125 Controls in detail
Lighting
To activate the daytime running lamp
mode, see “Setting daytime running lamp
mode (USA only)” (
page 156).Manual headlamp mode
The low beam headlamps and parking
lamps can be switched on and off with the
exterior lamp switch. For exterior lamp
switch, see (
page 124).
Automatic headlamp mode
The parking lamps, low beam headlamps
and license plate lamps switch on and off
automatically depending on the brightness
of the ambient light.
Turn the exterior lamp switch to U.
iIf you remove the SmartKey and open
the driver’s door while the parking
lamps or low beam headlamps are
switched on, then:
a warning sounds
$ appears in the multifunction
display.
the message
SWITCH OFF LIGHTS!
appears in the multifunction display
iWith the daytime running lamp mode
activated and the engine running, the
low beam headlamps cannot be
switched off manually.
Warning!
G
If the exterior lamp switch is set toU,
the headlamps may switch off unexpect-
edly when the system senses bright am-
bient light, for example light from
oncoming traffic.
the headlamps will not be automatically
switched on under foggy conditions.
To minimize risk to you and to others, acti-
vate headlamps by turning exterior lamp
switch to B when driving or when traffic
and / or ambient lighting conditions require
you to do so.
In low ambient lighting conditions, only
switch from position U to B with the
vehicle at a standstill. Switching from U
to B will briefly switch off the head-
lamps. Doing so while driving in low ambient
lighting conditions may result in an acci-
dent.
The automatic headlamp feature is only an
aid to the driver. The driver is responsible for
the operation of the vehicle's lights at all
times.
126 Controls in detailLighting
Daytime running lamp mode
Turn exterior lamp switch to
positionM orU.
When the engine is running, the low beam
headlamps are automatically switched on.
In low ambient light conditions, the parking
lamps will also switch on.
Canada only
When you shift from a driving position to
positionN orP, the low beam switches off
(with a three-minute delay).
For nighttime driving you should turn the
exterior lamp switch to positionB to
permit activation of the high beam head-
lamps.USA only
The high beam headlamps can also be ac-
tivated when driving with the daytime run-
ning lamp mode activated and exterior
lamp switch in positionM.
To activate the daytime running lamp
mode, see “Setting daytime running lamp
mode (USA only)” (
page 156).
Locator lighting and night security illu-
mination
Locator lighting and night security illumi-
nation are described in the control system
section under “Setting locator lighting”
(
page 156) and “Setting night security il-
lumination” (
page 157).
iWith the daytime running lamp mode
activated, the low beam headlamps will
not switch off automatically.iThe front fog lamps and rear fog lamp
cannot be switched on manually with
exterior lamp switch in positionU.
To activate the fog lamps, turn exterior
lamp switch to positionB and pull
the exterior lamp switch to first or
second stop (
page 127).
iSee notes on the exterior lamp switch
(page 124).
127 Controls in detail
Lighting
Switching on fog lamps
Switching on front fog lamps
Make sure the low beam headlamps
are switched on.
Pull out exterior lamp switch to first
stop.
The green indicator lamp‡ in the
lamp switch comes on.Switching on rear fog lamp
Make sure the low beam headlamps
are switched on.
Pull out exterior lamp switch to second
stop.
The yellow indicator lamp† in the
lamp switch comes on.
Warning!
G
In low ambient lighting or foggy conditions,
only switch from position U to B with
the vehicle at a standstill. Switching from
U to B will briefly switch off the head-
lamps. Doing so while driving in low ambient
lighting conditions may result in an acci-
dent.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.
iThe front fog lamps and rear fog lamp
cannot be switched on manually with
exterior lamp switch in positionU.
To activate the fog lamps, turn exterior
lamp switch to positionB and pull
the exterior lamp switch to first or sec-
ond stop (
page 124).
156 Controls in detailControl systemSetting daytime running lamp mode
(USA only)
Move the selection marker with
theæ orç button to the
LIGHT-
ING
submenu.
Press buttonj ork repeatedly
until you see this message in the dis-
play:
LIGHT CIRCUIT HEADLAMP MODE
.
The selection marker is on the current
setting.
Pressæ orç to select manual
or daytime running lamp (constant)
mode. This function is not available in
countries where daytime running
lamps are mandatory.With daytime running lamp mode se-
lected and the exterior lamp switch at
position0, the following lamps will
come on automatically when the en-
gine is turned on:
Parking lamps and low beam head-
lamps
License plate lamps (in low ambient
light conditions) Setting locator lighting
During darkness, the following lamps will
come on when the exterior lamp switch is
in position U, the locator lighting fea-
ture is activated, and the vehicle is un-
locked by remote control:
Parking lamps
Tail lamps
License plate lamps
Front fog lamps
To activate locator lighting:
Make sure the function
LOCATOR
LIGHTING
is set.
Turn the exterior lamp switch to
positionU.
The locator lighting switches off when the
driver’s door is opened. It switches off au-
tomatically after a period of approximately
40 seconds.
