Page 173 of 464

173 Controls in detail
Climate control
The climate control is operational whenev-
er the engine is running. The system cools
or heats the interior depending on the se-
lected interior temperature and the cur-
rent outside temperature.
Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the interior through the air distribution
system.
The air conditioning will not engage (no
cooling) if the ±mode is selected
(page 175).
Item
1
Thumbwheel for air volume control
for adjustable left-side air vent
2
Left side air vent, adjustable
3
Left center air vent, fixed
4
Thumbwheel for air volume control
for fixed/adjustable left center air
vents
5
Left center air vent, adjustable
6
Right center air vent, adjustable
7
Thumbwheel for air volume control
for fixed/adjustable right center air
vents
8
Right center air vent, fixed
9
Right side air vent, adjustable
a
Thumbwheel for air volume control
for adjustable right-side air vent
b
Climate control panel
Warning
G
When operating the climate control, the air
that enters the passenger compartment
through the air vents in the footwell can be
very hot or very cold (depending on the set
temperature). This may cause burn or frost-
bite to unprotected skin in the immediate
area of the air vents. Always keep sufficient
distance between unprotected parts of the
body and the footwell air vents. If necessary
change the air flow using the air distribution
controls to direct the air away from the foot-
well air vents (
page 175).
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.
Page 176 of 464
176 Controls in detailClimate controlAdjusting air distribution
Use air distribution control3
(page 175) to adjust the air distribution.
The following symbols are found on the
control:
Adjusting air volume
Use air volume control2 to adjust the air
volume.
The following symbols are found on the
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 interior.
Symbol
Function
Z
Directs air to the windows
b
Directs air into the entire
vehicle interior
Y
Directs air to the footwells
a
Directs air through the
center and side air vents
Symbol
Function
0
No ventilation, climate
control switched off
between1
and5
Ventilation with increasing
blower speed
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.
Page 177 of 464

177 Controls in detail
Climate control
Activating
Press air recirculation switch,
(page 175).
The indicator lamp on the air recircula-
tion switch, comes on.Deactivating
Press air recirculation switch,
again (
page 175).
The indicator lamp on the air recircula-
tion switch, goes out.
iThe air recirculation mode activates au-
tomatically at high outside tempera-
tures.
A quantity of outside air is added after
approximately 30 minutes.iIf you press the air recirculation
switch, and keep it pressed, the
side windows will close.
Warning
G
Never operate the side windows if there is
the possibility of anyone being harmed by
the closing procedure.
In the event that the closing procedure caus-
es potential danger, the closing of the door
windows can be immediately halted by re-
leasing the, button or by pressing the
respective power window switch.
The closing of the rear side windows can be
immediately halted by releasing the
,button.
iThe air recirculation mode deactivates
automatically:
after 30 minutes if the outside tem-
perature is above approximately
41°F (5°C)
after five minutes if the outside
temperature is below approximate-
ly 41°F (5°C)
after five minutes if the air condi-
tioning is turned off (
page 178)
Page 178 of 464

178 Controls in detailClimate 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.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.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 air condition on/off switch°
(page 175).
The indicator lamp on the air condition
on/off switch° comes on.
iIf you press the air recirculation
switch, and keep it pressed
and no side window was operated
manually, the side windows will reopen
to their previous position.
iCondensation may drip 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 vehi-
cle will not be cooled when the weather con-
ditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
Page 183 of 464

183 Controls in detail
Automatic climate control*
The automatic climate control is operation-
al whenever the engine is running. You can
operate the automatic climate control sys-
tem in either the automatic or manual
mode. The system cools or heats the inte-
rior depending on the selected interior
temperature and the current outside tem-
perature.Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the interior through the air distribution
system.
The air conditioning will not engage (no
cooling) if the ±mode is selected
(
page 185).
Item
1
Thumbwheel for air volume control
for adjustable left-side air vent
2
Left side air vent, adjustable
3
Left center air vent, fixed
4
Thumbwheel for air volume control
for fixed/adjustable left center air
vents
5
Left center air vent, adjustable
6
Cockpit air vent
7
Thumbwheel for air volume control
for cockpit air vent
8
Right center air vent, adjustable
9
Thumbwheel for air volume control
for fixed/adjustable right center air
vents
a
Right center air vent, fixed
b
Right side air vent, adjustable
c
Thumbwheel for air volume control
for adjustable right-side air vent
d
Automatic climate control panel
Warning!
G
When operating the automatic climate con-
trol, the air that enters the passenger com-
partment through the air vents in the
footwell can be very hot or very cold (de-
pending on the set temperature). This may
cause burns or frostbite on unprotected skin
in the immediate area of the air vents. Al-
ways keep sufficient distance between un-
protected parts of the body and the footwell
air vents. If necessary change the air flow
using the air distribution controls to direct
the air away from the footwell air vents
(page 185).
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.
Page 186 of 464

186 Controls in detailAutomatic climate control*Decreasing
Press blue temperature control
switchƒborc.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
The selected temperature will be indi-
cated in displaye.
Adjusting air volume
Turn air volume control1
(page 185) to the desired position.
The indicator lamp on the automatic
mode switchU (
page 185) goes
out. The air volume is no longer adjust-
ed automatically.
The following symbols are found on the
control:
Adjusting air distribution
Turn air distribution control8
(page 185) to the desired position.
The indicator lamp on the automatic
mode switchU (
page 185) goes
out. The air distribution is no longer ad-
justed automatically.
The following symbols are found on the
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 interior.
Activating
Press air recirculation switch,
(page 185).
The indicator lamp on the air recircula-
tion switch, comes on.
Symbol
Function
between1
and6
Ventilation with increasing
blower speed
Symbol
Function
Z
Directs air to the windows
b
Directs air into the entire
vehicle interior
Y
Directs air to the footwells
a
Directs air through the
center, side and cockpit air
vents
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.
Page 187 of 464

187 Controls in detail
Automatic climate control*
Deactivating
Press air recirculation switch,
again (
page 185).
The indicator lamp on the air recircula-
tion switch, goes out.
iThe air recirculation mode activates au-
tomatically at high outside tempera-
tures.
A quantity of outside air is added after
approximately 30 minutes.iIf you press the air recirculation
switch, and keep it pressed, the
side windows will close.
Warning
G
Never operate the side windows if there is
the possibility of anyone being harmed by
the closing procedure.
In the event that the procedure causes po-
tential danger, the closing of the door win-
dows can be immediately halted by
releasing the, button or by pressing the
respective power window switch.
The closing of the rear side windows can be
immediately halted by releasing the
,button.
iThe air recirculation mode deactivates
automatically:
after 30 minutes if the outside tem-
perature is above approximately
41°F (5°C)
after five minutes if the outside
temperature is below approximate-
ly 41°F (5°C)
after five minutes if the air condi-
tioning is turned off (
page 188)
iIf you press the air recirculation
switch, and keep it pressed
and no side window was operated
manually, the side windows will reopen
to their previous position.
Page 188 of 464

188 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.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.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 air condition on/off switch±
(page 185).
The indicator lamp on air condition
on/off switch± comes on.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press air condition on/off switch±
(page 185).
The indicator lamp on the air condition
on/off switch± goes out.
Warning!
G
While driving, deactivate the air conditioning
only temporarily to prevent window fogging.iCondensation may drip from under-
neath the vehicle. This is normal and
not an indication of a malfunction.
!If the indicator lamp on the air condi-
tion on/off switch± comes on
while driving and you cannot switch on
the air conditioning again by pressing
the air condition on/off switch±,
the air conditioning is losing
refrigerant.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.