2007 MERCEDES-BENZ C350 air conditioning

Contents
Vehicle status
message memory menu ............... 130
Settings menu .............................. 131
Trip computer menu..................... 144
TEL menu* ................................... 146
Manual transmission ......................... 149
Shifting into reverse ..................... 150
Automatic transmission* ................... 151
Gear selector lever ....................... 151
Shifting procedure ....................... 152
Gear selector lever positions ....... 153
Driving tips ................................... 155
Gear ranges ................................. 156
Automatic shift program .............. 157
One-touch gearshifting................. 158
Emergency operation
(Limp-Home Mode) ...................... 159
Good visibility .................................... 160
Headlamp cleaning system* ........ 160
Rear view mirrors ......................... 160
Sun visors .................................... 161
Rear window sunshade* .............. 162
Rear window defroster ................. 163Climate control ................................... 164
Deactivating the
climate control system ................. 167
Operating the climate control
system in automatic mode............ 167
Setting the temperature................ 168
Adjusting air
distribution and volume ................ 168
Adjusting air volume ..................... 169
Front defroster.............................. 169
Air recirculation mode .................. 170
Air conditioning............................. 172
Rear passenger compartment
adjustable air vents....................... 173
Automatic climate control .................. 174
Deactivating the automatic
climate control system ................. 177
Operating the automatic
climate control system
in automatic mode ........................ 177
Setting the temperature................ 178
Adjusting air distribution............... 178
Adjusting air volume ..................... 179
Front defroster.............................. 179
Maximum cooling MAXCOOL ........ 180
Air recirculation mode .................. 181Charcoal filter ............................... 183
Air conditioning ............................ 184
Residual heat and ventilation
(Canada only)................................ 185
Rear passenger compartment
adjustable air vents ...................... 186
Audio system...................................... 187
Audio and telephone, operation .... 187
Operating safety ........................... 187
Operating and display elements ... 188
Button and soft key operation ...... 190
Operation...................................... 190
Radio operation ............................ 194
Introduction to satellite radio*
(USA only) ..................................... 197
CD mode....................................... 201
GSM network phones ................... 208
TDMA or CDMA network phones .. 214
Emergency calls “911” ................. 219
Power windows .................................. 221
Opening and closing
the windows ................................. 221
Synchronizing power windows ...... 222
Summer opening feature .............. 223
Convenience closing feature......... 223

Contents
Technical data.................................. 395
Parts service ...................................... 396
Warranty coverage ............................. 397
Loss of Service and Warranty
Information Booklet...................... 397
Identification labels............................ 398
Layout of poly-V-belt drive ................. 400
Engine ................................................ 401
Rims and Tires ................................... 403
Same size tires ............................. 404
Mixed size tires ............................ 405
Minispare wheel ........................... 406
Electrical system................................ 407
Main dimensions and weights............ 408
Main dimensions .......................... 408
Weights ........................................ 408Fuels, coolants, lubricants, etc. ......... 409
Capacities .................................... 409
Engine oils.................................... 412
Engine oil additives ...................... 412
Air conditioning refrigerant .......... 412
Brake fluid .................................... 412
Premium unleaded gasoline ......... 413
Gasoline additives ........................ 413
Fuel requirements ........................ 414
Flexible Fuel Vehicles
(C 230/C 230 Sport only) ............ 414
Coolants....................................... 416
Windshield washer and
headlamp cleaning system* ......... 418Index................................................. 419

166 Controls in detail
Climate control
The climate control is operational when-
ever the engine is running. You can oper-
ate the climate control system in either the
automatic or manual mode. The system
cools or heats the interior depending on
the selected interior temperature and the
current outside temperature.Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if theA/C mode is deactivated
(
page 172).
Warning!G
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature).
This may cause burns or frostbite on unpro-
tected skin in the immediate area of the air
vents. Always keep sufficient distance be-
tween unprotected parts of the body and the
air vents. If necessary, use the air distribu-
tion control (
page 168) to direct the air to
air vents in the vehicle interior that are not
in the immediate area of unprotected skin.
Warning!G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iSevere conditions (e.g. strong air pollution)
may require replacement of the filter before its
scheduled interval. A clogged filter will reduce
the air volume to the interior.
If the vehicle interior is hot, ventilate the interior
before driving off, see “Summer opening fea-
ture” (
page 223). The climate control will then
adjust the interior temperature to the set value
much faster.
Keep the air intake grille in front of the wind-
shield free of snow and debris.
Do not obstruct air flow by placing objects on the
air flow-through exhaust slots below the rear
window.

