Page 132 of 474

131 Controls in detail
Control system
Multifunction steering wheel
The displays in the multifunction display
and the settings in the control system are
controlled by the buttons on the multifunc-
tion steering wheel.Pressing any of the buttons on the multi-
function steering wheel will alter what is
shown in the multifunction display.
The information available in the multifunc-
tion display is arranged in menus, each
containing a number of functions or sub-
menus.
The individual functions are then found
within the relevant menu (radio or CD op-
erations under
AUDIO
, for example). These
functions serve to call up relevant informa-
tion or to customize the settings for your
vehicle.
1
Multifunction displayOperating the control system
2
Selecting the submenu or setting
the volume:
Press buttonæup/to increaseçdown/to decrease
3
Telephone*:
Press buttonsto take a calltto end a call
4
Menu systems:
Press buttonèfor next menuÿfor previous menu
5
Moving within a menu:
Press buttonjfor next displaykfor previous display
iC 230 Sport and C 350 Sport:
Steering wheel in these vehicles will
vary from steering wheel shown.
However, multifunction steering wheel
symbols and feature description apply
to Sport models as well.
Page 159 of 474

158 Controls in detailControl systemAnswering a call
When your telephone is ready to receive
calls, you can answer a call at any time. In
the multifunction display you will then see
the message:
Press buttons.
You have answered the call. The
duration of the call appears in the
multifunction display.Ending a call
Press buttont.
You have ended the call. The standby
message appears in the multifunction
display.
Dialing a number from the phone book
If your telephone is ready to receive calls,
you may select and dial a number from the
phone book at any time.
Press buttonÿ orè repeatedly
until the message
TEL
appears in the
multifunction display.
Press buttonj ork.
The control system reads the phone
book which is stored in the telephone.
This may take up to 30 seconds. The
message
Please wait
appears in the
multifunction display.
When the message
Please wait
disappears, the phone book has been
loaded.
Press buttonj ork repeatedly
until the desired name appears in the
multifunction display.
The stored names are displayed in
ascending or descending alphabetical
order.
1Name from the phone book
Page 160 of 474

159 Controls in detail
Control system
Press buttons.
The system dials the selected phone
number.
If the connection is successful, the
name of the party you called and
the duration of the call will appear
in the multifunction display.
If no connection is made, the
control system stores the dialed
number in the redial memory.Redialing
The control system stores the most
recently dialed phone numbers. This
eliminates the need to search through your
entire phone book.
Press buttonÿ orè repeatedly
until the message
TEL
appears in the
multifunction display.
Press buttons.
The first number in the redial memory
appears in the multifunction display.
Press buttonj ork repeatedly
until the desired name appears in the
multifunction display.
Press buttons.
The control system dials the selected
phone number.
iIf you press and hold buttonj
ork for longer than 1 second, the
system scrolls rapidly through the list
of names until you release the button
again.
Cancel the quick search mode by
pressing buttont.
Page 173 of 474

172 Controls in detailGood visibilityActivating exterior rear view mirror
parking position*
Follow these steps to activate the mirror
parking position so that the
passenger-side exterior rear view mirror
will be turned downward during parking
maneuvers to the stored position.
The buttons are located above the exterior
lamp switch.
1Driver’s side exterior rear view mirror
button
2Passenger-side exterior rear view
mirror button
Switch on the ignition (
page 33).
Store a parking position for the passen-
ger-side exterior rear view mirror
(page 117).
Switch the
Mirror set. parking aid
function in the
Convenience
submenu
of the control system to
On
(
page 154).
Press button2 for the passenger-side
exterior rear view mirror.
Place the gear selector lever in reverse
gearR.
The passenger-side exterior rear view
mirror turns downwards to the stored
position.The passenger-side exterior rear view mir-
ror returns to its previously stored driving
position:
10 seconds after you put the gear
selector lever out of positionR
immediately once your vehicle exceeds
a speed of approximately 6 mph
(10 km/h)
immediately when you press button1
for the driver’s side exterior rear view
mirror
Page 203 of 474
202 Controls in detailAudio systemButton and soft key operation
In these instructions, the alphanumeric
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 the unit on/off
Switching on
Turn the SmartKey in the starter switch
to position1 or2.
If the audio system was on as you
removed the SmartKey from the starter
switch, the audio system will
automatically come back on as you
turn the SmartKey to position1 or2.
or
Press M button.
!Do not press directly in the display
face. Otherwise, the display will be
damaged.
iIf the radio is switched on without the
key in the starter switch, it will
automatically switch off again after
approx. 30 minutes.
If your vehicle is equipped with a
telephone, the display may prompt you
to enter your PIN (GSM network) or
code (TDMA or CDMA network).
Page 209 of 474
208 Controls in detailAudio systemCalling up wavebands for radios
with SAT
Press
FM, AM, or
WB soft key repeatedly
until desired waveband has been
selected.
The FM, AM, and WB wavebands are
called up one after another.
The waveband 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 input (
page 208)
Manual tuning (
page 209)
Automatic seek tuning (
page 209)
Scan search (
page 209)
Station memory (
page 209)
Automatic station memory (Autostore)
(page 210)
The station search proceeds in the
following frequency increments:
200 kHz in FM range
10 kHz in AM rangeDirect frequency input
Select desired waveband.
Press * button.
Enter desired frequency with
buttons1to R.iYou can only enter frequencies within
the respective waveband.
If a button is not pressed within
4 seconds, the radio will return to the
last station tuned.
Page 211 of 474

210 Controls in detailAudio systemAutostore – 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.
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 229).
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.
Page 223 of 474
222 Controls in detailAudio systemPlaying tracks
You have the following options:
Audio system with CD changer*:
selecting CDs
Direct track entry
Track skip forward/reverse
Fast forward/reverse
Scan
Random tracks
Repeat trackSelecting CDs in the audio unit with CD
changer*
You can select from among the
inserted CDs with buttons
Rto6.
R = CD player in the audio unit
1to6 = CDs in the
CD changer*
The magazine slot number of the
selected CD appears next to
CD in the
display, and the number of the
currently played track appears next
to
TRACK
.Direct track entry
You can make a direct selection from
among the tracks on a CD.
Press * button.
Enter track number using buttons 1
to R.
The number of the track being played
appears next to
TRACK
in the display.
You can only enter available track
numbers.
iIf there is no CD in the selected
magazine slot,
NO CD
appears in the
display with the corresponding slot
number.