Page 217 of 666
215 Controls in detail
Air conditioning
3
Air cond itioning
N83.00-2126-31
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216 Controls in detailAir conditioning
3
Your vehicle is equipped with either\4
an air-conditioning system and pos-
sibly additional air conditioning in
the rear*
or
\4
a heater* and possibly additional
rear heating* The air-conditioning system is only oper-
ational while the engine is running. You
can use the air-conditioning system to
regulate or control the temperature au-
tomatically. The vehicle is either heated
or cooled, depending on the tempera-
ture selected and the outside tempera-
ture.
The combination filter removes most
dust particles, pollen and unpleasant
odors from the outside air.
Function
Page
1
Side window defroster
vents
224
2
Thumbwheel for air vents
3
Side air vents
4
Thumbwheel for side air
vents and defroster vents
224
5
Swiveling center air vents
6
Thumbwheel for center
air vents
7
Control panel\4
Tempmatic
\4
Rear heating/rear
cooling*
218
225
8
Switch\4
Rear window heating*
\4
Windshield heating*
214
213
9
Auxiliary heating switch*
Heater booster switch*
238
234
Function
Page
Air-conditioning system
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217 Controls in detail
Air conditioning
3
The interval for replacing the filter de-
pends on environmental factors, e.g.
high air pollution. The interval may be
shorter than that indicated in the Ser-
vice Booklet.
iCondensation may collect under the
vehicle while Tempmatic is in opera-
tion.
Warning
G
Air flowing out of the air vents in the foot-
well when Tempmatic is in operation may
be very hot or very cold. There is therefore
a risk of frostbite or burns to bare skin in
the immediate proximity of these outlets.
Keep bare skin away from these air out-
lets. If necessary, direct the airflow into a
different area of the vehicle interior using
the air distribution control.
iIf the vehicle interior has been heat-
ed up, ventilate the vehicle before
starting your journey or briefly
switch to air-recirculation mode for
faster cooling.
Keep the air inlet on the hood free
from ice and snow.
Position the sliders for the center air
vents in the central position to pro-
vide practically draft-free ventilation.
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Page 220 of 666
218 Controls in detailAir conditioning
3
Control panel
for the air-conditioning
system
The air in the vehicle is neither cooled
nor dehumidified when the air condition-
ing system is switched off.\1To switch on:
press the
°
switch
for economy mode.
The indicator lamp in the switch
comes on. N83.25-2048-31
Function
Page
1
Temperature selector
control
220
2
Airflow control with
indicator
220
3
Switch for air-recircula-
tion mode
221
4
Switch for reheat function
(dehumidification)
223
5
Air distribution control
221
6
Switch for \4
Economy mode
\4
Residual heat mode
218
222
Switching the air conditioning sys-
tem on or offiOnly use this setting for a brief peri-
od. The windows could otherwise fog
up.
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219 Controls in detail
Air conditioning
3
\1To switch off:
press the
°
switch for normal mode.
The indicator lamp in the switch goes
out.
Air distribution control
Heating
\1
Set temperature selector control
1
(
\2
page 218) as required, but do not
turn the control below the middle po-
sition.
\1
Set airflow control
2
(\2
page 218)
as required, but do not turn the con-
trol below the second speed.
\1
Set the air distribution control as
shown.
\1
Close the center air vents.
\1
Close the air vents.
\1
Open the side air vents half-way and
direct them at the side windows.
Ventilation/cooling This setting rapidly ventilates/cools the
vehicle interior.\1
Turn temperature selector control 1
(\2
page 218) to the lowest set-
ting (maximum cooling).
\1
Set airflow control
2
(\2
page 218)
as required, but do not turn the con-
trol below the second speed.
\1
Set air distribution control
5
(
\2
page 218) to
h
.
Basic setting
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220 Controls in detailAir conditioning
3
\1
Open as required:
\4
the center air vents
\4
the side air vents
\4
the ventilation vents
\1
Switch air-conditioning system on
(\2
page 218) if necessary.
The temperature is set using temperatu-
re selector control
1
in the control pa-
nel (
\2
page 218).
The recommended setting for the target
temperature is 72°F (22°C) under nor-
mal conditions, to which the air-condi-
tioning system adjusts as rapidly and as
comfortably as possible.Only change the temperature in small in-
crements.
\1To increase:
turn the temperature
selector control clockwise.
\1To reduce:
turn the temperature se-
lector control slightly counterclock-
wise.
1Airflow control\1To increase:
press the
Q
airflow
control.
\1To reduce:
press the airflow
control.
Setting the temperature
iIf you use the basic settings for heat-
ing or ventilating the vehicle, you will
only rarely need to adjust the tem-
perature, airflow and air distribution
(\2
page 219).
Setting the airflow
N83.00-2125-31
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Page 223 of 666

221 Controls in detail
Air conditioning
3
The display next to the airflow con-
trols indicates the speed of the air-
flow.The air distribution is set using the air
distribution control in the control panel
(
\2
page 218).
The symbols on the air distribution
control have the following meanings:
You can switch off the flow of outside air
if unpleasant odors are entering the ve-
hicle from outside, e.g. before driving
through a tunnel. No more outside air is
taken in and the air inside the vehicle is
recirculated.
iThe blower switches off if you press
the
ß airflow control again after the
slowest speed has been reached.
Setting air distributionMark
Meaning
h
\4
Air from the air vents
Ô
P
\4
Air to the windshield
\4
Air from the air vents
Ò
\4
Air to the windshield
\4
Air from the air vents
\4
Air to the footwell
Ó
\4
Air from the air vents
\4
Air to the footwell
Air-recirculation modeWarning
G
Only switch over to air-recirculation mode
briefly if outside temperatures are low.
The windows could otherwise fog up. As a
result, you could be distracted from road
and traffic conditions and cause an acci-
dent.
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222 Controls in detailAir conditioning
3
The switch for air-recirculation mode is
in the control panel (
\2
page 218).
\1To switch on:
press the
Ä
switch.
The indicator lamp in the switch
comes on.
\1To switch off:
press the
Ä
switch again.
The indicator lamp in the switch goes
out.The engine stores residual heat after
long periods of driving. You can use the
residual heat of the engine to heat the
stationary vehicle for a further 30 min-
utes.
\1To switch on:
turn key to position
0
in the ignition lock (
\2
page 111) or
remove it.
\1
Set as required:\4
temperature
(\2
page 220)
\4
air distribution (
\2
page 221)
\4
the air vents (
\2
page 215)
\1
Press the
°
switch
(
\2
page 218).
The indicator lamp in the switch
comes on.
\1To switch off:
press
°
switch
again (
\2
page 218).
The indicator lamp in the switch goes
out.
iAir-recirculation mode is automati-
cally switched off after about 10 to
30 minutes, depending on the out-
side temperature.
Residual heat mode iThe heating period depends on:\4
the coolant temperature
\4
the interior temperature selected
\4
the on-board voltage
The blower runs at speed
1 regard-
less of the position of the airflow
control.
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