2006 MERCEDES-BENZ CL500 Owner's Manual

184 Controls in detailAutomatic climate control

185 Controls in detail
Automatic climate control
Automatic climate control panel
Item
1
Left center air vent, adjustable
2
Left air vent, fixed
3
Thumbwheel for air volume control
for left center air vent
4
Thumbwheel for air temperature
control for center air vents
5
Thumbwheel for air volume control
for right center air vent
6
Right air vent, fixed
7
Right center air vent, adjustable
8
Side defroster vent, fixed
9
Side air vent, adjustable
a
Thumbwheel for air volume control
for side air vent
b
Door air vent
c
Automatic climate control panel
iFor draft-free ventilation, move the slid-
ers for the center air vents 1, 7, 9
to the middle position.
Item
1
Front defroster
2
Rear window defroster
3
Display
4
Residual engine heat utilization
5
Automatic climate control on/off
6
Air distribution, right (automatic,
manual)
7
AC cooling on/off
8
Right side temperature control
9
Air volume (automatic, manual)
a
Left side temperature control
b
Air recirculation
c
Air distribution, left (automatic, man-
ual)
d
Activated charcoal filter

186 Controls in detailAutomatic climate controlThe automatic climate control is operation-
al whenever the engine is running. You can
operate the climate control system in ei-
ther the automatic or manual mode. The
system cools or heats the interior depend-
ing on the selected interior temperature
and the current outside temperature.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 ± mode is selected
(
page 193).
Warning!
G
When operating the automatic climate con-
trol, the air that enters the passenger com-
partment through the air vents can be very
hot or very cold (depending on the set tem-
perature). This may cause burns or frostbite
to unprotected skin in the immediate area of
the air vents. Always keep sufficient dis-
tance between unprotected parts of the
body and the air vents. If necessary, use the
air distribution control (
page 185) to di-
rect the air to air vents in the vehicle interior
that are not in the immediate area of unpro-
tected skin.
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.
iThe current climate control settings
(ON/OFF, temperature, air volume, ac-
tivated charcoal filter, etc.) are stored
for each SmartKey before it is removed
from the starter switch or when the ve-
hicle is locked using the SmartKey with
KEYLESS-GO* (
page 122).
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, leaves, sticks,
and any other debris.
Do not obstruct air volume by placing
objects on the air volume-through ex-
haust 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.

187 Controls in detail
Automatic climate control
Deactivating the climate control sys-tem
Deactivating
It is possible to completely deactivate the
automatic climate control system. 
Press button M (
page 185).
The display shows
0.
Reactivating

Press button M (
page 185).
Setting the temperature
Use temperature controls aand8
(page 185) to 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/decreasing

Press button a or 8 repeatedly up or
down until the display shows the de-
sired temperature.
The automatic climate control system
will accordingly adjust the interior air
temperature.
Adjusting the temperature for center
air vents
When outside temperatures are low, you
can manually raise the air temperature for
the center and side air vents. The
thumbwheel4 is located between the
center air vents (
page 184).Automatic temperature control

Turn thumbwheel 4 to A.
The indicator lamp above the thumb-
wheel comes on. The temperature is
automatically adjusted to the set value.
Turning on warm air

Turn thumbwheel4 in the direction of
the white marking.
Warm air will enter from the center air
vent.
Turning on cooler air

Turn thumbwheel4 in the direction of
the blue marking.
Cooler air will enter from the center air
vent.
iWhen the air conditioning is switched
off, the outside air supply and circula-
tion are also switched off. Only choose
this setting for a short time. Otherwise
the windows could fog up.

188 Controls in detailAutomatic climate controlAdjusting air distribution
Use the air distribution controlsc and6
(page 185) to separately adjust the air
distribution on each side of the passenger
compartment. The following symbols are
found on the controls:
Adjusting manually

Press left or right buttonU.
The buttonU will pop out.
The button emerges and theh,
», d and c symbols become
visible.

