2004 MERCEDES-BENZ E500 Air condition

182 Controls in detailClimate controlAir 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.
Press button± (
page 176).
The indicator lamp on the button±
comes on.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.

Press± again (
page 176).
The indicator lamp on the button±
goes out.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
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
Turn the SmartKey in the starter switch
to position0or1, or remove it from
the starter switch.

Press buttonT (
page 176).
The indicator lamp on buttonT
comes on.
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.
!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.

186 Controls in detailAutomatic climate control*
Item
1
Air distribution, left
2
Defrosting
3
Temperature rocker switch, left
4
Display
5
Temperature rocker switch, right
6
Rear window defroster
Item
7
Air distribution, right
8
Air distribution and air volume, right
(automatic, manual)
9
Activated charcoal filter
a
Rear air-conditioning remote con-
trol
b
Increase air volume
Item
c
Automatic climate control on / off
d
Decrease air volume
e
AC cooling on / off (AC
OFF
)
Residual heat / ventilation (REST)
f
Air recirculation
g
Air distribution and air volume, left
(automatic, manual)

188 Controls in detailAutomatic 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 selected
(
page 186).
Setting the temperature
Use temperature control3 for the left
side or5 for the right side to separately
adjust the air temperature on each side of
the passenger compartment. You should
raise or lower the temperature setting in
small increments, preferably starting
at 72°F (22°C).
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 operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.

191 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 buttonO.
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.iIf you keep buttonO pressed, the
side windows and the sliding / pop-up
roof* or panorama sliding / pop-up
roof* or will close.
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 (charcoal filter activated
(page 192))
If you have turned off the air condition-
ing (page 182) or the outside
temperature is below 41°F (5°C), the
air recirculation mode will not switch
on automatically.
Warning!
G
Never operate the windows and
sliding / pop-up roof* or panorama
sliding / pop-up roof* if there is the possibil-
ity of anyone being harmed by the opening
or closing procedure.
In case the procedure causes potential dan-
ger:
Vehicles with sliding/pop-up roof: The pro-
cedure for the windows can be immediately
halted by pressing or pulling the respective
window switch. The procedure for the slid-
ing/pop-up roof can be immediately halted
by moving the switch for the sliding/pop-up
roof in any direction.
The closing of the side windows and the slid-
ing/pop-up roof can be reversed by again
pressing and holding theO button.
Vehicles with panorama sliding/pop-up
roof: The procedure for the windows and
panorama sliding/pop-up roof can be imme-
diately halted by releasing theO button.

192 Controls in detailAutomatic climate control*Deactivating
Press buttonO.
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 (AC
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.
Charcoal filter
An activated charcoal filter markedly re-
duces bad odors and removes pollutants
from air entering the passenger compart-
ment.
Activating
Press buttone.
The indicator lamp on the button
comes on.
iIf you keep buttonO pressed, the
side windows and the sliding / pop-up
roof* or panorama sliding / pop-up
roof* will return to their previous posi-
tion.
iIf you keep buttone pressed, the
side windows and the sliding / pop-up
roof* or panorama sliding / pop-up
roof* will close.
Warning!
G
Never operate the side windows and
sliding / pop-up roof* or panorama
sliding / pop-up roof* if there is the possibil-
ity of anyone being harmed by the opening
or closing procedure.
Vehicles with sliding/pop-up roof: The pro-
cedure for the windows can be immediately
halted by pressing or pulling the respective
window switch. The procedure for the slid-
ing/pop-up roof can be immediately halted
by moving the switch for the sliding/pop-up
roof in any direction.
The closing of the side windows and the slid-
ing/pop-up roof can be reversed by again
pressing and holding the ebutton.
Vehicles with panorama sliding/pop-up
roof: The procedure for the windows and
panorama sliding/pop-up roof can be imme-
diately halted by releasing the ebutton.

194 Controls in detailAutomatic 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 automatic
climate control system. The air in the vehi-
cle will then no longer be cooled or dehu-
midified.
Press button°.
The indicator lamp on the button°
comes on.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.

Press° again.
The indicator lamp on the°button
goes out.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
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
Turn the SmartKey in the starter switch
to position0 or1, or remove it from
the starter switch.

Press button°.
The indicator lamp on button°
comes on.
Deactivating

Press button°.
The indicator lamp on button°
goes out.
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.
!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.

195 Controls in detail
Automatic climate control*
The residual heat is automatically turned
off

when the ignition is switched on


after about 30 minutes


if the battery voltage drops
Rear air conditioning
1Left rear center air vent, adjustable
2Right rear center air vent, adjustable
3Thumbwheel for air volume control for
right rear center air vent
4Temperature rocker switch, right
5Display
6Temperature rocker switch, left
7Thumbwheel for air volume control for
left rear center air vent
Display1Temperature, left
2Temperature, right
Basic settings
We recommend setting the temperature
on both the left- and right-hand sides to
72°F. This ensures a pleasant temperature
in the rear of the vehicle.
The temperatures for the left- and
right-hand sides can be set using tempera-
ture rocker switches4 and6.
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.

196 Controls in detailAutomatic climate control*Adjusting the rear settings with the
front control panelDisplay
Press the™ button (
page 186).
The display switches over.The temperature for the rear left- and
right-hand sides of the vehicle can be set
with temperature rocker switches3
and5.
The temperature display disappears ap-
proximately five seconds after the last
SmartKey confirmation and switches back
to the normal display.
iThe rear air conditioning will not cool
the air when AC
OFF
mode has been se-
lected in the front control panel.
iThe normal display will appear when
the™ button is pressed again.