2005 MERCEDES-BENZ E320CDI Air condition

202 Controls in detailDual-zone automatic climate control
Residual heat and ventilation* (avail-
able on 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
Turn the SmartKey in the starter switch
to position0or1, or remove it from
the starter switch.

Press buttonT (
page 194).
The indicator lamp on button comes
on.Deactivating

Press buttonT (
page 194).
The indicator lamp on 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 con-
ditioning is losing refrigerant. The com-
pressor has turned itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting 1 regardless of the air distribu-
tion control setting.


206 Controls in detail4-zone automatic climate control*Depending on production date, your vehi-
cle is equipped with either climate control panel design A or B.Climate control panel design A1
Air distribution, left
2
Defrosting
3
Temperature rocker switch, left
4
Display
5
Temperature rocker switch, right
6
Rear window defroster
7
Air distribution, right
8
Air distribution and air volume, right
(automatic, manual)
9
AC cooling on/off
a
Rear air-conditioning remote control
b
Increase air volume
c
Climate control on/off
d
Decrease air volume
e
Residual heat/ventilation
f
Air recirculation
g
Air distribution and air volume, left
(automatic, manual)

207 Controls in detail
4-zone automatic climate control*
Climate control panel design B1
Air distribution, left
2
Defrosting
3
Temperature rocker switch, left
4
Display
5
Temperature rocker switch, right
6
Rear window defroster
7
Air distribution, right
8
Air distribution and air volume, right
(automatic, manual)
9
AC cooling on/off
a
Rear air-conditioning remote con-
trol
b
Increase air volume
c
Climate control on/off
d
Decrease air volume
e
Air recirculation
f
Air distribution and air volume, left
(automatic, manual)

209 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 AC
OFF
mode is activated or
AC mode is deactivated (
page 206).Deactivating the 4-zone automatic cli-
mate control system
Deactivating
It is possible to deactivate the climate con-
trol system.
Press buttonM (
page 206) or
button´ (
page 207) until the dis-
play is cleared.
The climate control system is deacti-
vated.
Reactivating

Press buttonM (
page 206) or
button´ (
page 207) again.
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 pollu-
tion) may require replacement of the fil-
ter 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.
Keep the air intake grille in front of the
windshield free of snow and debris.
Do not obstruct air flow by placing ob-
jects on the air flow-through exhaust
slots below the rear window.
iWhen the air conditioning is switched
off, the outside air supply and circula-
tion are also switched off. Only choose
this setting for a short time. Otherwise
the windows could fog up.

211 Controls in detail
4-zone automatic climate control*
Adjusting manually
Turn air distribution controls on each
side of the passenger compartment to
the desired symbol.
The indicator lamp in theU button
goes out.
Adjusting automatically

Press left or rightU button
(page 206) or (
page 207).
The indicator lamp in theU button
illuminates. The air distribution is ad-
justed automatically.
Windshield fogged on the outside

Switch the windshield wipers on.

Press the left or rightU button
(page 206) or (
page 207).
Adjusting air volume
Adjusting manually
Nine blower speeds are available.
Press
to decrease or Q
(page 206) or (
page 207) to in-
crease air volume to the desired level.
The
AUTO
display disappears and the
automatic mode is switched off. The
selected blower speed is shown in the
display.
Adjusting automatically

Press left or right U button
(page 206) or (
page 207).
The
AUTO
display appears and the air
volume is adjusted automatically.
Defrosting
Activating
Press buttonP(
page 206) or
button0 (
page 207).
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
iThese settings should only be selected
for a short time.

213 Controls in detail
4-zone automatic climate control*
Deactivating
Press buttonO (
page 206) or
(
page 207).
The indicator lamp on the button goes
out.The air recirculation mode is deactivated
automatically:


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


after five minutes if the air conditioning
is turned off


after 30 minutes if the outside temper-
ature 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.
Warning!
G
Never operate the side windows and
tilt/sliding sunroof* or tilt/sliding panel* if
there is the possibility of anyone being
harmed by the opening or closing proce-
dure.
In case the procedure causes potential dan-
ger:
Vehicles with tilt/sliding sunroof: The clos-
ing of the side windows can be immediately
halted by pressing or pulling the respective
window switch. The closing of the tilt/slid-
ing sunroof can be immediately halted by
moving the switch for the tilt/sliding sun-
roof in any direction.
The closing of the side windows and the
tilt/sliding sunroof can be reversed by again
pressing and holding theO button.
Vehicles with panorama roof: The closing of
the side windows and tilt/sliding panel can
be immediately halted by releasing theO
button.
iThe air recirculation mode is activated
automatically:

at high outside temperatures


if the concentration of carbon mon-
oxide and nitrogen oxide in the out-
side air increases, for example in a
tunnel
If you have turned off the air condition-
ing (page 206) or (
page 207) or
the outside temperature is below 41°F
(5°C), the air recirculation mode will
not switch on automatically.
iIf you keep buttonO pressed, the
side windows and the tilt/sliding sun-
roof* or tilt/sliding panel* will return to
their previous position.

214 Controls in detail4-zone automatic climate control*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 climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Climate control design A

Press button± (
page 206).
The indicator lamp on the button
comes on.
AC
OFF
in the display comes on.
The cooling function and heater boost-
er system (Diesel engine) (
page 217)
are switched off.
Climate control design B

Press button2 (
page 207).
The indicator lamp on the button goes
out.
The cooling function (page 217) is
switched off.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Climate control design A

Press button± (
page 206) again.
The indicator lamp on the button goes
out.
AC
OFF
in the display goes out.
Climate control design B

Press button2 (
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.
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.

215 Controls in detail
4-zone automatic climate control*
Residual heat and ventilation (available on 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
Turn the SmartKey in the starter switch
to position0 or1, or remove it from
the starter switch.

Press buttonT(
page 206).
REST in the display comes on.
Deactivating

Press buttonT(
page 206).
REST in the display 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 con-
ditioning is losing refrigerant. The com-
pressor has turned itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting 1 regardless of the air distribu-
tion control setting.