2005 MERCEDES-BENZ SLK350 climate control

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.

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)

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.

179 Controls in detail
Climate control
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press air condition on/off switch°
again (
page 175).
The indicator lamp on the air condition
on/off switch° goes out.Maximum cooling

Turn thumbwheels4 and7 upwards
to the first stop (
page 173).
The fixed center air vents3 and8
and the adjustable air vents5 and6
are open.

For draft-free ventilation, move the
sliders for the center air vents5
and6 to the middle position
(page 173).

Turn thumbwheels1 anda for the
adjustable side air2 and9 vents to
the fully open position (
page 172).

Set air distribution control3 to
positiona (
page 176).
The air distribution directs the air
through the center and side air vents.

Set air volume control2 to position5
(page 176).
The ventilation operates with maximum
blower speed.

Turn temperature controls1 and4
completely counterclockwise to their
end stops (
page 175).
The lowest temperature for both sides
is set.
!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 refriger-
ant.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.


180 Controls in detailClimate control
Residual engine heat utilization
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes, depending on the
temperature setting of the climate control.
Air volume and distribution are controlled
automatically. This feature makes use of
the residual heat produced by the engine.Activating

Turn the SmartKey in the starter switch
to position1or0, or remove it from
the starter switch.

Press air condition on/off switch°
(page 175).
The indicator lamp on the air condition
on/off switch° comes on.
Set the left and right temperature to
your personal requirements.
iWhen the vehicle’s interior has cooled
down enough, reduce the air volume
and increase the air temperature to
comfortable settings if desired.


181 Controls in detail
Climate control
Deactivating
Press air condition on/off switch°
again (
page 175).
The indicator lamp on the air condition
on/off switch° goes out.
The residual heat switches off
automatically


when you switch on ignition
(page 35)


after about 30 minutes


if the battery voltage drops
Defrosting
Windows fogged up on the inside
Press defrosting switchP
(page 175).
The indicator lamp on defrosting
switchP comes on.
The temperature rises and the ventila-
tion operates with maximum blower
speed.

Press defrosting switchP again.
The indicator lamp on defrosting
switchP goes out.
The previous climate control settings
will be activated again.Windshield fogged up on the outside

Switch on the windshield wipers
(page 53).

Turn air distribution control3 to
positionaorY (
page 176).

182 Controls in detailAutomatic climate control*

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.