2006 MERCEDES-BENZ C230 climate control

196 Controls in detailAutomatic climate control* (Canada only)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 button9 (
page 187).
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 condi-
tioning.

Press button9 (
page 187) again.
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.
iCondensation may drip out from under-
neath 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 itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.

197 Controls in detail
Automatic climate control* (Canada only)
Residual heat and ventilation
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.Activating

Switch off the ignition (
page 33).

Press button9 (
page 187).
The indicator lamp on the button
comes on.
Deactivating

Press button9 (
page 187).
The indicator lamp on the button goes
out.
The residual heat is automatically turned
off:


when the ignition is switched on


after about 30 minutes


if the battery voltage dropsRear passenger compartment
adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the auto-
matic climate control panel (
page 187).
iHow long the system will provide
heating depends on

the coolant temperature


the temperature set by the operator
The blower will run at speed setting 1
regardless of the air distribution
control setting.
iThe temperature at the center air vents
for the rear passenger
compartment1 and3 i s t h e s a m e a s
at the dashboard center air vents.

198 Controls in detailAutomatic climate control* (Canada only)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
corresponding direction.
Adjusting air volume

Turn thumbwheel2 up or down.
The air volume is increased or
decreased.iFor draft-free ventilation, push
slides1 and3 upward.

240 Controls in detailPower windowsOpening and closing the windows
The side windows are opened and closed
electrically. The switches for all the side
windows are on the driver’s door. The
switches for the respective windows are
on the front passenger door and the rear
doors.
1Left front window
2Right front window
3Right rear window
4Left rear window
5Rear window override switch
(
page 85)
Warning!
G
When closing the power windows, make
sure there is no danger of anyone being
harmed by the closing procedure.
The closing of the door windows can be im-
mediately halted by releasing the switch or,
if switch was pulled past the resistance
point and released, by either pressing or
pulling the respective switch.
If the window encounters an obstruction
t h a t b l o c k s i t s p a t h i n a c i r c u m s t a n c e w h e r e
you pulled the switch past the resistance
point and released it to close the window,
the automatic reversal function will stop the
window and open it slightly.
If the window encounters an obstruction
that blocks its path in a circumstance where
you are closing the window by pulling and
holding the switch, by pressing and holding
button‹ on the SmartKey, or by press-
ing and holding button, ore on the
climate control panel, the automatic rever-
sal function will not operate.
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment can cause an
accident and/or serious personal injury.

241 Controls in detail
Power windows

Switch on the ignition (
page 33).Opening the windows

Press switch1 to4 to the resistance
point.
The corresponding window will move
downwards until you release the
switch.
Closing the windows

Pull switch1 to4 to the resistance
point.
The corresponding window will move
upwards until you release the switch.Fully opening the windows
(Express-open)

Press switch1 to4 past the
resistance point and release.
The corresponding window opens
completely.
Fully closing the windows
(Express-close)

Pull switch1 to4 past the
resistance point and release.
The corresponding window closes
completely.
iYou can also open or close the power
windows using the SmartKey, see
“Summer opening feature”
(page 243) and “Convenience clos-
ing feature” (
page 243).
Depending on current position, the win-
dows may also open or close when the
air recirculation button, in the
control panel of the climate control
(
page 177) or automatic climate
control* (Canada only) (
page 187),
or the charcoal filter buttone in the
control panel of the automatic climate
control* (Canada only) (
page 194) is
pressed and held.
Warning!
G
If you pull and hold the switch up when
closing the window, and upward movement
of the window is blocked by some obstruc-
tion including but not limited to arms, hands,
fingers, etc., the automatic reversal will not
operate.

