105 Controls in detail
Lighting
Manual headlamp mode
The low beam headlamps and parking
lamps can be switched on and off with the
exterior lamp switch, see (
page 104).
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:
a warning sounds
$ appears in the multifunction
display
the message
TURN OFF LIGHTS!
ap-
pears 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.
106 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
(three minutes 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” (
page 129).
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 130) and “Setting night security il-
lumination” (
page 131).
Exterior rear view mirror lamps
If the vehicle is centrally unlocked in the
darkness, the lamps in the exterior rear
view mirrors come on.
iWith the daytime running lamp mode
activated, the low beam headlamps will
not be switched off automatically.iFront fog lamps and rear fog lamp can
not be switched on manually with exte-
rior lamp switch in positionU. To
activate the fog lamps, turn exterior
lamp switch to positionB.
iSee notes on the exterior lamp switch
(page 104).
107 Controls in detail
Lighting
If a door is opened, the lamp on this side
goes out. If no doors are opened, the
lamps go out:
when the ignition is switched on
after a maximum of 40 seconds
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
Check that 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.
Combination switch
The combination switch is located on the
left side of the steering column.
1High beam
2High beam flasher
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 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 allow-
able lamp operation.
130 Controls in detailControl system
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 SmartKey:
parking lamps
tail lamps
license plate lamps
front fog lamps
The locator lighting switches off when the
driver’s door is opened. It switches off au-
tomatically after a period of approximately
40 seconds.
Move the selection marker with
theæ orç button to the LIGHTING
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.
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 123) will not reset the daytime
running lamp mode.
In the display you will then see the mes-
sage:
LIGHTING – CANNOT BE TOTALLY
RESET TO FACTORY SETTINGS WHILE
DRIVING.
131 Controls in detail
Control system
Setting night security illumination
(Exterior lamps delayed switch-off)
Use the
HEADLIGHTS DELAYED SHUT-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 shut-off feature
is activated and the exterior lamp switch is
in position U, the following lamps will
remain lit after you remove the SmartKey
from the starter switch:
parking lamps
tail lamps
license plate lamps
front fog lamps
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:
HEADLIGHTS DELAYED SHUT-OFF
.
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 switch-off feature
is deactivated
15 s
, 30 s
, 45 s
or
60 s
, the delayed
switch-off feature is activated
You can temporarily deactivate the de-
layed switch-off feature:
Before leaving the vehicle, turn the
SmartKey in the starter switch to
position0.
Then turn it to position2 and back
to0.
The delayed switch-off feature is deac-
tivated. It will reactivate as soon as you
reinsert the SmartKey in the starter
switch.
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.
162 Controls in detailClimate controlDeactivating the climate control system
Deactivating
Set the air volume control switch to
position0.
Reactivating
Set the air volume control switch to any
speed.
Air conditioning
The air conditioning is operational while
the engine is running and cools the interior
air to the temperature set by the operator.
Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Press button°.
The indicator lamp on the button°
comes on.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air conditioner.
Press button° again.
The indicator lamp on the button°
goes out.
The air conditioner uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.
!If the° button on the climate con-
trol panel starts to blink, this indicates
that the air conditioner is losing refrig-
erant. The compressor has turned itself
off. The air conditioner cannot be
turned on again.
Have the air conditioner checked at
the nearest authorized
Mercedes-Benz Light Truck Center.
275 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
.
BRAKE LIGHT, R
CHECK LIGHT!
The right brake lamp is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
FRONT FOGLIGHT, L
CHECK LIGHT!
The left front fog lamp is malfunctioning.
Replace the bulb as soon as possible.
FRONT FOGLIGHT, R
CHECK LIGHT!
The right front fog lamp is malfunctioning.
Replace the bulb as soon as possible.
FR. L. PARK. LAMP
CHECK LIGHT!
BACK-UP LIGHT ON!
The left parking lamps are malfunction-
ing. A backup bulb is being used.
Replace the bulb as soon as possible.
FR. R. PARK LAMP
CHECK LIGHT!
BACK-UP LIGHT ON!
The right parking lamps are malfunction-
ing. A backup bulb is being used.
Replace the bulb as soon as possible.
HIGH BEAM, L
CHECK LIGHT!
The left high beam lamp is malfunction-
ing.
Replace the bulb as soon as possible.
HIGH BEAM, R
CHECK LIGHT!
The right high beam lamp is malfunction-
ing.
Replace the bulb as soon as possible.
277 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
.
MARKER LIGHT, FL
CHECK LIGHT!
The left front side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
MARKER LIGHT, FR
CHECK LIGHT!
The right front side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
REAR FOGLIGHT
CHECK LIGHT!
The rear fog lamp is malfunctioning.
Replace the bulb as soon as possible.
REAR FOGLIGHT
TURN OFF
BACK-UP LIGHT ON!
A lamp is malfunctioning. A backup bulb
is being used.
Turn the rear fog lamp off.
REVERSE LIGHT, R
CHECK LIGHT!
The right backup lamp is malfunctioning.
Replace the bulb as soon as possible.
TAIL LIGHT, L
CHECK LIGHT!
BACK-UP LIGHT ON!
The left tail lamp is malfunctioning. A
backup bulb is being used.
Replace the bulb as soon as possible.
TAIL LIGHT, R
CHECK LIGHT!
BACK-UP LIGHT ON!
The right tail lamp is malfunctioning. A
backup bulb is being used.
Replace the bulb as soon as possible.
TURN SIG., LF
CHECK LIGHT!
BACK-UP LIGHT ON!
The left front turn signal lamp is malfunc-
tioning. A backup bulb is being used.
Replace the bulb as soon as possible.