2003 MERCEDES-BENZ C320 indicator

123 Controls in detail
Control system
Selecting time display mode
Move the selection marker with
the
æ
or
ç
button to the
INSTRUMENT CLUSTER
submenu.

Press button
j
or
k
repeatedly
until you see this message in the
display:
12/24 HOUR
.
The selection marker is on the current
setting.

Press
æ
or
ç
to set the
12h
or
24h
time display mode.Selecting temperature display mode

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

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

Press
æ
or
ç
to set temperature
unit to degrees Celsius (°C) or degrees
Fahrenheit (°F).Selecting speedometer display mode

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

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

Press
æ
or
ç
to set
speedometer unit to km or
miles
.

138 Controls in detailAutomatic transmission*
Automatic transmission*Information for driving with an automatic
transmission is found in the “Getting start-
ed” section (
page 44).
Your transmission adapts its gear shifting
process to your individual driving style by
continually adjusting the shift points up or
down. These shift point adjustments are
performed based on current operating and
driving conditions.
If the operating conditions change the au-
tomatic transmission reacts by adjusting
its gear shift program.The automatic transmission selects indi-
vidual gears automatically, depending on


the selector lever positionD with gear
ranges4, 3, 2, 1 (
page 140)


the selected shift program (W/S)
(page 142)


the position of the accelerator pedal
(page 143)


the vehicle speed
The current selector lever position and
shift program (W/S) appear in the speed-
ometer display (
page 111).
An additional indication of the current se-
lector lever position can be found on the
cover of the shifting-gate. The indicators
come on when you activate a switch (e.g.
unlocking the vehicle or opening a door)
and go out after approximately
15 minutes.When the selector lever is in positionD,
you can influence transmission shifting by


limiting the gear range


changing gears yourself
iDuring the brief warm-up the transmis-
sion upshifting is delayed. This allows
the catalytic converter to heat up more
quickly to operating temperatures.
Warning!
G
It is dangerous to shift the selector lever out
ofP orN if the engine speed is higher than
idle speed. If your foot is not firmly on the
brake pedal, the vehicle could accelerate
quickly forward or reverse. You could lose
control of the vehicle and hit someone or
something. Only shift into gear when the en-
gine is idling normally and when your right
foot is firmly on the brake pedal.

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.

153 Controls in detail
Climate control
Rear window defroster
The rear window defroster uses a large
amount of power. To keep the battery
drain to a minimum, switch off the defrost-
er as soon as the rear window is clear. The
defroster is automatically deactivated af-
ter approximately 6 to 17 minutes of oper-
ation depending on the outside
temperature.
Activating
Press button
F
.
The indicator lamp on the button lights
up.
Deactivating

Press button
F
again.
The indicator lamp on the button goes
out.Deactivating the climate control
system
Deactivating
Set the air volume control
(page 149) to position 0.
Reactivating

Set the air volume control
(page 149) to any speed.
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.

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.