2003 MERCEDES-BENZ C240 Fog lamp

102 Controls in detailLightingManual 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 above.
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
.
Warning!
G
In automatic headlamp mode, the head-
lamps will not be automatically switched on
under foggy conditions. To minimize risk to
you and to others, activate headlamps by
turning exterior lamp switch to
B
.
The driver is responsible for the operation of
the vehicle’s lights at all times. The automat-
ic headlamp feature is only an aid to the
driver. Switch on the vehicle lights manually
when driving or when traffic conditions
require you to do so.
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 position
U
. To
activate the fog lamps, turn exterior
lamp switch to position
B
.
iIf you drive in countries where vehicles
drive on the other side of the road than
the country where the vehicle is regis-
tered, you must have the headlamps
modified for symmetrical low beams.
Relevant information can be obtained
at your authorized Mercedes-Benz Cen-
ter.

103 Controls in detail
Lighting
Daytime running lamp mode
Turn exterior lamp switch to
position
M
or
U
.
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 position
B
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 position
M
.To activate the daytime running lamp
mode, see “Setting daytime running lamp
mode (USA only)” (
page 125).
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 126) and “Setting night security il-
lumination” (
page 126).
Switching on front fog lamps

Make sure that the low beam head-
lamps are switched on.

Pull out exterior lamp switch to first
stop.
The green indicator lamp
‡
in the
lamp switch lights up.Switching on rear fog lamp

Make sure that the low beam head-
lamps are switched on.

Pull out exterior lamp switch to second
stop.
The yellow indicator lamp
†
in the
lamp switch lights up.
iSee notes on the exterior lamp switch
(page 101).
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.

126 Controls in detailControl systemSetting locator lighting
During darkness, the following lamps will
come on when the exterior lamp switch is
in position
U
, the locator lighting
feature is activated, and the vehicle is
unlocked by remote control:


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
automatically after a period of approxi-
mately 40 seconds.

Move the selection marker with
the
æ
or
ç
button to the
LIGHTING
submenu.

Press button
j
or
k
repeatedly
until you see this message in the
display:
LOCATOR LIGHTING
.
The selection marker is on the current
setting.

Press
æ
or
ç
to select the
desired setting.
The locator lighting will be switched on
or off.Setting night security illumination
(Exterior lamps delayed shut-off)
Use the
HEADLAMPS 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 key from
the starter switch:


Parking lamps


Tail lamps


License plate lamps


Front fog lampsiYou can reactivate this function within
ten minutes by opening a door.
If you do not open a door after
removing the key, the lamps will
automatically switch off after
60 seconds.

151 Controls in detail
Climate control
Adjusting air distribution and volume
Use the air distribution control4
(page 149) to adjust the air distribution.
The following symbols are found on the
controls:
Adjusting manually

Press the
U
button.
The indicator lamp on the button goes
out.

Select any of the six air volume speeds
using the air volume control1
(page 149) and the air distribution.Adjusting automatically

Press the
U
button.
The indicator lamp on the button
comes on. The air distribution and vol-
ume is adjusted automatically.
Windshield fogged on the outside

Switch the windshield wipers on.

Switch to manual mode.

Turn the air distribution control
to
a
or
Y
.
Defrosting
Activating
Press button
P
.
The indicator lamp on the button
comes on.
or

Switch off air recirculation, if selected.
Press button
O
.
The indicator lamp on the button goes
out.

Close center air vents.

Open left and right side air vents and
adjust side air vents upwards.
Symbol
Function
a
Directs air through the center,
side and rear passenger
compartment air vents
Z
Directs air to the windows
X
Directs air into the entire
vehicle interior
Y
Directs air to the footwells
iThese settings should only be selected
for a short time.

152 Controls in detailClimate controlDeactivating
Press button
P
.
The indicator lamp on the button goes
out. Defrosting is turned off.
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside. This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.Activating

Press button
O
.
The indicator lamp on the button
comes on.
Deactivating

Press button
O
.
The indicator lamp on the button goes
out.The air recirculation mode is deactivated
automatically:


after five minutes if the outside temper-
ature is below approximately 41°F
(5°C)


after five minutes if the air conditioning
is turned off


after 30 minutes if the outside temper-
ature is above approximately 41°F
(5°C)
At outside temperatures above 79°F
(26°C) the system will not automatically
switch back to outside air. A quantity of
outside air is added after approximately
30 minutes.
Warning!
G
When the outside temperature is
below 41°F (5°C), only switch to air
recirculation mode for short periods to
prevent window fogging.
iIf you keep button
O
pressed the
side windows and sliding/pop-up roof*
will be closed.
The air recirculation mode is activated
automatically at high outside tempera-
tures.
If you have turned off the air condition-
ing (
page 154) or the outside
temperature is below 41°F (5°C), the
air recirculation mode will not switch
on automatically.
iIf you keep button
O
pressed the
side windows and sliding/pop-up roof*
will be returned to their previous posi-
tion.

154 Controls in detailClimate controlAir 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 buttonAC
OFF
(page 149).
The indicator lamp on the
buttonAC
OFF
lights up.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.

PressAC
OFF
again (
page 149).
The indicator lamp on the
buttonAC
OFF
goes out.
The air conditioning uses the
refrigerant R134a. This refrigerant is free
of CFC’s 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 air conditioning cannot be turned
on again, this indicates that the air con-
ditioning is losing refrigerant. The com-
pressor has turned itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.

159 Controls in detail
Automatic climate control*
Adjusting air distribution
Use air distribution controls2 and5
(page 157) to separately adjust the air
distribution on each side of the passenger
compartment. The following symbols are
found on the controls:
Adjusting manually

Press left or right
U
button.
The indicator lamp on the button goes
out.
The air distribution can be adjusted
manually.Adjusting automatically

Press left or right
U
button.
The indicator lamp on the button
comes on.
The air distribution is adjusted
automatically.
Windshield fogged on the outside

Switch the windshield wipers on.

Switch to manual mode.

Turn the air distribution control
to
a
or
Y
.
Adjusting air volume
Adjusting manually
Seven blower speeds are available.
Press left
M
or right
Q
side of air
volume control switch until the re-
quested blower speed is attained.
The display “Auto” disappears and the
automatic mode is switched off. The
selected blower speed is shown in the
display.
Adjusting automatically

Press left or right
U
button.
The indicator lamp on the button
comes on.
The air volume is adjusted
automatically.
Symbol
Function
a
Directs air through the center,
side and rear passenger
compartment air vents
Z
Directs air to the windows
X
Directs air into the entire
vehicle interior
Y
Directs air to the footwells

160 Controls in detailAutomatic climate control*Maximum cooling MAXCOOL
If the left and right air distribution controls
as well as the airflow volume control are
set to
U
and there is a high need for
cooling, the display “AUTO MAXCOOL” ap-
pears.
This provides the fastest possible cooling
of the vehicle interior (when windows and
sliding/pop-up roof* are closed).
Defrosting
Activating
Press button
P
.
The indicator lamp on the button lights
up.

Switch off air recirculation, if selected.

Press button
O
.
The indicator lamp on the button goes
out.

Close center air vents.

Adjust side air vents upwards.
Deactivating

Press button
P
.
The indicator lamp on the button goes
out. Defrosting is turned off.
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside. This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.
Activating
Press button
O
.
The indicator lamp on the button lights
up.
iThese settings should only be selected
for a short time.
Warning!
G
When the outside temperature is
below 41°F (5°C), only switch to air
recirculation mode for short periods to
prevent window fogging.