display MERCEDES-BENZ CLS COUPE 2008 Repair Manual

Air conditioning
157Function Recommendation/Notes
b ™ Operates the rear-compartment air conditioning via
4-zone Thermotronic (Y page 160)
c Q Increases the airflow (Y page 163)
d ´ Activates/deactivates 4-zone Thermotronic i
Activate
4-zone Thermotronic. The display comes on. (Y page 158)
e · Reduces the airflow (Y page 163)
f T Activates/deactivates the auxiliary heating/venti-
lation i
You
can use the residual heat to heat or ventilate the
vehicle interior after you have switched off the ignition. (Y page 165)
g % Reduces the temperature, left-hand side i
Set the temperature to
22 †. (Y page 159)
h , Activates/deactivates air-recirculation mode i
Only
use this operating mode for a short time, e.g. in
a tunnel. Otherwise, the windows can mist up due to
lack of fresh air. (Y page 164)
j U
Controls the air-conditioning system automatically,
left i
Activate the automatic air conditioning. The indicator
lamp in the U button comes on. (Y page 159) Controls
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Air conditioning
158
Rear-compartment air conditioning*
1
$ To increase the temperature, left
2 Display
3 $ To increase the temperature, right
4 % To reduce the temperature, right
5 % To reduce the temperature, left Activating/deactivating the control
panel
i When the air conditioning is switched off,
the air supply and air circulation are also
switched off. Only select this setting briefly,
otherwise the windows may mist up.
X To activate: press the ´ button.
The display comes on. The previously selec-
ted settings come into effect again.
X To deactivate: press the ´ button.
The display shows 020
/OFF 21
.
i You can also press another button (apart
from the ¯ and T buttons) to acti-
vate Thermatic. Switching cooling with air-dehumidi-
fication on/off
The "cooling with dehumidification" function
is only available when the engine is running.
The air inside the vehicle is cooled and dehu-
midified according to the temperature selec-
ted. This prevents the windows from misting
up. G
Risk of accident
If the "cooling with air-dehumidification"
function is deactivated, the air inside the
vehicle will not be cooled (during warm
weather) or dehumidified. The windows
could mist up more quickly. This may pre-
vent you from observing the traffic condi-
tions, thereby causing an accident. H
Environmental note
The cooling system uses the refrigerant
R134A. This refrigerant does not damage
the earth's ozone layer.
i Condensation may drip from the under-
side of the vehicle when Thermatic is in
cooling mode.
20 Vehicles with 2-zone Thermatic.
21 Vehicles with 4-zone Thermotronic*. Controls
* optional
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Air conditioning
159
X
To switch on: press the œ button.
The indicator lamp in the œ button
comes on.
X To deactivate: press the œ button.
The indicator lamp in the œ button goes
out. The cooling with air dehumidification
function has a delayed switch-off feature.
i The cooling with air dehumidification
function in the rear compartment is only
operative if the 4-zone Thermotronic cool-
ing with air dehumidification function* is
switched on. Controlling the air conditioning auto-
matically
In automatic mode, the set temperature is
maintained at a constant level fully automat-
ically. To do so, the system automatically
regulates the temperature of the dispensed
air, the airflow and the air distribution.
The automatic air conditioning will achieve
optimal operation if "cooling with air dehu-
midification" is also activated. If necessary,
cooling

with air dehumidification can be deac-
tivated. X
Make sure that the key is in position 2 in
the ignition lock.
X Set the desired temperature.
X To activate: press the U button.
The AUTO

display for the air distribution and
airflow comes on. The indicator lamp 22
on
the U button lights up. Airflow and air
distribution are set to automatic mode.
X To deactivate: press the Q or ·
button.
The AUTO display for the airflow goes out.
The automatic control is deactivated and
the airflow is controlled according to the
selected

setting. Automatic air distribution
remains activated.
or
X 2-zone Thermatic only: press
the © or
ª air distribution button.
The AUTO display for the air distribution
goes out. The automatic control is deacti-
vated and the air distribution is controlled
according to the selected setting. Auto-
matic airflow remains activated. or
X
4-zone Thermotronic only*: turn air dis-
tribution thumbwheel 1 or 7 to the
desired symbol

