2007 MERCEDES-BENZ C350 switches

177 Controls in detail
Automatic climate control
Deactivating the automatic climate
control system
Deactivating
Press button´ (page 175).
The indicator lamp on the button
comes on.
Reactivating
Press button´ (page 175).
The indicator lamp on the button goes
out. The previous settings are once
again in effect.Operating the automatic climate con-
trol system in automatic mode
Activating
Press buttonU (page 175) while
the engine is running.
The indicator lamp on the button
comes on. The air volume and air distri-
bution are adjusted automatically.1Temperature, left
2Blower speed
3Temperature, right
Use temperature controls3 and
dor6 and b (
page 175) to sepa-
rately adjust the air temperature on
each side of the passenger compart-
ment.
The temperature of the vehicle interior
is adjusted automatically.
Deactivating
Press buttonU (page 175) again.
The indicator lamp on the button goes
out. The automatic operation of air vol-
ume and air distribution switches off.
Warning!G
When the automatic climate control is
switched off, the outside air supply and cir-
culation are also switched off. Only choose
this setting for a short time. Otherwise the
windows could fog up, impairing visibility
and endangering you and others.
iWhen operating the automatic climate con-
trol system in automatic mode, you will only rare-
ly need to adjust the temperature, air volume
and air distribution.
In automatic mode, the dehumidify function is
switched on when the system is cooling. If nec-
essary, this function can be switched off by
pushing the button2 or 9 (
page 175).
iYou can switch the automatic climate con-
trol system on and off for each side of the pas-
senger compartment as desired.

179 Controls in detail
Automatic climate control
The automatic air distribution is
switched off. The air distribution is
controlled according to the selected
control setting.
Opening center and side air vents
Turn thumbwheels 3, 4, 7 and 8
(
page 174) upward.
The center air vents 5 and 6 and side
air vents 2 and 9 (
page 175) are
open.
Closing center and side air vents
Turn thumbwheels 3, 4, 7 and 8
(
page 174) downward.
The center air vents 5 and 6 and side
air vents 2 and 9 (
page 174) are
closed.
Adjusting air volume
Use buttonU (
page 175) for auto-
matic mode or air volume controls

orQ (
page 175) to adjust air volume
manually.
Seven blower speeds are available.
Press button
to decrease
orQ (
page 175) to increase air
volume to the desired level.
The indicator lamp on the buttonU
goes out.
The automatic air distribution remains
switched on.
Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up.
You can also defog the windshield and the
side windows.
Activating
Press buttonP or 0
(
page 175).
The indicator lamp on the button
comes on.
The air conditioning switches
automatically to the following functions:

cooling on to dehumidify

maximum blowing and heating
power

air flows onto the windshield and
the front side windows

the air recirculation mode is
switched off
iYou can also turn the air distribution control
to a position between two symbols.
iKeep this setting selected only until the
windshield or the side windows are clear again.

183 Controls in detail
Automatic climate control
Charcoal filter
An activated charcoal filter markedly
reduces bad odors and removes pollutants
from air entering the passenger compart-
ment. The charcoal filter can be activated
or deactivated.
The system switches automatically to the
air recirculation mode, if the

charcoal filter is switched on

carbon monoxide (CO) or nitrogen
oxide (NO
X) concentration of the out-
side air increases beyond a predeter-
mined levelActivating
Press buttone (page 175).
The indicator lamp on the button
comes on.
iThe automatic air recirculation mode does
not function if theA/C mode is deactivated (in-
dicator lamp on button2 or 9 not lit), or
if the outside temperature has fallen below 41°F
(5°C).
iIf you press and hold buttone, the side
windows and tilt/sliding sunroof* will close.
iThe 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.
Warning!G
Never operate the side windows and the
tilt/sliding sunroof* if there is the possibility
of anyone being harmed by the closing pro-
cedure.
When using the charcoal filter with conve-
nience closing feature, should the upward
movement of a window be blocked by some
obstructions including but not limited to
arms, hands, fingers. etc., the automatic re-
versal feature will not operate.
In the event that the closing procedure
causes potential danger, the closing of the
side windows can be immediately halted by
pressing or pulling the respective window
switch. The closing of the tilt/sliding
sunroof* can be immediately halted by
moving the tilt/sliding sunroof* switch in
the overhead control panel in any direction.
The closing of the side windows and
tilt/sliding sunroof* can be reversed by
again pressing and holding the buttone.

184 Controls in detail
Automatic climate control
Deactivating
Press buttone (page 175).
The indicator lamp on the button goes
out.
Air conditioning
The cooling function, only operational
when the engine is running, cools the vehi-
cle interior down to the selected tempera-
ture. The cooling function also
dehumidifies the air in the vehicle interior,
thus preventing the windows from fogging
up.Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the automatic
climate control system. The air in the
vehicle will then no longer be cooled or
dehumidified.
Press button2 or9
(
page 175).
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.
iPress and hold buttone for approx.
2 seconds. The side windows and or tilt/sliding
sunroof* will return to their previous position.
You can release buttone once the opening
procedure has begun. The windows and tilt/slid-
ing sunroof* continue opening until they have
reached their previous position.
A window or tilt/sliding sunroof* will only return
to its previous position if it has not been moved
to another position using the respective window
switch or tilt/sliding sunroof* switch after it was
closed with buttone. A window or tilt/slid-
ing sunroof* that was moved will remain in its
current position if buttone is used to
re-open the remaining windows or tilt/sliding
sunroof*.
iCondensation may drip out from underneath
the vehicle. This is normal and not an indication
of a malfunction.
Warning!G
If you turn off the cooling function, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog
up more quickly. Window fogging may
impair visibility and endanger you and
others.

