Page 110 of 464

110 Controls in detailLightingRear fog lamp (driver’s side only)
Switch on the front fog lamps 
(page 109).
Pull out the exterior lamp switch to sec-
ond stop.
The rear fog lamp switches on.
The yellow indicator lamp† in the 
exterior lamp switch comes on 
(page 106).
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.
1High beam
2High beam flasherHigh beam
Turn the exterior lamp switch to 
positionBorU (
page 106).
Push the combination switch in direc-
tion 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 111 of 464

111 Controls in detail
Lighting
Cornering fog lamps* (SLK 350 with 
Bi-Xenon* headlamps and without Sport Package*)
The cornering fog lamps improve illumina-
tion of the road into which you are turning.
Cornering fog lamps will operate with the 
engine running and with
the exterior lamp switch in 
positionB (
page 106)
or
the exterior lamp switch in 
positionU (
page 106)
or
the daytime running lamp mode 
activated (
page 108)Driving forward
Switching on cornering fog lamps
Depending on whether you are turning 
left or right, switch on the left or right 
turn signal (
page 52).
The respective front fog lamp comes on 
and illuminates the road into which you 
are turning.
Switching off cornering fog lamps
The combination switch for the turn signal 
resets automatically after major steering 
wheel movements. This will switch off the cornering fog lamps if they where activat-
ed 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 
position.
Driving rearward
Switching on cornering fog lamps
Place the gearshift lever (gear selector 
lever*) in positionR.
The inverse front fog lamp comes on 
automatically depending on the 
steering direction and steering angle.
Switching off cornering fog lamps
Place the gearshift lever (gear selector 
lever*) out of positionR.
The respective front fog lamp goes out.
iCornering fog lamps will only come on 
in low ambient lighting conditions.
The cornering fog lamps function is not 
available at a vehicle speed above 
25 mph (40 km/h).
iThe cornering fog lamps will come on 
automatically depending on the 
steering angle, even if you did not 
switch on either turn signal.
If the cornering fog lamps came on 
automatically, they will also go out au-
tomatically depending on the steering 
angle. 
     
        
        Page 114 of 464

114 Controls in detailLightingManual control
Interior lighting
Press interior lighting switch1.
The interior lighting switches on.
Press interior lighting switch1 again.
The interior lighting switches off.Reading lamps
The standard reading lamps are located to 
the left and right of the overhead control 
panel. Reading lamps as part of the interior 
lighting package* are located on the lower 
edge of the interior rear view mirror.
Press reading lamp switch3or4 to 
switch on the respective reading lamp.
Press reading lamp switch3or4 
again to switch off the respective 
reading lamp.
Door entry lamps
For better orientation in the dark, the cor-
responding door entry lamps will switch on 
in darkness when you open a door and the 
automatic control is activated.
The door entry lamps switch off when the 
corresponding door is closed.
iThe footwell lighting* is switched on 
and off simultaneously with the manual 
control.
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 
five minutes. 
     
        
        Page 137 of 464

137 Controls in detail
Control system
Move the selection marker with 
buttonæorç to the 
Time/Date
 
submenu.
Press buttonjork repeatedly 
until you see 
Set date year
 in the mul-
tifunction display.
The selection marker is on the year.
Press buttonæorç to set the 
year.Lighting submenu
Access the 
Lighting
 submenu via the 
Settings...
 menu. Use the 
Lighting
 sub-
menu to change the lamp and lighting set-
tings on your vehicle.
The following functions are available:Setting daytime running lamp mode 
(USA only)
Move the selection marker with 
buttonæorç to the 
Lighting
 
submenu.
Press buttonjork repeatedly 
until you see 
Lamp circuit headlamp 
mode
 in the multifunction display.
The selection marker is on the current 
setting.
Function
Page
Setting daytime running lamp 
mode (USA only)
137
Setting locator lighting
138
Setting night security illumina-
tion
139
Setting interior lighting delayed 
shut-off 
140
iThis function is not available in coun-
tries where the daytime running lamp 
mode is mandatory and therefore in a 
constant mode. 
     