(Y page 155).
The indicator lamp in the U button goes
out. The automatic control is deactivated
and the air distribution is controlled
according to the selected setting. Auto-
matic airflow remains activated. Setting the temperature
2-zone Thermatic Different temperatures can be set for the
driver's and front-passenger sides.
X
To increase/reduce: turn thumbwheels
1 and 7 clockwise or anti-clockwise
(Y

page 153). Only change the temperature
setting in small increments. Start at 22 †.
4-zone Thermotronic* The interior temperature for each of the four
air-conditioning zones can be adjusted sepa-
rately.
22 Only for vehicles with 4-zone Thermotronic*. Controls
* optional
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Air conditioning
160The air-conditioning zones of 4-zone
Thermotronic*
Front air-conditioning zones
X
To increase/reduce: press the $ or
% button. Only change the temperature
setting in small increments. Start at 22 †.
The set temperature is shown in the 4-zone
Thermotronic* display. Rear air-conditioning zones
X
Press the ™ button.
The 4-zone Thermotronic* display switches
to the rear-compartment air conditioning
settings.
X To increase/reduce: press the $ or
% button. Only change the temperature
setting in small increments. Start at 22 †.
The set temperature is shown in the 4-zone
Thermotronic* display. The 4-zone
Thermotronic* display changes back to the
standard display about five seconds after a
button is pressed.
i You can also return to the standard dis-
play by pressing the ™ button again.
Rear-compartment air conditioning*
Different temperatures can be set for the left
and right sides of the rear compartment.
X To increase/reduce: press the $ or
% button. Only change the temperature
setting in small increments. Start at 22 †.
Adjusting the air vents
G Risk of injury
Very hot or very cold air can flow from the
air vents. This could cause burns or frost-
bite to bare skin in the immediate vicinity
of the vents. Keep bare skin away from
these air outlets. If necessary, direct the
airflow away to a different area of the vehi-
cle interior.
Please observe the following notes to ensure
that the air can flow freely through the air
vents:
R Keep the air inlet between the windscreen
and the bonnet free of deposits, such as ice
and snow, to guarantee the supply of fresh
air into the vehicle interior.
R Never cover the vents or air inlet and outlet
grilles in the vehicle interior.
i Position the sliders for the centre air
vents in the central position to provide vir-
tually draught-free ventilation.
Controls
* optional
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Air conditioning
162
Setting the rear-compartment air vents
Rear-compartment air conditioning
1
Rear-compartment air vent, left
2 Rear-compartment air vent, right
3 Thumbwheel for rear-compartment air
vent, right
4 Control panel for rear-compartment air
conditioning* 23
5 Thumbwheel for rear-compartment air
vent, left
X To open/close: turn thumbwheels 3 and
5 up or down. Setting the air distribution
2-zone Thermatic The symbols for the air distribution have the
following meanings:
Symbol Meaning
b
Directs the airflow to the entire
vehicle interior
c
Directs the airflow through the
demister vents to the wind-
screen and side windows and
through the centre and side air
vents
Z
Directs the airflow through the
demister vents to the wind-
screen and side windows
X
Directs the airflow through the
demister vents to the wind-
screen and side windows and to
the front and rear footwells
a
Directs the airflow through the
centre and side air vents Symbol Meaning
Y
Directs the airflow to the front
and rear footwells
Ú Directs the airflow to the centre
and side air vents and to the
front and rear footwells
X
Press the © or ª button repeatedly
until the 2-zone Thermatic display shows
the desired symbol.
4-zone Thermotronic* The air distribution can be adjusted individu-
ally for the driver's and front-passenger sides.
23 Rear-compartment air conditioning* available only in conjunction with 4-zone Thermotronic*. Controls
* optional
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Air conditioning
164 Windows misted up
Windows misted up on the inside X
Activate the "cooling function with air-
dehumidification" function.
X Activate the automatic mode.
X If the windows continue to mist up, activate
the "demisting" function.
Windows misted up on the outside X
Activate the windscreen wipers.
X 2-zone Thermatic: press and hold the
© or ª button until the a, Ú
or Y symbol is shown in the display.
X 4-zone Thermotronic*: turn the thumb-
wheel for air distribution to the Y or
a symbol.
i You should only select this setting until
the windscreen is clear again. Switching the rear window heating
on/off
G
Risk of accident
Clear all windows of ice or snow before set-
ting off. Impaired visibility could otherwise
endanger yourself and others.
i At very low temperatures, the rear win-
dow heating is only switched on once the
vehicle interior has warmed up.
i The rear window heating has a high cur-
rent draw. You should therefore switch it
off
as soon as the window is clear, as it only
switches itself off automatically after
between six and twenty minutes.
i If the battery voltage is too low, the rear
window heating may switch off.
X Make sure that the key is in position 2 in
the ignition lock.
X Press the ¯ button.
The
indicator lamp in the ¯ switch lights
up or goes out. Activating/deactivating air-recircula-
tion mode
You can deactivate the flow of fresh air if
unpleasant odours are entering the vehicle
from outside. The air already inside the vehi-
cle will then be recirculated. G
Risk of accident
Only switch over to air-recirculation mode
briefly
at low outside temperatures. Other-
wise, the windows could mist up, thus
impairing visibility and endangering your-
self and others. This may prevent you from
observing the traffic conditions, thereby
causing an accident.
X To activate: press the , button.
The indicator lamp in the , button
comes on.
i Air-recirculation mode is activated auto-
matically at high outside temperatures.
When air-recirculation mode is activated
automatically, the indicator lamp in
the , button is not lit.
Outside air is added after about 30
minutes. Controls
* optional
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Air conditioning
165
X
To deactivate: press the , button.
The indicator lamp in the , button goes
out.
i Air-recirculation mode switches off auto-
matically:
R after approximately five minutes at out-
side temperatures below approximately
5 †
R after