191 Controls in detail
Audio system
Adjusting sound functions
The bass and treble functions are called up
by pressing the O button.
Settings for bass and treble are stored
separately for the AM and FM wavebands,
weather band, CD mode and telephone
mode.
Bass
Press O button repeatedly until
BASS appears in the display.
Press + or– soft key to increase or
decrease tone level accordingly.
or
Press RES soft key briefly to reset bass
tones to their center level.The radio switches back to the
standard radio menu 8 seconds after
the last soft key is pressed.
Adjusting treble
Press O button repeatedly until
TREBLE appears in the display.
Press + or– soft key to increase or
decrease tone level accordingly.
or
Press RES soft key briefly to reset treble
tones to their center level.
The radio switches back to the
standard radio menu 8 seconds after
the last soft key is pressed.Sound system*
You can either program the sound settings
manually (
page 191) or choose settings
via preset sound characteristics.
You can select from among the following
settings:

STANDARD: conventional stereo sound.

SURROUND: the sound is set for better
three-dimensional acoustic character-
istics.

SPEECH: the sound is optimized for the
spoken word.
Press O button repeatedly until
STANDARD, SURROUND, or SPEECH appears
in the display.
Press X or Y soft key repeatedly
until the desired sound setting has
been reached.
The sound is set accordingly.
or


192 Controls in detail
Audio system
Press RES soft key briefly.
The sound setting is reset depending
on the sound source activated.

Radio mode: STANDARD

CD/AUX mode: SURROUND

Telephone: SPEECH
The radio switches back to the
standard radio menu 8 seconds after
the last soft key is pressed.
Returning sound functions to factory
settings
Press O button to call up settings
menu in the display.
Press RES soft key briefly; the respec-
tive sound function is reset to its center
level.
or
Press and hold RES soft key until RESET
appears in the display.
The sound settings for bass and treble
are returned to their center level and
the volume is set to a predefined level.
Vehicles with sound system*:
The sound setting is reset depending
on the sound source activated.

Radio mode: STANDARD

CD/AUX mode: SURROUND

Telephone: SPEECH
The radio switches back to the
standard radio menu 4 seconds
after the last soft key is pressed.
Adjusting volume distribution
Call up fader and balance functions by
pressing the P button.Fader
Press P button repeatedly until
FADER appears in the display.
Press V or W soft key.
The volume is distributed accordingly
between the front and rear of the
vehicle.
or
Press RES soft key briefly.
The fader is reset to its center level.
The radio switches back to the
standard radio menu 8 seconds after
the last soft key is pressed.


193 Controls in detail
Audio system
Adjusting balance
Press P button repeatedly until
BALANCE appears in the display.
Press X or Y soft key.
The volume is distributed between the
left and right sides of the vehicle.
or
Press RES soft key briefly.
The balance is reset to its center level.
The radio switches back to the
standard radio menu 8 seconds after
the last button is pressed.Returning volume distribution to
factory settings
Press P button to call up settings
menu in the display.
Press RES soft key briefly; the
respective volume distribution is reset
to its center (flat) level.
or
Press and hold RES soft key until RESET
appears in the display.
The volume distribution settings for
fader and balance are set to their
center level.
The radio switches back to the
standard radio menu 4 seconds after
the last soft key is pressed.Telephone* muting
If your vehicle equipment includes a
Mercedes-Benz specified mobile
telephone*, you can adjust its volume
separately from the volume of the audio
system while the telephone is being used.
Connecting an external audio source
(AUX) to the radio*
An optional dealer-installed cinch-connec-
tor* for connecting an external audio
source may become available for your
vehicle model. Feature description is
based on preliminary information at time
of printing. Contact an authorized
Mercedes-Benz Center for availability.
You can adjust the volume (page 190),
the sound settings (
page 191) and the
volume distribution (
page 192) for the
AUX input.
Calling up AUX mode
Press and hold Q button until AUX
appears in the display.

196 Controls in detail
Audio system
Autostore – automatic station memory
The Autostore memory function provides
an additional memory level. The station
memory for manually stored stations is not
overwritten.

Calling up Autostore memory level and
storing stations
Press AS soft key briefly.
The radio switches to the Autostore
memory level.
AS and SEARCH
appear in the display and the radio
finds the ten stations with the
strongest signals. These stations
are stored on the station
buttons1 to R in order of
signal strength.

Calling up stations
Press desired station button1
to R.

Leaving the Autostore memory level
Press FM or AMsoft key briefly.
Interrupting radio mode
The radio mode is interrupted by an
incoming call on the telephone*
(
page 212).

Mute on
Press U button.
The radio mode is interrupted and
MUTED appears in the display.

Mute off
Press U button.
The radio mode is again active.Weather band
Press WB soft key.
The weather band station last received
is tuned in.
Selecting a weather band station
directly
Select desired weather band station
with buttons 1 to 7.
If a station cannot be tuned in, a search
is automatically started.