Page 124 of 474

123 Controls in detail
Lighting
Corner-illuminating front fog lamps*
(C 280, C 350 4MATIC: with Bi-Xenon* headlamps)
The corner-illuminating front fog lamps im-
prove illumination of the road into which
you are turning.
The corner-illuminating front fog lamps will
operate with the engine running and with
the exterior lamp switch in
positionB (
page 118)
or
the exterior lamp switch in
positionU (
page 118)
or
the daytime running lamp mode
activated (
page 120)Driving forward
Switching on corner-illuminating front
fog lamps
Depending on whether you are turning
left or right, switch on the left or right
turn signal (
page 53).
The respective front fog lamp comes on
and illuminates the road onto which
you are turning.
iCorner-illuminating front fog lamps will
only come on in low ambient lighting
conditions.
The corner-illuminating front fog lamps
function is not available at a vehicle
speed above 25 mph (40 km/h).
iThe corner-illuminating front fog lamps
will come on automatically depending
on the steering angle, even if you did
not switch on either turn signal. If the
corner-illuminating front fog lamps
came on automatically, they will also
go out automatically depending on the
steering angle.
Page 125 of 474

124 Controls in detailLightingSwitching off corner-illuminating front
fog lamps
The combination switch for the turn signal
resets automatically after major steering
wheel movements. This will switch off the
corner-illuminating front fog lamps if they
were activated by switching on the left or
right turn signal.
If the turn signal should stay on after mak-
ing the turn, the turn signal and cornering
fog lamp can be switched off by returning
the combination switch to its original posi-
tion.Driving rearward
Switching on corner-illuminating front
fog lamps
Place the gear selector lever (manual
transmission: gearshift lever) in
positionR.
The inverse front fog lamp comes on
automatically depending on the
steering direction and steering angle.
Switching off corner-illuminating front
fog lamps
Place the gear selector lever (manual
transmission: gearshift lever) out of
positionR.
The respective front fog lamp goes out.
Hazard warning flasher
The hazard warning flasher can be
switched on at all times, even with the
SmartKey removed from the starter
switch.
The hazard warning flasher switches on
automatically when an air bag deploys.
The hazard warning flasher switch is
located on the upper part of the center
console.
1Hazard warning flasher switch
Page 126 of 474

125 Controls in detail
Lighting
Switching on hazard warning flasher
Press hazard warning flasher
switch1.
All turn signals are flashing.
Switching off hazard warning flasher
Press hazard warning flasher switch1
again.
Interior lighting
The controls are located in the overhead
control panel.
1Rear interior lights on/off
2Right front reading lamp on/off
3Rocker switch for automatic control
system
4Left front reading lamp on/offAutomatic control
Activating
Press rocker switch3 to center
position.
Interior lamps are switched on in
darkness, when you
unlock the vehicle
open a door
remove the SmartKey from the
starter switch
The interior lamps are switched off after a
preset time, see “Set interior lighting de-
layed shut-off” (
page 152).
iWith the hazard warning flasher
activated and the combination switch
set for either left or right turn, only the
respective turn signals will operate
when the SmartKey is in the starter
switch position1 or 2.iIf the hazard warning flasher has been
activated automatically, press hazard
warning flasher switch1 once to
switch it off.
iLeaving an interior light switch in the
ON position for extended periods of
time with the engine turned off could
result in a discharged battery.
iIf the door remains open, the interior
lamps switch off automatically after
approximately 5 minutes, when the
SmartKey is removed or in starter
switch position0.
Page 127 of 474

126 Controls in detailLightingDeactivating
Press the= symbol on rocker
switch3.
The interior lighting remains switched
off, even when you
unlock the vehicle
open a door
remove the SmartKey from the
starter switch
Manual control
Switching all front interior lights on and
off
Press theW symbol on rocker
switch3.
The front interior lights come on.
Press rocker switch3 to center
position to activate the automatic
control.Switching rear interior lights on and off
Press buttonV.
The lights in the rear passenger
compartment come on.
Press buttonV again.
The lights in the rear passenger
compartment go out.
Switching front reading lamp on and off
Press right or left buttonX.
The right reading lamp comes on.
Press right or left buttonX again.
The right reading lamp goes out.
Door entry lamps
The appropriate door entry lamp switches
on if a door is opened in darkness and if
the interior lighting is switched to auto-
matic function.
The entry lamp switches off automatically
when the door is closed.Trunk lamp
The trunk lamp switches on if the trunk is
opened.
If you leave the trunk open for an extended
period of time, the trunk lamp will switch
off automatically after approximately
10 minutes.
iIf you turn the SmartKey in the starter
switch to position0 and switch off the
exterior headlamps, the door entry
lamps will remain lit for approximately
5minutes.
Page 128 of 474
127 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 (
page 33)
press reset button1
switch on the exterior lighting
You can change the instrument cluster
settings in the Instrument cluster submenu
of the control system (
page 143).
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 135 of 474

134 Controls in detailControl systemMenus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Menu7
Standard
display
AUDIO
NAV*
Vehicle status
message memory
Settings
Trip computer
Telephone*
(page 135)
(page 136)
(page 138)
(page 138)
(page 140)
(page 155)
(page 157)
Commands/submenusRun Flat
Indicator*
(Canada only)
Select radio
station
Show route guid-
ance instructions,
current direction
traveled
Call up vehicle malfunc-
tion, warning and sys-
tem status messages
stored in memory
1
1The vehicle status message memory menu is only displayed if there is a message stored.
Reset to
factory
settings
Fuel consumption
statistics after
start
Load phone
book
Digital speed-
ometer or out-
side temperature
Select satellite
radio station*
(USA only)
Instrument
cluster sub-
menu
Fuel consumption
statistics since
the last reset
Search for
name in
phone book
Call up main-
tenance service
display
Operate
CD player*
Time/Date
submenu
Call up range
Lighting
submenuVehicle
submenuConvenience
submenu
Page 142 of 474
141 Controls in detail
Control system
Submenus in the Settings menu
Press buttonj.
The collection of the submenus
appears in the multifunction display.
Press buttonç.
The selection marker moves to the next
submenu.The submenus are arranged by hierarchy.
Scroll down with buttonç, scroll up
with buttonæ.
With the selection marker on the desired
submenu, use the buttonj to access
the individual functions within that sub-
menu. Once within the submenu, you can
use the button j to move to the next
function or the button k to move to the
previous function within that submenu.
The settings themselves are made with
buttonæ orç.
iThe settings you have changed will not
be reset unless you confirm the action
by pressing the reset button a second
time. After approximately 5 seconds,
the
Settings
menu reappears in the
multifunction display.
For safety reasons, the following
function are not reset while driving:
the
Hdlamp mode
function in the
Lighting
submenu
Page 143 of 474
142 Controls in detailControl systemThe table below shows what settings can
be changed within the various menus. Detailed instructions on making individual
settings can be found on the following
pages.Instrument cluster
Time/Date
Lighting
Vehicle
Convenience
Select speedometer
display mode
Time synchronization with head
unit*
Set daytime running lamp
mode (USA only)
Set automatic lock-
ing
Activate easy-entry/exit
feature
Select language
Set time (hours)
Set locator lighting
Set parking position for
exterior rear view mirror
Select display (speed
display or outside
temperature) for status
indicator
Set time (minutes)
Set night security
illumination
Select automatic time change
(Daylight Saving Time (DST)
summer/Standard time winter)
Set interior lighting de-
layed shut-off
Set date (month)Set date (day)Set date (year)