climate control MERCEDES-BENZ C CLASS COUPE 2005 Owner's Manual

188 Controls in detailAutomatic climate control*Defrosting
Activating
Press buttonP or0
(page 183).
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 Deactivating

Press button
P or0
(page 183).
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are once again in
effect.
Maximum cooling MAXCOOL
If the left and right air distribution controls
as well as the airflow volume control are
set to U (
page 183) and there is a
high need for cooling, the display
“MAXCOOL” appears.
This provides the fastest possible cooling
of the vehicle interior (when side windows
and panorama roof with power tilt/sliding
panel* are closed).
iThese settings should only be selected
for a short time.

189
Controls in detail
Automatic climate control*
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
, (
page 183).
The indicator lamp on the button
comes on.
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.
Window fogging may impair visibility and
endanger you and others.
iIf you keep button , pressed, the
side windows and panorama roof with
power tilt/sliding panel* will close.Warning!
G
Never operate the side windows and the
panorama roof with power tilt/sliding pan-
el* if there is the possibility of anyone being
harmed by the closing procedure.
Vehicles without panorama roof with power
tilt/sliding panel*:
In the event that the procedure causes
potential danger, the opening and closing of
the side windows can be immediately halted
by pressing or pulling the respective window
switch.
Vehicles with panorama roof with power
tilt/sliding panel*:
In the event that the procedure causes po-
tential danger, the opening and closing of
the side windows can be immediately halted
by releasing the , button or
by pressing or pulling the respective window
switch. The opening and closing of the pan-
orama roof with power tilt/sliding panel*
can be immediately halted by releasing the
, button or by moving the panorama
roof with power tilt/sliding panel switch in
the overhead control panel in any direction.

190 Controls in detailAutomatic climate control*
Deactivating
Press button, (
page 183).
The indicator lamp on the button goes
out. The air recirculation mode is deactivated
automatically:


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


after five minutes if the air conditioning
is turned off


after 30 minutes if the outside
temperature 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.
iThe air recirculation mode is activated
automatically:

at high outside temperatures


if the concentration of carbon mon-
oxide and nitrogen oxide in the
outside air increases, for example
in a tunnel (charcoal filter must be
activated for the air recirculation
mode to be activated automatically)
The indicator lamp on the button ,
is not lit when the air recirculation
mode is automatically switched on.
After approximately 30 minutes, out-
side air is added to the air inside the
vehicle.
If you have turned off the air
conditioning (
page 192) or the out-
side temperature is below 41°F (5°C),
the air recirculation mode will not
switch on automatically.
iIf you keep button , pressed, the
side windows and panorama roof with
power tilt/sliding panel* will return to
their previous position.

191
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

carbon monoxide (CO)
or


nitrogen oxide (NO
X)
concentration of the outside air increases
beyond a predetermined level. Activating

Press button
e (
page 183).
The indicator lamp on the button
comes on.
iThe automatic air recirculation mode
does not function if the AC
OFF
mode
is activated (indicator lamp on
button ° illuminated) or A/C mode
is deactivated (indicator lamp on
button 2 not lit), or if the
outside temperature has fallen
below 41°F (5°C).
iIf you keep button e pressed, the
side windows and panorama roof with
power tilt/sliding panel* will close.iThe activated charcoal filter should be
switched off when windows fog up on
the inside, or if the passenger compart-
ment needs to be quickly heated or
cooled down.Warning!
G
Never operate the side windows and the
panorama roof with power tilt/sliding pan-
el* if there is the possibility of anyone being
harmed by the closing procedure.
Vehicles without panorama roof with power
tilt/sliding panel*:
In the event that the procedure causes
potential danger, the opening and closing of
the side windows can be immediately halted
by pressing or pulling the respective window
switch.
Vehicles with panorama roof with power
tilt/sliding panel*:
In the event that the procedure causes po-
tential danger, the opening and closing of
the side windows can be immediately halted
by releasing the e button or by pressing
or pulling the respective window switch. The
opening and closing of the panorama roof
with power tilt/sliding panel* can be imme-
diately halted by releasing the e button
or by moving the panorama roof with power
tilt/sliding panel switch in the overhead
control panel in any direction.

