Page 123 of 474

122 Controls in detailLightingRear fog lamp (driver’s side only)
Switch on the front fog lamps 
(page 121).
Pull out the exterior lamp switch to 
second stop.
The rear fog lamp is switched on.
The yellow indicator lamp† in the 
exterior lamp switch comes on 
(page 118).
Push in the exterior lamp switch to first 
stop.
The rear fog lamp switches off.
The yellow indicator lamp† in the 
exterior lamp switch goes out.
The front fog lamps remain lit.
Combination switch
The combination switch is located on the 
left of the steering column.Combination switch1High beam
2High beam flasherHigh beam
Turn the exterior lamp switch to 
positionB orU (
page 118).
Push the combination switch in 
direction of arrow1 to switch on the 
high beam.
The high beam headlamp indicator 
lampA in the instrument cluster 
comes on (
page 24).
Pull the combination switch in direction 
of arrow2 to its original position to 
switch off the high beam.
The high beam headlamp indicator 
lampA in the instrument cluster 
goes out.
High beam flasher
Pull the combination switch briefly in 
direction of arrow2. 
     
        
        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 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 151 of 474

150 Controls in detailControl system
The selection marker is on the current 
setting.
Press buttonæ orç to select 
manual operation (
Manual
) or daytime 
running lamp mode (
Constant
) 
activated.
With daytime running lamp mode activated 
and the exterior lamp switch in 
positionM orU, the low beam 
headlamps are switched on when the 
engine is running.In low ambient light conditions the 
following lamps will switch on additionally:
Parking lamps
Tail lamps
License plate lamps
Side marker lamps
For more information on the daytime 
running lamp mode, see “Lighting” 
(
page 118).Set locator lighting
With the locator lighting feature activated 
and the exterior lamp switch in 
positionU, the following lamps will 
switch on during darkness when the vehi-
cle is unlocked with the SmartKey:
Parking lamps
Tail lamps
License plate lamps
Side marker lamps
Front fog lamps
The locator lighting switches off when the 
driver’s door is opened.
If you do not open a door after unlocking 
the vehicle with the SmartKey, the lamps 
will switch off automatically after approxi-
mately 40 seconds.
Move the selection marker with 
buttonæ orç to the 
Lighting
 
submenu.
iFor safety reasons, resetting the set-
tings to factory settings (
page 140) 
while driving will not deactivate the 
daytime running lamp mode.
The following message appears in the 
multifunction display:
Lighting - Cannot be completely 
reset to factory sets. while 
driving.
 
     
        
        Page 152 of 474

151 Controls in detail
Control system
Press buttonj ork repeatedly 
until the message 
Surround lighting
 
appears in the multifunction display.
The selection marker is on the current 
setting.
Press buttonæ orç to switch 
the locator lighting function 
On.
Turn the exterior lamp switch to 
positionU when exiting the vehicle 
(page 118).
The locator lighting feature is 
activated.Set night security illumination 
(Headlamps delayed shut-off)
Use this function to set whether or not the 
exterior lamps illuminate during darkness 
after exiting the vehicle and all doors 
closed.
With the delayed shut-off feature activated 
and the exterior lamp switch in 
positionU before the engine is turned 
off, the following lamps will switch on 
when the engine is turned off and remain 
lit for appriximately 15 seconds:
Parking lamps
Tail lamps
License plate lamps
Side marker lamps
Front fog lamps
If after turning off the engine you do not 
open a door or do not close an opened 
door, the lamps will automatically switch 
off after 60 seconds.
Move the selection marker with 
buttonæ orç to the 
Lighting 
submenu.
Press buttonj ork repeatedly 
until the message 
Hdlamp delay off
 
appears in the multifunction display.
The selection marker is on the current 
setting.
iYou can reactivate this function within 
10 minutes by opening a door.
 