approximately five minutes if the air
dehumidification is deactivated
R after approximately 30 minutes at out-
side temperatures above approximately
5 †
Air-recirculation mode with the conve-
nience opening/closing feature G
Risk of injury
Make sure that nobody can become trap-
ped
between the side window and the door
frame as the side windows are opened and
closed. Do not place objects or lean against
the side window when it is being opened or
closed. You or the objects could be drawn
in or become trapped between the side
window and the door frame as the window moves. If there is a risk of entrapment,
press the , button again. If necessary,
press

the switch that stops, opens or closes
the side window in the opposite direction.
Make sure that nobody can become trap-
ped when you are opening or closing the
sliding/tilting sunroof*. If there is a risk of
entrapment, press the , button again.
If necessary, press the switch to stop, open
or close the sliding/tilting sunroof* in the
opposite direction.
X Convenience closing: press and hold
the ,

button until the side windows and
the sliding/tilting sunroof* have closed.
The indicator lamp in the , button
comes on. Air-recirculation mode is activa-
ted.
X Convenience opening: press and hold
the ,

button until the side windows and
the sliding/tilting sunroof* have reached
their original position.
The indicator lamp in the , button goes
out. Air-recirculation mode is deactivated.
i If you open the side windows or the slid-
ing/tilting sunroof* manually after closing
using the convenience closing feature, it will remain in this position when opened
using the convenience opening feature. Switching the residual heat/auxiliary
ventilation on/off
It

