2003 MERCEDES-BENZ CL600 fog light

109 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. For exterior lamp
switch, see (
page 108).
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
.
iWith the daytime running lamp mode
activated, the low beam headlamps will
not switch 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
and pull
the exterior lamp switch to first or sec-
ond stop (
page 110).
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 driv-
er. Switch on the vehicle lights manually
when driving or when traffic conditions re-
quire you to do so.
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.

110 Controls in detailLightingDaytime 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 gear 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” (
page 136).
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 136) and “Setting night security il-
lumination” (
page 137).
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 108).
iFog lamps will operate with the parking
lamps and / or the low beam head-
lamps on. Fog lamps should only be
used in conjunction with low beam
headlamps. Consult your State or Prov-
ince Motor Vehicle Regulations regard-
ing permissible lamp operation.

136 Controls in detailControl systemSetting daytime running lamp mode
(USA only)
Move the selection marker with
the
æ
or
ç
button to the
LIGHT-
ING
submenu.

Press button
j
or
k
repeatedly
until you see this message in the dis-
play:
LIGHT CIRCUIT HEADLIGHT MODE
.
The selection marker is on the current
setting.

Press
æ
or
ç
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
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
the
æ
or
ç
button to the
LIGHT-
ING
submenu.
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 132) 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!
.

137 Controls in detail
Control system

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

Press
æ
or
ç
to select the de-
sired setting.
The locator lighting will be switched on
or off.Setting night security illumination
(Exterior lights delayed shut-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 key from
the starter switch:


Parking lamps


Tail lamps


License plate lamps


Front fog lampsTo select delayed shut-off period:

Move the selection marker with
the
æ
or
ç
button to the
LIGHT-
ING
submenu.

Press button
j
or
k
repeatedly
until you see this message in the dis-
play:
HEADLIGHTS DELAYED SHUT-OFF
.
The selection marker is on the current
setting.

Press
æ
or
ç
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 de-
layed shut-off feature is activated
iYou can reactivate this function within
ten minutes by opening a door.
If you do not open a door after remov-
ing the key, the lamps will automatical-
ly shut off after 60 seconds.

162 Controls in detailAutomatic climate controlWindshield fogged on the outside
Switch the windshield wipers on.

Press on both
U
buttons until they
click in.
The
h
, V
, j
and
k
sym-
bols are no longer visible.

Press button
,
to switch off the air
recirculation (
page 159).
The indicator lamp on the button goes
out.

Set blower to the maximum speed.
Adjusting air volume
Use air volume control9 (
page 159) for
both automatic and manual air volume ad-
justment.
Adjusting automatically

PressA on air volume switch9
(page 159).
The display shows “AUTO”. The air vol-
ume is adjusted automatically.Adjusting manually
Reducing air volume

Press switch 9 down until the desired
air volume is reached.
The display shows the current level.
Increasing air volume

Press switch9 up until the desired air
volume is reached.
The display shows the current level.
Maximum cooling MAXCOOL
If the left and right air distribution controls
as well as the air volume control are set
to
U
and there is a high need for cool-
ing, 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
(page 159).
The indicator lamp on the button lights
up.
Switch off air recirculation, if selected.

Press button
,
(page 159).
The indicator lamp on the button goes
out.

Close center air vents.

Adjust side air vents upwards.
Deactivating

Press button
P
(page 159).
The indicator lamp on the button goes
out. Defrosting is turned off.
iThese settings should only be selected
for a short time.

163 Controls in detail
Automatic climate control
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
,
(page 159).
The indicator lamp on the button lights
up.
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
,
pressed, the
side windows and the sliding / pop-up
roof will be closed.
Warning!
G
Never operate the side windows and the
sliding/pop-up roof if there is the possibility
of anyone being harmed by the closing pro-
cedure.
In the event that the procedure causes po-
tential danger, the closing of the side win-
dows can be immediately halted by
releasing the
,
button or by pressing
the respective window switch. The closing of
the sliding/pop-up roof can be immediately
halted by releasing the
,
button or by
moving the sliding/pop-up roof switch in the
overhead control panel in any direction.
iThe air recirculation mode is activated
automatically:

at high outside temperatures


if the concentration of carbon mon-
oxide and nitrogen oxide in the out-
side air increases beyond a
predetermined level, for example in
a tunnel.
Please note that the charcoal filter
must be activated (
page 164) for the
air recirculation mode to be activated
automatically.
If you have turned off the air condition-
ing (
page 166) or the outside
temperature is below 41°F (5°C), the
air recirculation mode will not switch
on automatically.

165 Controls in detail
Automatic climate control
The system switches automatically to the
air recirculation mode if the carbon
monoxide (CO) or nitrogen oxide (NO
X)
concentration of the outside air increases
beyond a predetermined level, for example
in a tunnel.
The automatic air recirculation mode does
not function if AC
OFF
m o d e i s s e l e c t e d o r i f
the outside temperature has fallen below
41°F (5°C).
The activated charcoal filter should be
switched off when windows fog up on the
inside, or if the passenger compartment
needs to be quickly heated or cooled
down.
Rear window defroster
The rear window defroster uses a large
amount of power. To keep battery drain to
a minimum, switch off the defroster as
soon as the rear window is clear. The de-
froster is automatically deactivated after
approximately 6 to 17 minutes of opera-
tion depending on the outside tempera-
ture.
Activating
Press button
F
(page 159).
The indicator lamp on the button lights
up.
Deactivating

Press button
F
(page 159) again.
The indicator lamp on the button goes
out.
iIf you keep button
e
pressed, the
side windows and the sliding / pop-up
roof will be returned to their previous
positions.
Warning!
G
Any accumulation of snow and ice should be
removed from the rear window before driv-
ing. Visibility could otherwise be impaired,
endangering you and others.!If the rear window defroster switches
off too soon and the indicator lamp
starts blinking, this means that too
many electrical consumers are operat-
ing simultaneously and there is insuffi-
cient voltage in the battery. The system
responds automatically by deactivating
the rear window defroster.
As soon as the battery has sufficient
voltage, the rear window defroster au-
tomatically turns itself back on.

166 Controls in detailAutomatic climate controlDeactivating the climate control sys-tem
Deactivating
It is possible to completely deactivate the
automatic climate control system. 
Press button
M
(page 159).
The display shows “0”
Reactivating
There are several ways to reactivate the
automatic climate control system:

Press one of the following buttons, M
, P
, U
, a temperature con-
trol switch (
page 159) or air volume
switch 9 on the climate control panel.
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 automatic
climate control system. The air in the vehi-
cle will then no longer be cooled or dehu-
midified.
Press buttonAC
OFF
(page 159).
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 159).
The indicator lamp on the
buttonAC
OFF
goes out.
The air conditioning 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 theAC
OFF
button on the automatic
climate control panel starts to blink,
this indicates that the air conditioning
is losing refrigerant. The compressor
has turned itself off. The air condition-
ing cannot be turned on again.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.