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 152) while driving will not re-
set the daytime running lamp mode.
In the display you will then see the mes-
sage:
LIGHTING – CANNOT BE RESET
COMPLETELY TO FACTORY SETTINGS
WHILE DRIVING
.
157 Controls in detail
Control system
Move the selection marker with
theæ orç button to the
LIGHT-
ING
submenu.
Press buttonj ork repeatedly
until you see this message in the dis-
play:
LOCATOR LIGHTING
.
The selection marker is on the current
setting.
Pressæ orç to select the de-
sired setting.
The locator lighting will be switched
ON
or
OFF
.Setting night security illumination
(Exterior lamps delayed switch-off)
Use the
HEADLAMPS DELAYED SWITCH-OFF
function to set whether and for how long
you would like the exterior lamps to illumi-
nate during darkness after all doors are
closed. When the delayed switch-off fea-
ture is activated and the exterior lamp
switch is in position U before the en-
gine is turned off, the following lamps will
remain lit after you remove the SmartKey
from the starter switch:
Parking lamps
Tail lamps
License plate lamps
Front fog lampsTo activate night security illumination:
Select delayed switch-off period (see
below).
Turn the exterior lamp switch to
positionU before turning off the en-
gine.
To select delayed switch-off period:
Move the selection marker with
theæ orç button to the
LIGHT-
ING
submenu.
Press buttonj ork repeatedly
until you see this message in the dis-
play:
HEADLAMPS DELAYED SWITCH-OFF
.
The selection marker is on the current
setting.
iYou can reactivate this function within
ten minutes by opening a door.
If you do not open a door after remov-
ing the SmartKey, the lamps will auto-
matically switch off after 60 seconds.
331 Practical hints
What to do if …?
Display symbol
Display message
Possible cause
Possible solution
.
LIGHT SENSOR
DRIVE TO WORKSHOP!
The lamp sensor is malfunctioning. The
headlamps switch on automatically.
In the control system, set lamp operation
to manual (
page 154).
Switch on headlamps using the exterior
lamp switch.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
LOW BEAM, L
CHECK LAMP!
The left low beam lamp is malfunctioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
LOW BEAM, R
CHECK LAMP!
The right low beam lamp is malfunction-
ing.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
MARKER LIGHT, FL
CHECK LAMP!
The front left side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
MARKER LIGHT, FR
CHECK LAMP!
The front right side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
REAR FOGLAMP
CHECK LAMP!
The rear fog lamp is malfunctioning.
Replace the bulb as soon as possible.
REVERSE LIGHT, L
CHECK LAMP!
The left reverse lamp is malfunctioning.
Replace the bulb as soon as possible.
REVERSE LIGHT, R
CHECK LAMP!
The right reverse lamp is malfunctioning.
Replace the bulb as soon as possible.
353 Practical hints
Replacing bulbs
Replacing bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See an authorized
Mercedes-Benz Center for headlamp ad-
justment.
Bulbs Front lamps
iBackup bulbs will be brought into use
when the following lamps malfunction:
Turn signal lamps
Brake lamps
Parking lamps
Tail lamps
Lamp
Type
1
Additional turn sig-
nal lamps
LED
2
Low beam
1
1Vehicles with Bi-Xenon headlamps*: Low beam
and high beam use the same D2S-35W lamp. Do
not replace the Bi-Xenon bulbs yourself. See an au-
thorized Mercedes-Benz Center.
H7-55 W
Bi -Xenon*
D2S-35 W
3
Turn signal lamp
2357 A
4
Fog lamp
H7-55 W
5
Parking and stand-
ing lamp
W5W
6
Side marker lamp
W5W
7
High beam
H7-55 W
354 Practical hintsReplacing bulbsRear lamps Notes on bulb replacement
Only use 12 volt bulbs of the same type
and with the specified watt rating.
Switch lights off before changing a bulb
to prevent short circuits.
Always use a clean lint-free cloth when
handling bulbs.
Your hands should be dry and free of oil
and grease.
If the newly installed bulb does not
come on, visit an authorized
Mercedes-Benz Center.
Have the LEDs and bulbs for the follow-
ing lamps replaced by an authorized
Mercedes-Benz Center.
Additional turn signal lamps in the
exterior rear view mirrors
High mounted brake lamp
Bi-Xenon lamps*
Front fog lamps
Lamp
Type
8
Brake lamp
LED
9
Turn signal lamp
PY 21 W
a
Tail and standing
lamp, side marker
P 21/4 W
b
Backup lamp
P21W
c
License plate lamps
C5W
d
Tail lamp, Rear fog
lamp
P 21/4 W
e
High mounted brake
lamp
LED
Warning!
G
Keep bulbs out of reach of children.
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Halogen lamps contain pressurized gas. A
bulb can explode if you:
touch or move it when hot
drop the bulb
scratch the bulb
Wear eye and hand protection.
Because of high voltage in Bi-Xenon lamps,
it is dangerous to replace the bulb or repair
the lamp and its components. We recom-
mend that you have such work done by a
qualified technician.