Turn the marking on the regulator to
the desired symbol.
The air will be directed to the vents cor-
responding to this symbol.
Adjusting automatically

Press left or right buttonU until it
clicks in.
Theh, », d and c sym-
bols are no longer visible.
The air distribution is adjusted auto-
matically.
Windows fogged on the inside

Press button± to switch on the air
conditioning (
page 185).
The indicator lamp in the button goes
out.

Press button, to switch off the air
recirculation (
page 185).
The indicator lamp on the button goes
out.

Make sure left and right buttonU
emerges.
Theh, », d and c sym-
bols become visible.

Press left and right buttond.

Set blower to the maximum speed.

Adjust left and right air vents1
and7 upwards (
page 184).

Increase temperature setting.

Open the side air vents9 and direct
them onto the side windows
(page 184).
Windshield fogged on the outside

Switch the windshield wipers on
(page 54).

Press on both buttons U until they
click in.
Theh, », d and c sym-
bols are no longer visible.
Symbol
Function
h
Directs air through the cen-
ter air vents
d
Directs air to the windows
»
Directs air into the entire
vehicle interior
c
Directs air to the footwells

189 Controls in detail
Automatic climate control
Adjusting air volume
Use air volume control9 (
page 185) for
both automatic and manual air volume ad-
justment.
Adjusting automatically

PressA on air volume switch9
(page 185).
The display shows
AUTO
. The air volume
is adjusted automatically.
Adjusting manually
Reducing air volume

Press switch 9 down until the desired
air volume is reached.
The display shows the current level.
Increasing air volume

Press switch9 up until the desired air
volume is reached.
The display shows the current level.
Maximum cooling MAXCOOL
If the left and right air distribution controls
as well as the air volume control are set
toU and there is a high need for cool-
ing, the display
AUTO MAXCOOL
appears.
This provides the fastest possible cooling
of the vehicle interior (when windows and
tilt/sliding sunroof roof are closed).
Defrosting
Activating
Press buttonP (
page 185).
The indicator lamp on the button
comes on.
Switch off air recirculation, if selected.

Press button, (
page 185).
The indicator lamp on the button goes
out.

Close center air vents.

Adjust side air vents upwards.
Deactivating

Press buttonP (
page 185).
The indicator lamp on the button goes
out. Defrosting is turned off.
iThese settings should only be selected
for a short time.

190 Controls in detailAutomatic climate controlAir 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 button, (
page 185).
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 press and hold button, the
windows and tilt/sliding sunroof will
close. Warning!
G
Never operate the windows and the tilt/slid-
ing sunroof if there is the possibility of any-
one being harmed by the closing procedure.
In the event that the procedure causes po-
tential danger, the closing of the windows
can be immediately halted by releasing
button, or by pressing the respective
window switch. The closing of the tilt/slid-
ing sunroof can be immediately halted by re-
leasing button, or by moving the
tilt/sliding sunroof switch in the overhead
control panel in any direction.
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 beyond a
predetermined level, for example in
a tunnel
Please note that the charcoal filter
must be activated (
page 191) for the
air recirculation mode to be activated
automatically.
If you have turned off the air condition-
ing (
page 193) or the outside
temperature is below 41°F (5°C), the
air recirculation mode will not switch
on automatically.

191 Controls in detail
Automatic climate control
Deactivating
Press button, (
page 185).
The indicator lamp on the button goes
out.The air recirculation mode is deactivated
automatically:


after 5 minutes if the outside tempera-
ture is below approximately 41°F (5°C)


after 5 minutes if the air conditioning is
turned 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 (
page 185).
The indicator lamp on the button
comes on.
iIf you press and hold button, the
windows and or tilt/sliding sunroof will
return to their previous position.
A window or tilt/sliding sunroof will
only return to its previous position if it
has not been moved to another posi-
tion using the respective window
switch or tilt/sliding sunroof switch af-
ter it was closed with button,.
A window or tilt/sliding sunroof that
was moved will remain in its current po-
sition if button, is used t o re-open
the remaining windows or tilt/sliding
sunroof.
iIf you press and hold buttone the
windows and tilt/sliding sunroof will
close.