2007 MERCEDES-BENZ E320 BLUETEC window

218 Controls in detailDual-zone automatic climate controlActivating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button2 (
page 206) or
(
page 207) 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.Residual heat and ventilation
(Canada 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.

Press buttonT (
page 207).
REST
in the display4 (
page 207)
comes on.
Deactivating

Press buttonT (
page 207) again.
REST
in the display4 (
page 207)
goes out.
!
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.
i
If you switch on the residual heat function
when temperatures are high, only the ventilation
will be switched on.
i
Regardless of the selected air volume, the
blower operates at low speed.
i
How long the system will provide heating de-
pends on


the coolant temperature


the temperature set by the operator
The blower will run at speed setting1 regardless
of the air distribution control setting.
i
The residual heat is automatically turned off:


when the ignition is switched on


after about 30 minutes


if the battery voltage drops


if the coolant temperature is too low

222 Controls in detail4-zone automatic climate controlUSA only1
Air distribution, driver’s side
2
Front defroster
3
Temperature rocker switch, driver’s
side
4
Display
5
Temperature rocker switch,
passenger side
6
Rear window defroster
7
Air distribution, passenger side
8
Air distribution and air volume,
passenger side (automatic, manual)
9
AC cooling on/off
a
Rear air-conditioning remote control
b
Increasing air volume
c
Climate control on/off
d
Decreasing air volume
e
MAX COOL on/off
f
Air recirculation
g
Air distribution and air volume,
driver’s side (automatic, manual)

223 Controls in detail
4-zone automatic climate control
Canada only1
Air distribution, driver’s side
2
Front defroster
3
Temperature rocker switch, driver’s
side
4
Display
5
Temperature rocker switch,
passenger side
6
Rear window defroster
7
Air distribution, passenger side
8
Air distribution and air volume,
passenger side (automatic, manual)
9
AC cooling on/off
a
Rear air-conditioning remote control
b
Increasing air volume
c
Climate control on/off
d
Decreasing air volume
e
Residual heat/ventilation
f
Air recirculation
g
Air distribution and air volume,
driver’s side (automatic, manual)

225 Controls in detail
4-zone automatic climate control
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 the A/Cmode (
page 234) is
deactivated.Deactivating the climate control
system
Deactivating
Press button´ (
page 222) or
(
page 223) until the display4
(page 222) or (
page 223) is
cleared.
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.
i
Severe 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 239). 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.
Warning!
G
When the climate control is switched off, the
outside air supply and circulation 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.

226 Controls in detail4-zone automatic climate controlReactivating
Make sure the ignition is switched on.

Press button´ (
page 222) or
(
page 223) again.
The previous settings are once again in
effect.Operating the climate control system
in automatic modeActivating

Press one buttonU (
page 222) or
(
page 223) while the engine is run-
ning.
The indicator lamp on the button
comes on.
AUTO
appears in the
display4 (
page 222) or
(
page 223). The air volume and air
distribution are adjusted automatically.

Use temperature rocker switches3
and5 (
page 222) or (
page 223)
to separately adjust the air tempera-
ture on each side of the passenger
compartment.
The temperature of the vehicle interior
is adjusted automatically.
i
To switch the system on, you can also press
another button, with the exception of 1
(USA only) (
page 222) or F and T
(Canada only) (page 223).
i
When operating the climate control system
in automatic mode, you will only rarely need to
adjust the temperature, air volume and air distri-
bution.
In automatic mode, cooling with dehumidify is
switched on. This function can be switched off.Warning!
G
If you switch off the cooling function the
windows can fog up more quickly. Window
fogging may impair visibility and endanger
you and others.i
You can switch the automatic climate con-
trol system on and off for each side of the pas-
senger compartment as desired.

229 Controls in detail
4-zone automatic climate control
Adjusting air volume
Use buttonsU (
page 222) or
(
page 223) for automatic mode or air
volume buttons
orQ
(page 222) or (
page 223) to adjust air
volume manually.
Nine blower speeds are available.

Press button
to decrease or
buttonQ to increase air volume to
the desired level.
The
AUTO
indicator for air volume in the
display4 (
page 222) or
(
page 223) goes out. The selected
blower speed is shown in the
display4. Automatic air distribution
remains switched on.
The indicator lamps on the U but-
tons remain lit.
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
windows.
Activating
Press button0 or P
(page 222) or (
page 223).
The indicator lamp on the button
comes on. Display4 (
page 222) or
(
page 223) is cleared.The air conditioning switches
automatically to the following functions:


cooling on to dehumidify


maximum blowing and heating power
(depends on cooling temperature)


air flows onto the windshield and the
front windows


the air recirculation mode is switched
off
Deactivating

Press button0 or P
(page 222) or (
page 223) again.
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are once again in
effect.
i
Keep this setting selected only until the
windshield or the windows are clear again.
i
If you have switched on the defrost function
using the0 or P button, you cannot make
any other settings.
i
The cooling remains switched on.

230 Controls in detail4-zone automatic climate controlWindshield fogged on the outside
Switch the windshield wipers on
(page 58).
If the automatic mode of the climate con-
trol is switched off:

Turn air distribution controls1 and 7
to a or Y (
page 222) or
(
page 223).Maximum cooling MAX COOL
(USA only)
You can use this setting to provide the fast-
est possible cooling of the vehicle interior
(when windows and tilt/sliding sunroof or
tilt/sliding panel* are closed).
Activating
Press buttone (
page 222).
MAX COOL
appears in the display4
(
page 222).
The air conditioning switches
automatically to the following functions:


maximum cooling


maximum blowing power


the air recirculation mode is switched
onDeactivating

Press buttone (
page 222) again.
MAX COOL
disappears in the display4
(
page 222).
The previous settings are once again in
effect.
i
Keep this setting selected only until the
windshield is clear again.
i
To switch the maximum cooling function off,
you can also press button ´, U, 0 or
1 (
page 222).

231 Controls in detail
4-zone automatic climate control
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 222) or
(
page 223).
The indicator lamp on the button
comes on.Deactivating

Press button, (
page 222) or
(
page 223) again.
The indicator lamp on the button goes
out.
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 233) is activated, or
press buttonP or0.
i
The air recirculation mode is activated auto-
matically at high outside temperatures and if the
concentration of carbon monoxide (CO) and ni-
trogen oxide in the outside air increases, for ex-
ample in a tunnel.
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.
i
The 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)