MERCEDES-BENZ SLK55AMG 2005 R171 Owner's Manual

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.

184 Controls in detailAutomatic climate control*
iWhen you turn the thumbwheels4
and9 upwards to the first stop, the
fixed center air vents3 anda and
the adjustable center air vents5
and8 are open.
When you turn the thumbwheels com-
pletely upwards, only the adjustable
center air vents5 and8 are open.
For draft-free ventilation, move the slid-
ers for the center air vents5 and8
to the middle position.
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.
When the retractable hardtop is closed,
do not obstruct air flow by placing ob-
jects on the air flow-through exhaust
slots below the rear window.
Keep the air intake grille in front of the
windshield free of snow and debris.

185 Controls in detail
Automatic climate control*
Automatic mode (basic setting)
Press automatic mode switchU.
The indicator lamp on the automatic
mode switchU comes on.
The temperature, air volume and air
distribution will be adjusted automati-
cally.

Press automatic mode switchU
again.
The indicator lamp on the automatic
mode switchU goes out.
The temperature, air volume, and air
distribution are no longer adjusted au-
tomatically.
Setting the temperature
Use the temperature control switches
‚andƒto separately adjust the air
temperature on each side of the passenger
compartment. You should raise or lower
the temperature setting in small incre-
ments, preferably starting at 72°F (22°C).
Increasing
Press red temperature control
switch‚4or6.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
The selected temperature will be indi-
cated in displaye.
Item
1
Air volume control, manual
2
UAutomatic mode
3
PDefrosting
4
‚To increase temperature on
the left side
5
´Automatic climate control
on/off
6
‚To increase temperature on
the right side
7
FRear window defroster
8
Air distribution control, manual
9
TResidual heat/ventilation
a
±Air condition on/off
b
ƒTo lower temperature on the
right side
c
ƒTo lower temperature on the
left side
d
,Air recirculation
e
Display
!With the climate control system
switched off, the air flow and the air
circulation are deactivated.
Only choose this setting temporarily to
prevent the windows from fogging up.
iWhen operating the automatic climate
control system in automatic
modeU, you will only rarely need to
adjust the temperature, air volume and
air distribution.

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.

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.

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.

189 Controls in detail
Automatic climate control*
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, depending on the
temperature setting of the climate control.
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 residual heat/ventilation
switchT (
page 185).
The indicator lamp on the residual
heat/ventilation switchT comes
on.Deactivating

Press residual heat/ventilation
switchT again (
page 185).
The indicator lamp on the residual
heat/ventilation switchT 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 185).
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 previous automatic climate control
settings will be activated again.
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
setting1 regardless of the air distribu-
tion control setting.

190 Controls in detailAutomatic climate control*Windshield fogged up on the outside
Press automatic mode switchU.
The indicator lamp on the automatic
mode switchU comes on.

Close cockpit air vent4
(page 182).

Switch on the windshield wipers
(page 53).Switching off the automatic climate
control system
Switching off
Press automatic climate control on/off
switch´.
The indicator lamp on the automatic
climate control on/off switch´
comes on.
The indicator lamp on the automatic
mode switchU goes out.
Displaye goes out.Switching on

Press automatic mode switchU.
The indicator lamp on the automatic
mode switchU comes on.
Displaye comes on.
iWith automatic mode selected, the
automatic climate control system
prevents windows from fogging up.
iThis setting is only recommended when
the retractable hardtop is open.
!With the climate control system
switched off, the air flow and the air cir-
culation are deactivated.
Only choose this setting temporarily to
prevent the windows from fogging up.