        
        Page 138 of 464

138 Controls in detailControl system
Press buttonæorç to select 
manual operation (
manual
) or daytime 
running lamp mode (
constant
) activat-
ed.
With daytime running lamp mode activated 
and the exterior lamp switch in 
positionMorU, the low beam 
headlamps are switched on when the en-
gine is running.
In low ambient light conditions the follow-
ing lamps will switch on additionally:
Parking lamps
Tail lamps
License plate lamps
Side marker lamps
For more information on the daytime run-
ning lamp mode, see “Lighting” 
(
page 106).Setting locator lighting
With the locator lighting feature activated 
and the exterior lamp switch in 
positionU, the following lamps will 
switch on when the vehicle is unlocked 
with the SmartKey during darkness:
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 
with the SmartKey, the lamps will switch 
off automatically after approximately 
40 seconds.
iFor safety reasons, resetting the Lighting
 submenu to factory settings 
while driving (
page 129) will not de-
activate the daytime running lamp 
mode.
The following message appears in the 
multifunction display:
Lighting Cannot be completely 
reset to factory settings while 
driving
. 
     
        
        Page 139 of 464

139 Controls in detail
Control system
Move the selection marker with 
buttonæorç to the 
Lighting
 
submenu.
Press buttonjork repeatedly 
until you see 
Function Surround 
lighting
 in the multifunction display.
The selection marker is on the current 
setting.
Press buttonæorç to switch 
the locator lighting function 
On.
Turn the exterior lamp switch to 
positionU when exiting the vehicle 
(page 52).
The locator lighting feature is 
activated.Setting night security illumination 
(Headlamps delayed shut-off)
Use this function to set whether and how 
long you would like the exterior lamps to il-
luminate 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 after 
you have removed the SmartKey from the 
starter switch:
Parking lamps
Tail lamps
License plate lamps
Side marker lamps
Front fog lamps
If you do not open a door after removing 
the SmartKey from the starter switch, the 
lamps will switch off automatically after 
approximately 60 seconds.
Move the selection marker with 
buttonæorç to the 
Lighting
 
submenu.
Press buttonjork repeatedly 
until you see 
Headlamps delayed 
shut-off
 in the multifunction display.
The selection marker is on the current 
setting.
Press buttonæorç to select 
the desired lamp-on period.iYou can reactivate this function within 
ten minutes by opening a door.
 
     
        
        Page 140 of 464

140 Controls in detailControl system
You can select:
0s
, the delayed shut-off feature is 
deactivated.
15 s
, 30 s
, 45 s
 or 
60 s
, select the 
desired lamp-on period.
Turn the exterior lamp switch to 
positionU before turning off the en-
gine (
page 52).
The headlamps delayed shut-off fea-
ture is activated.You can temporarily deactivate the de-
layed 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 deacti-
vated. It will reactivate as soon as you 
reinsert the SmartKey in the starter 
switch.Setting interior lighting delayed shut-off
Use this function to set whether and how 
long you would like the interior lighting to 
remain lit during darkness after you have 
removed the SmartKey from the starter 
switch. 
Move the selection marker with 
buttonæorç to the 
Lighting
 
submenu.
Press buttonjork repeatedly 
until you see 
Interior lighting 
delayed shut-off
 in the multifunction 
display.
The selection marker is on the current 
setting.
 
     
        
        Page 167 of 464
167 Controls in detail
Good visibility
Good visibility
For information on the windshield wipers, 
see (
page 53).
Headlamp cleaning system*
The switch is located on the left side of the 
dashboard.
1Headlamp cleaning switch
Switch on the ignition (
page 35).
Briefly press headlamp cleaning 
switch1.
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 295).
Rear view mirrors
For more information on setting the rear 
view mirrors, see “Mirrors” (
page 42).
Interior rear view mirror, antiglare 
position
Tilt the mirror to the antiglare night 
position by moving the lever 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 ignition, the 
counter resets.