is possible to make use of the residual heat
of the engine to continue heating the station-
ary vehicle for up to 30 minutes after the
engine has been switched off. The heating
time depends on the set interior temperature.
i The blower will run at a low speed regard-
less of the airflow setting.
i If you activate the "residual heat" function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
X Make sure that the key is in position 0 in
the ignition lock or that it has been
removed.
X To switch on: press the T button.
REST appears in the display.
X To deactivate: press the T button.
REST is no longer shown in the display. Controls
* optional
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Air conditioning
167
Activating the auxiliary heating/ventila-
tion
If the key is in position 1 or 2:
X
Press and hold button 1 for at least two
seconds.
The red or blue indicator lamp in the button
lights up.
If the key is removed or in position 0:
X Briefly press button 1.
The red or blue indicator lamp in the button
lights up.
Deactivating the auxiliary heating/venti-
lation
X Briefly press button 1.
The red or blue indicator lamp in the button
goes out.
Remote control
Your vehicle comes with one remote control.
You may use two additional remote controls
for your vehicle. For further information, con-
sult a qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre. The remote control has a maximum range of
approximately 300 metres. This range may be
reduced by:
R
sources of radio interference
R solid objects between the remote control
and the vehicle
R the remote control being in an unfavoura-
ble position in relation to the vehicle
R transmitting from an enclosed space
i The optimum range can be achieved if you
hold the remote control vertically, pointing
upwards when you press one of the but-
tons.
i A battery symbol appears in the display
when the batteries in the remote control
are low. Replace the remote control bat-
teries (Y page 270).
i More information about the auxiliary
heating can be found in the "Practical
advice" section ( Y page 264).1
Display
2 To check the status
3 OFF to deactivate auxiliary heating/ven-
tilation
4 ON to activate auxiliary heating/ventila-
tion
5 To check the status
Using the remote control, you can:
R activate or deactivate the auxiliary heat-
ing/ventilation
R check the status of the auxiliary heating/
ventilation
Activating the auxiliary heating/ventila-
tion
X Press the ON button.
Controls
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Air conditioning
168
The following messages can appear in the
display: Display Meaning
The auxiliary heating/
ventilation is activated.
A malfunction has occur-
red in the auxiliary heat-
ing/ventilation. The
heating or ventilation
function selected by the
system is not available.
The battery is not
charged sufficiently or
the system is faulty.
The signal transmission
between the transmitter
and the vehicle is faulty.
The heating system has a
fault or there is insuffi-
cient fuel in the fuel tank.
The auxiliary heating is
not working. The auxili-
ary ventilation is still
functioning. Deactivating the auxiliary heating/venti-
lation
The auxiliary heating switches off automati-
cally after 50 minutes.
i
This time limit can be altered. To do this,
visit a qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre.
X Press the OFF button.
The following messages can appear in the
display: Display Meaning
The auxiliary heating/
ventilation is deactiva-
ted.
The signal transmission
between the transmitter
and the vehicle is faulty.
Checking the status of the auxiliary heat-
ing
X
Press the p or o button. The following messages can appear in the
display: Display Meaning
The auxiliary heating/
ventilation is deactiva-
ted.
A malfunction has occur-
red in the auxiliary heat-
ing/ventilation. The
heating or ventilation
function selected by the
system is not available.
The battery is not
charged sufficiently or
the system is faulty.
The signal transmission
between the transmitter
and the vehicle is faulty.Controls
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Sliding sunroof
169The auxiliary ventilation
is switched on. The num-
ber in the remote control
display indicates the
remaining operating time
of the auxiliary ventila-
tion.
The auxiliary heating is
switched on. The number
in the remote control dis-
play indicates the
remaining operating time
of the auxiliary heating. Sliding sunroof
Sliding/tilting sunroof*
G
Risk of injury
Never leave children unsupervised in the
vehicle. They could operate the sliding/tilt-
ing sunroof and injure themselves. Always
take the key with you when leaving the
vehicle, even if you only leave it for a short
time. G
Risk of injury
Make sure that nobody can become trap-
ped when you are opening and closing the
sliding/tilting sunroof. If danger threatens,
release the switch and push it briefly in any
direction to stop the sliding/tilting sunroof. G
Risk of injury
The glass in the sliding/tilting sunroof
could break in an accident. If you are not
wearing a seat belt, there is a risk that you
could be thrown through the opening in the
event of the vehicle overturning. Therefore,
always wear a seat belt to reduce the risk
of injuries. !
Only open the sliding/tilting sunroof if it
is free of snow and ice. Otherwise, mal-
functions may occur.
Do not allow anything to protrude from the
sliding/tilting sunroof. The seals could oth-
erwise be damaged.
i Resonance noises can occur in addition
to the usual airflow noises when the slid-
ing/tilting sunroof is open. They are caused
by minor pressure fluctuations in the vehi-
cle interior.
Change the position of the sliding/tilting
sunroof or open a side window slightly to
reduce or eliminate these noises.
i It is also possible to open and close the
sliding/tilting sunroof from the outside
using the "Summer opening" ( Y page 100)
and "Convenience closing" ( Y page 100)
features respectively. Controls
* optional
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