245 Controls in detail
Power tilt/sliding sunroof*

Switch on the ignition (
page 33).Opening and closing the power
tilt/sliding sunroof

To open, close, raise, or lower the
tilt/sliding sunroof, move the sunroof
switch to resistance point in the
required direction of arrows1 to4.
Release the sunroof switch when the
tilt/sliding sunroof has reached the
desired position.
Fully opening (Express-open) and
closing (Express-close) the power
tilt/sliding sunroof

To open or close the tilt/sliding
sunroof, move the sunroof switch past
the resistance point in the required
direction of arrow1 to4 and
release.
The tilt/sliding sunroof opens or closes
completely.
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment can cause an
accident and/or serious personal injury.!To avoid damaging the seals, do not
transport any objects with sharp edges
which can stick out of the tilt/sliding
sunroof.
Do not open the tilt/sliding sunroof if
there is snow or ice on the roof, as this
could result in malfunctions.
The tilt/sliding sunroof can be opened
or closed manually should an electrical
malfunction occur (
page 393).
iYou can also open or close the tilt/slid-
ing sunroof using the SmartKey, see
“Summer opening feature”
(page 243) and “Convenience clos-
ing feature” (
page 243).
Depending on current position, the
tilt/sliding sunroof may also open or
close when the air recirculation
button, in the control panel of the
climate control (page 177) or auto-
matic climate control* (Canada only)
(
page 192), or the charcoal filter
buttone in the control panel of the
automatic climate control* (Canada
only) (
page 194) is pressed and held.

329 Operation
Tires and wheels
Quality grades can be found, where appli-
cable, on the tire sidewall between tread
shoulder and maximum section width. For
example:
All passenger car tires must conform to
federal safety requirements in addition to
these grades.Treadwear
The treadwear grade is a comparative rat-
ing based on the wear rate of the tire when
tested under controlled conditions on a
specified government test course. For ex-
ample, a tire graded 150 would wear one
and one-half (1
1/2) times as well on the
government course as a tire graded 100.
The relative performance of tires depends
upon the actual conditions of their use,
however, and may depart significantly
from the norm due to variations in driving
habits, service practices and differences in
road characteristics and climate.Traction
The traction grades, from highest to low-
est, are AA, A, B, and C. Those grades rep-
resent the tire’s ability to stop on wet
pavement as measured under controlled
conditions on specified government test
surfaces of asphalt and concrete. A tire
marked C may have poor traction perfor-
mance.
Treadwear
Traction
Temperature
200
AA
A
Warning!
G
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning, or peak traction
characteristics.

455 Index
A
ABS 25, 87, 449
Indicator lamp 350
Messages in display 360
Accelerator position,
automatic transmission* 165
Accessory weight 331
Accident
In case of 56
Active head restraints
see Head restraints
Additional turn signals 398
Air bags 63
Children 64
Front passenger front air bag off
indicator lamp 27, 80, 356
Front, Driver 67
Front, Passenger 67
Passenger 67
Safety guidelines 66
Side impact (front and rear*) 68
Window curtain 68
Air conditioning refrigerant 442Air conditioning system
Automatic climate control*
(Canada only) 186
Climate control 176
Air conditioning, Cooling
Automatic climate control*
(Canada only) 196
Climate control 183
Air distribution
Automatic climate control*
(Canada only) 190
Climate control 180
Air pressure see Tire inflation pressure
Air recirculation mode
Automatic climate control*
(Canada only) 192
Climate control 182
Air vents, Front
Automatic climate control*
(Canada only) 187
Climate control 177
Air vents, Rear
Automatic climate control*
(Canada only) 198
Climate control 185Air volume
Automatic climate control*
(Canada only) 191
Climate control 180
Alignment bolt (vehicle tool kit) 408, 449
Anticorrosion/antifreeze 446, 447
Antiglare, Rear view mirror 170
Anti-theft systems 93
Anti-theft alarm system* 93
Immobilizer 93
Tow-away alarm* 95
Aquaplaning see Hydroplaning
Armrest 258
Ashtrays 261
Aspect ratio 331
ATF (Automatic transmission fluid) 300
AUDIO menu (Control system) 136
Audio system 199
Audio and telephone, operation 199
Button and soft key operation 202
CD changer* with MP3 218
CD operation 216