192 Controls in detailAutomatic climate control*Deactivating
Press buttone (
page 183).
The indicator lamp on the button goes
out.
Air 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 automatic
climate control system. The air in the
vehicle will then no longer be cooled or
dehumidified.
Automatic climate control panel
design A

Press button
° (
page 183).
The indicator lamp on the button
comes on.
The cooling function switches off after
a short delay.
Automatic climate control panel
design B

Press button 2 (
page 183).
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.
iIf you keep button e pressed, the
side windows and panorama roof with
power tilt/sliding panel* will return to
their previous position.
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.

193
Controls in detail
Automatic climate control*
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condi-
tioning.
Automatic climate control panel
design A
Press button
° (
page 183) again.
The indicator lamp on the button goes
out.
The cooling function is switched on.
Automatic climate control panel
design B

Press button 2 (
page 183) again.
The indicator lamp on the button
comes on.
The cooling function is switched on.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer. Residual heat and ventilation
(available on automatic climate control
panel design A only)
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 58).

Press button
° (
page 183).
The indicator lamp on the button
comes on. Deactivating

Press button
° (
page 183).
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 drops
!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.
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.

194 Controls in detailAutomatic climate control*Rear passenger compartment adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the auto-
matic climate control panel (
page 183).
The air vents for the rear passenger
compartment are located in the rear
center console. 1
Left center air vent
2 Thumbwheel for air volume control for
center air vents
3 Right center air vent Adjusting air distribution

Push the slide for the left center
vent
1 or right center vent 3 to the
left, right, up, or down.
The air flow is directed in the
corresponding direction.
Adjusting air volume

Turn thumbwheel 2 up or down.
The air volume is increased or
decreased.
iThe temperature at the center air vents
for the rear passenger
compartment 1 and 3 i s t h e s a m e a s
at the dashboard center air vents.
iFor draft-free ventilation, push
slides 1 and 3 upward.

238 Controls in detailPower windows
Switch on the ignition (
page 33).Opening the windows

Press switch
1 or 2 to the resistance
point.
The corresponding window will move
downwards until you release the
switch.
Closing the windows

Pull switch 1 or 2 to the resistance
point.
The corresponding window will move
upwards until you release the switch. Fully opening the windows
(Express-open)

Press switch
1 or 2 past the resis-
tance point and release.
The corresponding window opens com-
pletely.
Fully closing the windows
(Express-close)

Pull switch 1 or 2 past the resis-
tance point and release.
The corresponding window closes com-
pletely.
iYou can also open or close the power
windows using the SmartKey (summer
opening/convenience closing feature)
(page 239).
You can close and reopen the windows
using the air recirculation button ,
in the climate control panel
(page 173) or automatic climate
control panel (
page 183).
You can close and reopen the windows
using the charcoal filter button e in
the automatic climate control
panel*(
page 183).
Warning
G
If you pull and hold the switch up when clos-
ing the window, and upward movement of
the window is blocked by some obstruction
including but not limited to arms, hands, fin-
gers, etc., the automatic reversal will not op-
erate.

244 Controls in detailPanorama roof with power tilt/sliding panel*
Switch on the ignition (
page 33).Opening and closing the panorama roof
with power tilt/sliding panel

To open, close, raise, or lower the
tilt/sliding panel, move the roof panel
switch to resistance point in the re-
quired direction of arrows
1to4 .
Release the roof panel switch when the
tilt/sliding panel has reached the de-
sired position.
Fully opening (Express-open) the
panorama roof with power tilt/sliding
panel

Move the roof panel switch past the
resistance point in the direction of
arrow 4 and release.
The tilt/sliding panel opens
completely.
Stopping the panorama roof with power
tilt/sliding panel during Express-open

Move the roof panel switch in any
direction. Opening the panorama roof with power
tilt/sliding panel with the SmartKey
The power windows (
page 237) will also
be opened or closed when you operate the
tilt/sliding panel with the SmartKey.
iYou can also open or close the tilt/slid-
ing panel using the SmartKey (summer
opening/convenience closing feature)
(page 244).
You can close and reopen the tilt/slid-
ing panel using the air recirculation
button , in the climate control pan-
el (page 173) or automatic climate
control panel (
page 183).
You can close and reopen the tilt/slid-
ing panel using the charcoal filter but-
ton e in the automatic climate
control panel*(page 183).
Warning!
G
Never operate the windows or tilt/sliding
panel if there is the possibility of anyone be-
ing harmed by the opening or closing proce-
dure.
In the event that the procedure causes po-
tential danger, the procedure can be imme-
diately halted by releasing the button on the
SmartKey. To reverse direction of move-
ment, press Œ for opening or ‹ for
closing.

321
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.