125 Controls in detail
Lighting
Fog lamps
Front fog lamps
Switch on the low beam headlamps
(page 50).
Pull out the exterior lamp switch to first
stop.
The front fog lamps switch on.
The green indicator lamp‡ in the
exterior lamp switch comes on
(page 122).
Push in the exterior lamp switch.
The front fog lamps switch off.
The green indicator lamp‡ in the
exterior lamp switch goes out.Rear fog lamp (driver’s side only)
Switch on the front fog lamps
(page 125).
Pull out the exterior lamp switch to
second stop.
The rear fog lamp switches on.
The yellow indicator lamp† in the
exterior lamp switch comes on
(page 122).
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.
Warning!
G
In low ambient lighting or foggy conditions,
only switch from position U to B with
the vehicle at a standstill. Switching
fromU to B will briefly switch off the
headlamps. Doing so while driving in low
ambient lighting conditions may result in an
accident.iFog lamps will operate with the parking
lamps and/or the low beam headlamps
on. Fog lamps should only be used in
conjunction with low beam headlamps.
Consult your State or Province Motor
Vehicle Regulations regarding permis-
sible lamp operation.
iFog lamps cannot be switched on with
the exterior lamp switch in
positionU. For switching on the fog
lamps, turn the exterior lamp switch to
positionB first.
126 Controls in detailLightingCombination 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 122).
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.Cornering fog lamps* (CLK 320 with
Bi-Xenon* headlamps)
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 122)
or
the exterior lamp switch in
positionU (
page 122)
or
the daytime running lamp mode
activated (
page 124)
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).
129 Controls in detail
Lighting
Deactivating automatic control
Press the = symbol on rocker
switch2.
The interior lighting remains switched
off in darkness, 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 the W symbol on rocker
switch2.
The front interior lights come on.
Press rocker switch2 to center
position to activate the automatic
control.Switching right front reading lamp on
and off
Press right button X.
The right reading lamp comes on.
Press right button X again.
The right reading lamp goes out.
Switching left front reading lamp on and
off
Press left button X.
The left reading lamp comes on.
Press left button X again.
The left 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 automat-
ic function.
The entry lamp switches off automatically
when the door is closed.Trunk lamp
The trunk lamp switches on if the trunk lid
is opened.
If you leave the trunk open for an extended
period of time, the trunk lamp will switch
off automatically after approximately ten
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
five minutes.
143 Controls in detail
Control system
Submenus in the Settings menu
Press buttonk orj.
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.
Move within the submenus with
buttonk orj to the individual
functions.
The settings themselves are made with
buttonæ orç.Resetting the functions of a submenu
For each submenu you can reset all the
functions to the factory settings.
Move to a function in the submenu.
Press the reset button (
page 130) in
the instrument cluster for approxi-
mately three seconds.
The request to press the reset button
once more to confirm appears in the
multifunction display.
Press the reset button once more.
All functions of the submenu will reset
to factory settings.
iThe settings you have changed will not
be reset unless you confirm the action
by pressing the reset button a second
time. After approximately five seconds,
the
Settings...
menu reappears in
the multifunction display.
For safety reasons, the following
functions are not reset while driving:
the
Lamp circuit headlamp
func-
tion in the
Lighting
submenu
the
Key-dependent
function in the
Convenience
submenu
iThe settings you have changed will not
be reset unless you confirm the action
by pressing the reset button a second
time. After approximately five seconds,
the
Settings
menu reappears in the
multifunction display.
152 Controls in detailControl systemSetting daytime running lamp mode
(USA only)
Move the selection marker with
buttonæ orç to the
Lighting
submenu.
Press buttonj ork repeatedly
until the message
Lamp circuit
headlamp
appears in the multifunction
display.
The selection marker is on the current
setting.
Press buttonæ orç 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
positionM or U 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 lampsFor more information on the daytime run-
ning lamp mode, see “Lighting”
(
page 122).
iThis function is not available in
countries where the daytime running
lamp mode is mandatory and therefore
in a constant mode.
iIf you turn the exterior lamp switch to
another position, the corresponding
lamp(s) will switch on.
For safety reasons, resetting the Lighting
submenu to factory settings
(
page 143) 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 settings while
driving
.
153 Controls in detail
Control system
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.
To activate locator lighting:
Make sure the function surround light-
ing is set to
on, see (
page 153).
Move the selection marker with
buttonæ orç to the
Lighting
submenu.
Press buttonj ork repeatedly
until the message
Function 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
position U when exiting the vehicle
(page 122).
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
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 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.
154 Controls in detailControl system
Move the selection marker with
buttonæ orç to the
Lighting
submenu.
Press buttonj ork repeatedly
until the message
Headlamps delayed
shut-off
appears in the multifunction
display.
The selection marker is on the current
setting.
Pressæ orç to select the de-
sired lamp-on period.You can select:
0 s
, the delayed shut-off feature is
deactivated
15 s
, 30 s
, 45 s
or
60 s
, the delayed
shut-off feature is activated
Turn the exterior lamp switch to
position U before tuning off the
engine (
page 122).
The headlamps delayed shut-off
feature 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
to0.
The delayed shut-off feature is
deactivated. 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
buttonæ orç to the
Lighting
submenu.
Press buttonj ork repeatedly
until the message
Interior lamp de-
layed shut-off appears in the
multifunction display.
The selection marker is on the current
setting.
iYou can reactivate this function within
ten minutes by opening a door.
176 Controls in detailGood visibilityFor information on the windshield wipers,
see “Windshield wipers” (
page 52).
Headlamp cleaning system*
The switch is located on the left side of the
dashboard.
1Headlamp washer switch
Switch on the ignition (
page 36).
Press 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 460).
Rear view mirrors
For more information on setting the rear
view mirrors, see “Mirrors” (
page 41).
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 gear R 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 sen-
sors 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 wind screen is
installed.
Glare can endanger you and others.Warning!
G
In the 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.