169 Controls in detail
Climate control
Press buttonU (page 165).
The indicator lamp on the button goes
out. The automatic air distribution is
switched off. The air distribution is
controlled according to the selected
control setting.
Turn air distribution control 4
(
page 165) to the desired symbol.
Opening center and side air vents
Turn thumbwheels 3, 4, 7 and 8
(
page 164) upward.
The center air vents 5 and 6 and side
air vents 2 and 9 are open.
Closing center and side air vents
Turn thumbwheels 3, 4, 7 and 8
(
page 164) downward.
The center air vents 5 and 6 and side
air vents 2 and 9 are closed.
Adjusting air volume
Six blower speeds are available.
Press buttonU (page 165).
The indicator lamp in the button goes
out. The automatic air volume control
is switched off. The air volume is
adjusted according to the currently
selected setting.
Use the air volume control1
(
page 165) to adjust the air volume.
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 or0
(
page 165).
The indicator lamp on the button
comes on.
The air conditioning switches
automatically to the following functions:

maximum blowing and heating
power

air flows onto the windshield and
the front side windows

the air recirculation mode is
switched off
iKeep this setting selected only until the
windshield or the side windows are clear again.

170 Controls in detail
Climate control
Deactivating
Press buttonP or0
(
page 165) again.
The indicator lamp on the button goes
out. Defrosting is turned off.
Windshield fogged on the outside
Switch the windshield wipers on
(
page 51).
If the automatic mode of the climate con-
trol is switched off:
Turn air distribution control4
toaorY (
page 165).
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e.g. before driving
through a tunnel). This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.Activating
Press button, (page 165).
The indicator lamp on the button
comes on.
iIf you have switched on the defrost function
using thePor0 button, you cannot
make any other settings.
iThe cooling remains switched on.
iKeep this setting selected only until the
windshield is clear again.
Warning!G
Fogged windows impair visibility, endanger-
ing you and others. If the windows begin to
fog on the inside, switching off the air
recirculation mode immediately should clear
interior window fogging. If interior window
fogging persists, make sure the air
conditioning (
page 172) is activated, or
press buttonP or 0.
iThe air recirculation mode is activated auto-
matically at high outside temperatures.
The indicator lamp on button, is not lit when
the air recirculation mode is automatically
switched on.
A quantity of outside air is added after approxi-
mately 30 minutes.

171 Controls in detail
Climate control
Deactivating
Press button, (page 165).
The indicator lamp on the button goes
out.
Air recirculation mode with conve-
nience closing or opening featureConvenience closingPress button, (page 165) for
approximately 2 seconds.
The windows and tilt/sliding sunroof*
will close. You can release button,
once the closing procedure has begun.
The windows and tilt/sliding sunroof*
continue closing until they are fully
closed. The indicator lamp on the but-
ton comes on. The air recirculation
mode is activated.
Convenience opening
Press button, for approximately
2 seconds.
The windows and tilt/sliding sunroof*
will return to their previous position.
You can release button , once the
opening procedure has begun. The win-
dows and tilt/sliding sunroof continue
opening until they have reached their
previous position. The indicator lamp
on the button goes out. The air recircu-
lation mode is deactivated.
iThe air recirculation mode is deactivated au-
tomatically:

after 5 minutes if the outside temperature is
below approximately 41°F (5°C)

after 5 minutes if the air conditioning is
turned off

after 30 minutes if the outside temperature
is above approximately 41°F (5°C)
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 air recirculation mode with
convenience closing feature, should the up-
ward movement of a window be blocked by
some obstructions including but not limited
to arms, hands, fingers. etc., the automatic
reversal 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, button.

172 Controls in detail
Climate control
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 climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Press button2 (page 165).
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button2 (page 165).
The indicator lamp on the button
comes on.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
iA side window or tilt/sliding sunroof* will
only return to its previous position if it has not
been moved to another position using the re-
spective side window switch or tilt/sliding sun-
roof* switch after it was closed with
button,. A side window or tilt/sliding sun-
roof* that was moved will remain in its current
position if button, is used to re-open the re-
maining side 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.
!If the air conditioning cannot be turned on
again, this indicates that the air conditioning is
losing refrigerant. The compressor has turned it-
self off.
Have the air conditioning checked at the nearest
authorized Mercedes-Benz Center.

173 Controls in detail
Climate control
Rear passenger compartment
adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the climate
control panel (
page 165).
The air vents for the rear passenger
compartment are located in the rear
center console.1Left center air vent
2Thumbwheel for air volume control for
center air vents
3Right center air ventAdjusting air distribution
Push the slide for the left center
vent1 or right center vent3 to the
left, right, up, or down.
The air flow is directed in the corre-
sponding direction.
Adjusting air volume
Turn thumbwheel2 up or down.
The air volume is increased or
decreased.
iThe temperature at the center air vents1
and3 for the rear passenger compartment is
the same as at the dashboard center air vents.
iFor draft-free ventilation, move the sliders
for the center air vents1 and3 upward.