MERCEDES-BENZ C320 2001 W203 Owner's Manual

152 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Defrosting
Windows fogged up on the inside
Press the P button. The indicator lamp in the button
illuminates.
Switch off air recirculation, if selected. Press
buttonO, the indicator lamp in the button will go
out.
The fan is set to a higher speed and the warm air is
directed to the defroster and windshield air outlets.
Pressing the switch again returns the system to the
previous setting.Windshield fogged up on the outside
Switch on the windshield wiper.
Close air outlet on dashboard top center (7, page 146).
Switch to manual mode.
Turn air distribution control switch to positionh
ork.

153 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Air recirculation
Select air recirculation:
Press button O briefly. The indicator lamp in the
button illuminates.
To switch off the air recirculation:
Press button O briefly. The indicator lamp in the
button will go out.
Switching on air recirculation and activating
convenience closing of power windows and sliding/
pop-up roof:
Press button O for more than 2 seconds, the side
windows and the sliding / pop-up roof will be closed. The
indicator lamp in the button lights up.
Switching off air recirculation and activating
convenience opening:
Press button O for more than 2 seconds, the side
windows and the sliding / pop-up roof return to the
position they were in before closing.
A window or the sliding / pop-up roof opened manually
after convenience closing will no longer be returned to
the position it was in before closing when convenience
opening is selected.The system automatically switches from air
recirculation to fresh air:
•after 30 minutes if the outside temperature is above
about 40
°F(5
°C),
•after 5 minutes if the outside temperature is below
about 40
°F(5
°C),
•after 5 minutes if economy mode S is selected.
The system switches automatically to air recirculation at
high outside temperatures. A quantity of outside air is
added after about 30 minutes.
If the windows should fog up from the inside, switch
from recirculated air back to fresh air.

154 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Activated charcoal filter
An activated charcoal filter markedly reduces bad odors
and removes pollutants from air entering the passenger
compartment.
To select, press e button. The indicator lamp in the
button illuminates.
To can cel, p res s b utton. The in di cator lamp i n t he button
goes out.
The system switches automatically to the air
recirculation mode, if the carbon monoxide (CO) or
nitrogen oxides (NO
X) concentration of the outside air
increases beyond a predetermined level.
The automatic air recirculation mode does not function
if economy mode S is selected or if the outside
temperature has fallen below 40
°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.Switching on the activated carbon filter and activating
convenience closing of power windows and sliding/
pop-up roof:
The indicator lamp in the e button is off.
Press button e for more than 2 seconds, the side
wi nd ows and t he slid in g / p op-up r oof will b e c los ed . The
indicator lamp in the button lights up.
Switching off activated carbon filter and activating
convenience opening:
The indicator lamp in the e button is on.
Press button e for more than 2 seconds, the side
windows and the sliding / pop-up roof return to the
position they were in before closing.
A window or the sliding / pop-up roof opened manually
after convenience closing will no longer be returned to
the position it was in before closing when convenience
opening is selected.

155 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Economy mode
The function of this setting corresponds to the
automatic mode. However, because the air conditioning
compressor will not engage (fuel savings), it is not
possible to air condition in this setting.
Press S button to activate. The indicator lamp in the
button illuminates.
Press S button once again to return to the previous
setting.
Important!
In the S mode the windows could fog up on the
inside. Switch off S mode.Automatic climate control - OFF/ON
To switch the climate control off, set the air volume
control switch to position 0.
The fresh air supply to the vehicle interior is shut off.
While driving, use this setting only temporarily,
otherwise the windshield could fog up.
To switch the climate control on again, press the U
or Pbutton, or set air volume control switch to any
speed.

156 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Residual engine heat utilization
With the engine switched off, it is possible to continue
to heat or ventilate the interior for a short while. Air
volume and distribution are controlled automatically.
To select:
Turn the electronic key in starter switch to position 1
or 0 or remove it altogether.
Press button T. The indicator lamp in the button
illuminates.
This function selection will not activate if the battery
level is insufficient. The function switches off automatically:
•if the electronic key in starter switch is turned to
position 2,
•after approximately 30 minutes,
•if the battery voltage drops.

157 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Rear window defroster
Turn the electronic key in starter switch to position 2.
To select:
Press the F button in the control panel of the
automatic air conditioner. The indicator lamp in the
button illuminates.
To c a nc el:
Press the F button in the control panel of the
automatic air conditioner. The indicator lamp in the
button goes out.
Note:
Heavy accumulation of snow and ice should be removed
before activating the defroster. The rear wind ow de fr oster us es a large amount of power.
To keep the battery drain to a minimum, turn off the
defroster as soon as the rear window is clear.
The defroster is automatically turned off after
approximately 6–17 minutes of operation depending on
the outside temperature and vehicle speed.
If several power consumers are turned on
simultaneously, or the battery is only partially charged,
it is possible that the defroster will automatically turn
itself off. When this happens, the indicator lamp inside
the switch starts blinking.
As soon as the battery has sufficient voltage, the
defroster automatically turns itself back on.

158 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Front center console storage compartment
ventilation
The front center console compartment has its own air
outlet.
To open: Raise lever (1).
To close: Lower lever (1).The air volume is dependent on the setting of:
•air distribution control,
•air volume control,
•air outlets in the dashboard.
The air temperature is about the same as that of the
dashboard air outlets. It cannot be regulated separately.
Notes:
The compartment can get very warm due to its confined
space. When storing heat sensitive objects in the
compartment, close the air outlet while heating the
passenger compartment.
Do not allow articles to obstruct the air outlet in the
storage compartment.

159 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Rear passenger compartment adjustable air outlets 1Center air outlet, left
2Air volume control for center air outlets
To open: Turn the wheel upward.
3Center air outlet, right
Note:
The temperature at the air outlets for the rear passenger
compartment (1 and 3) is the same as at the dashboard
center air outlets.

160 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Audio and telephone operation
These instructions are intended to help you become
acquainted with your Mercedes-Benz audio system.
They contain useful tips and a detailed description of
the user functions.Operating safety
1Optional equipment
Dolby and the double-D symbol
Ù
are trademarks of Dolby
Laboratories Licensing Corporation. The Dolby noise reduction
system is manufactured under licence from Dolby Laboratories
Licensing Corporation.
Wa r n i n g !
In order to avoid distraction which could lead to an
accident, system settings should be entered with
the vehicle at standstill and systems should be
operated by the driver only when traffic conditions
permit. Always pay full attention to traffic
conditions first before operating system controls
while driving. Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your car is covering a
distance of 50 feet (approximately14 m) every
second.
Wa r n i n g !
Any alterations made to electronic components can
cause malfunctions.The radio, cassette deck, CD changer
1 and
telephone
1 are interconnected. Therefore, when
one of the components is defective or has not been
removed/replaced properly this may impair the
function of other components.
These malfunctions might seriously impair the
operating safety of your vehicle.We recommend that you have any service work or
alterations to electronic components done at an
authorized Mercedes-Benz Center.

161 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Operating and display elements
1On/off, volume, see page 163
2Telephone mode selector, see page 177
3Seek tuning, see page 167,
Track search (tape), see page 171,
Skipping tracks (CD), see page 175
Manual repeat dialing (telephone), see page 1804Radio mode selector, see page 166
5Manual tuning, see page 167 and 167
Fast Forward/Reverse (tape), see page 171
Fast Forward/Reverse (CD), see page 176
Telephone book, see page 178
6CD mode selector, see page 175
7Tape mode selector, see page 169