
10 At a glance
MCS control unit
MCS control unit
P82.85-9559-31
Page 14 of 150

11 At a glance
MCS control unit
FunctionPage
1Switches the radio oper-
ation on30
2Color display
3Delete the last input, re-
turn to previous screen
4Press to:
Open and close the con-
trol panel
Cassette compartment
and CD/DVD slot are lo-
cated behind control
panel
40,
51
5Press to:
Switch the MCS on and
off
Turn to:
Adjust the volume of an
audio source, or naviga-
tion voice prompt during
active route guidance
announcement.
14
16
FunctionPage
6Radio operation:
Selecting a station
Saving stations manually
CD operation:
Selecting a track or CDs
Telephone:
Entering the unlock code
Entering the telephone
number
34
36
58, 59
72
74
7Joystick:
Activates equipment
functions and submenus
via menu fields
Pressing :
Confirms a selection
8Switches the navigation*
system on
Activates the navigation
menu90
FunctionPage
9Repeats current (last)
voice instruction
10Softkeys
11Ending a call73
12Accepting an incoming
call
Sending a call73
13Switches telephone* op-
eration on72
14Switches info service*
operation on138
15Switches CD operation
on (single CD player*,
CD changer*)56
16Switches tape operation
on44
Page 15 of 150
12 At a glance
MCS control unit
Main menu structure
Main radio display
1Active system/function display field
2Inserted cassette icon
3Inserted navigation DVD or audio CD
icon
4Inserted CD changer icon
5Telephone roaming indicator
6Telephone signal strength meter
7Selected station preset / CD
8Softkey menu Active system / function display field Display screen
System
Display
FM
AM, WB
CD
CHANGER
INFO SER-
VICE
PHONE
TAPE
Roaming in-
dicator
S
R
R (highlight-
ed)Meaning
FM radio band selected
AM radio band or Weather
Band WB selected
Single CD player selected
CD changer selected
Info service selected
Telephone selected
Tape selected
Signal in home network
Roaming
Roaming on non-home
type system
Page 16 of 150
13 At a glance
MCS control unit
Warning messages
Display is too hot
If the display is too hot, the message
“DISPLAY IS TOO HOT...” will brief-
ly appear.
To protect the display from damage, the
light shuts off. As soon as the display
reaches normal operating temperatures, it
turns on automatically.Anti-theft system
If the power supply to the MCS has been
interrupted, the message
“PLEASE EN-
TER SECURITY CODE” will be displayed
the next time the MCS unit is switched on.
Use the number keypad to enter your five
digit security code and press the softkey
“OK” to confirm. The MCS unlocks and
normal operation is enabled.
2
3