     
        
        Page 153 of 474

152 Controls in detailControl system
Press buttonæ orç to switch 
the delayed shut-off feature 
off
 or 
on.
Turn the exterior lamp switch to 
positionU before turning off the 
engine (
page 118).
The headlamps delayed shut-off 
feature is activated.
You can temporarily deactivate the 
delayed shut-off feature:
Before exiting the vehicle, turn the 
SmartKey in the starter switch to 
position0.
Then turn it to position2 and back to 
position0.
The delayed shut-off feature is 
deactivated. It will reactivate as soon 
as you reinsert the SmartKey in the 
starter switch.Set interior lighting delayed shut-off
Use this function to set whether or not the 
interior lighting to remains lit during dark-
ness for appriximately 10 seconds after 
you have removed the SmartKey from the 
starter switch.
Move the selection marker with 
buttonæ orç to the 
Lighting 
submenu.
Press buttonj ork repeatedly 
until the message 
Int. light delay 
off
 appears in the multifunction 
display.
The selection marker is on the current 
setting.
Press buttonæ orç to switch 
the delayed shut-off feature 
off
 or 
on.
Vehicle submenu
Access the 
Vehicle
 submenu via the 
Settings
 menu. Use the 
Vehicle
 submenu 
to make general vehicle settings.
The following function is available:
Set automatic locking
Use this function to activate or deactivate 
the automatic central locking. With the 
automatic central locking system 
activated, the vehicle is centrally locked at 
vehicle speeds of approximately 9 mph 
(15 km/h).
Move the selection marker with 
buttonæ orç to the 
Vehicle
 
submenu.
Function
Page
Set automatic locking
152
 
     
        
        Page 171 of 474
170 Controls in detailGood visibilityFor information on the windshield wipers, 
see “Windshield wipers” (
page 53).
Headlamp cleaning system*
The button is located on the left side of the 
dashboard.
1Headlamp washer button
Switch on the ignition (
page 33). 
Press button 1.
The headlamps are cleaned with a 
high-pressure water jet.For information on filling up the washer 
reservoir, see “Windshield washer system 
and headlamp cleaning system*” 
(
page 303).
Rear view mirrors
For more information on setting the rear 
view mirrors, see “Mirrors” (
page 43).
Interior rear view mirror, 
antiglare position
1Lever
Tilt the mirror to the antiglare night 
position by moving lever1 towards 
the windshield.
The interior rear view mirror is dimmed.
iThe headlamps will automatically be 
cleaned when you have
switched on the headlamps
and
operated the windshield wipers 
with windshield washer fluid 
15 times
When you switch off the ignition, the 
counter resets. 
     
        
        Page 172 of 474

171 Controls in detail
Good visibility
Auto-dimming rear view mirrors*
The reflection brightness of the exterior 
rear view mirror on the driver’s side and 
the interior rear view mirror will respond 
automatically to glare when
the ignition is switched on
and
incoming light from headlamps falls on 
the sensor in the interior rear view 
mirror.
The rear view mirror will not react if
reverse gearR is engaged
the interior lighting is turned on
Warning!
G
The auto-dimming function does not react if 
incoming light is not aimed directly at 
sensors in the interior rear view mirror.
The interior rear view mirror and the exterior 
rear view mirror on the driver’s side do not 
react, for example, if the rear window 
sunshade* is in raised position.
Glare can endanger you and others.Warning!
G
In case of an accident, liquid electrolyte may 
escape from the mirror housing if the mirror 
glass breaks.
Electrolyte has an irritating effect. Do not 
allow the liquid to come into contact with 
eyes, skin, clothing, or respiratory system. 
In case it does, immediately flush affected 
area with water, and seek medical help if 
necessary.
!Electrolyte drops coming into contact 
with the vehicle paint finish can be 
completely removed only while in the 
liquid state and by applying plenty of 
water.Warning!
G
Exercise care when using the passen-
ger-side exterior rear view mirror. The mirror 
surface is convex (outwardly curved surface 
for a wider field of view). Objects in mirror 
are closer than they appear. Check your 
interior rear view mirror or glance over your 
shoulder before changing lanes.