Page 6 of 442

ContentsSafety and Security........................... 57
Occupant safety................................... 58
Air bags .......................................... 59
Seat belts ....................................... 64
Children in the vehicle .................... 67
Blocking of rear door window
operation ........................................ 75
Panic alarm* ........................................ 76
Activating ....................................... 76
Deactivating ................................... 76
Driving safety systems ......................... 77
ABS ................................................ 77
BAS ................................................ 78
ESP ................................................. 79
Four wheel electronic traction
system (4MATIC) with the ESP ....... 82
Anti-theft systems................................ 83
Immobilizer..................................... 83
Anti-theft alarm system* ................ 83
Tow-away alarm* ........................... 85
Controls in detail............................... 87
Locking and unlocking ......................... 88
SmartKey ....................................... 88
Opening the doors from
the inside ....................................... 92
Opening the trunk .......................... 92
Closing the trunk............................ 94
Trunk lid emergency release .......... 95
Automatic central locking .............. 96
Locking and unlocking from
the inside ....................................... 96
Seats ................................................... 98
Easy-entry/exit feature* ................ 98
Removing and installing front
seat head restraints ....................... 99
Rear seat head restraints ............. 101
Multicontour seats* ..................... 104
Seat heating* ............................... 105
Memory function* ............................. 106
Storing positions into memory ..... 107
Recalling positions from memory . 107
Storing exterior rear view mirror
parking position ........................... 108Lighting ............................................. 109
Exterior lamp switch .................... 109
Combination switch ..................... 113
Hazard warning flasher ................ 114
Interior lighting ............................ 115
Door entry lamps ......................... 116
Trunk lamp ................................... 116
Instrument cluster ............................. 117
Instrument cluster illumination .... 117
Coolant temperature gauge ......... 118
Trip odometer .............................. 119
Tachometer .................................. 119
Outside temperature indicator ..... 119
Control system .................................. 121
Multifunction display.................... 121
Multifunction steering wheel........ 122
Menus .......................................... 124
Standard display menu ................ 126
AUDIO menu ................................ 127
NAV* menu .................................. 130
Vehicle status message memory
menu............................................ 130
Settings menu .............................. 132
Trip computer menu..................... 148
TEL menu* ................................... 150
Page 28 of 442
26 At a glanceMultifunction steering wheel
Item
Page
1
Multifunction display
121
Operating control
system
122
2
Selecting the submenu or
setting the volume:
Press buttonæup/to increaseçdown/to decrease
3
Telephone*:
Press buttonsto take a calltto end a call
Item
Page
4
Menu systems:
Press buttonèfor next menuÿfor previous menu
5
Moving within a menu:
Press buttonjfor next displaykfor previous displayiC 230 Kompressor Sport, and
C320Sport:
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 100 of 442

98 Controls in detailSeatsFor information on seat adjustment, see
“Adjusting” (
page 35).
Easy-entry/exit feature*
This feature allows for easier entry into and
exit from the vehicle.
The easy-entry/exit feature can be
activated or deactivated in the Convenience
submenu of the control
system (
page 146).When exiting the vehicle, with the
easy-entry/exit feature activated and
depending on your selection, the steering
wheel tilts upwards and/or the driver’s
seat moves a few inches to the rear when
you:
remove the SmartKey from the starter
switch,
or
open the driver’s door with the
SmartKey in starter switch position0
or1.
Warning!
G
You must make sure no one can become
trapped or injured by the moving steering
wheel and driver’s seat when the
easy-entry/exit feature is activated.
To cancel seat/steering wheel movement,
do one of the following:
Press seat adjustment switch*
(page 30).
Move steering column stalk*
(page 40).
Press memory position switch*
(page 107).
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Children could open the driver’s door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury.
iIf the current position for the steering
wheel is in the uppermost tilt position,
the steering wheel will no longer be
able to move upward when the
easy-entry/exit feature is activated.
Page 119 of 442
117 Controls in detail
Instrument cluster
Instrument cluster
For a full view illustration of the instrument
cluster, see “At a glance” (
page 24).
1Reset button
The instrument cluster is activated when
you
open a door
switch on ignition
press reset button1
switch on the exterior lamps
You can change the instrument cluster
settings in the Instrument cluster submenu
of the control system (
page 135).
Instrument cluster illumination
Use reset button1 to adjust the
illumination brightness for the instrument
cluster.To brighten illumination
Turn reset button1 clockwise.
The instrument cluster illumination will
brighten.
To dim illumination
Turn reset button1 counterclock-
wise.
The instrument cluster illumination will
dim.
iThe instrument cluster illumination is
dimmed or brightened automatically to
suit ambient light conditions.
The instrument cluster illumination will
also be adjusted automatically when
you switch on the vehicle’s exterior
lamps.
Page 124 of 442

122 Controls in detailControl systemMultifunction 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 Kompressor Sport, and
C320Sport:
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 125 of 442
123 Controls in detail
Control system
It is helpful to think of the menus, and the
functions within each menu, as being
arranged in a circular pattern.
If you press buttonè orÿ
repeatedly, you will pass through each
menu one after the other.
If you press buttonk orj
repeatedly, you will pass through each
function display, one after the other, in
the current menu.In the
Settings
menu, instead of functions
you will find a number of submenus for
calling up and changing settings. For
instructions on using these submenus, see
“Submenus in the Settings menu”
(
page 133).The number of menus available in the sys-
tem depends on which optional equipment
is installed in your vehicle.
The menus are described on the following
pages.
Page 126 of 442
124 Controls in detailControl systemMenusThis is what you will see when you scroll
through the menus.The table on the next page provides an
overview of the individual menus.
Page 127 of 442
125 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Menu7
Standard display
AUDIO
NAV*
Vehicle status
message memory
Settings
Trip computer
Telephone*
(page 126)
(page 127)
(page 130)
(page 130)
(page 132)
(page 148)
(page 150)
Commands/submenusDigital speedometer
or outside tempera-
ture
Select radio
station
Activate route
guidance
Call up vehicle mal-
function, warning
and system status
messages stored in
memory
Reset to factory
settings
Fuel consumption
statistics after
start
Load phone
book
Call up maintenance
service display
Select satellite
radio station*
(USA only)
Instrument clus-
ter submenu
Fuel consumption
statistics since
the last reset
Search for
name in
phone book
Check engine oil
level
Operate the
CD player*
Time/Date
submenu
Call up range
Lighting
submenuVehicle
submenuConvenience
submenu