2010 MERCEDES-BENZ CLS COUPE key

Rear-compartmen
toverhead control panel
: p Switches the right-hand reading
lamp on/off
; p Switches the left-hand reading lamp
on/off Interior lighting control
Important notes In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time
except for when the key is in position
2in the
ignitio nlock.
Automatic interior lighting control X
To switch on/off: press the|button.
When the automatic interior lighting con-
trol is activated, the button is flush with the
overhead control panel.
The interior lighting automatically switches
on if you:
R unlock the vehicle
R open a door
R remove the key from the ignition lock
The interior light is activated for a short while
when the key is removed from the ignition
lock. You can activate this delayed switch-off
using the on-board computer (Y page 209).Manual interior lighting control X
To switch the front interior lighting on/
off: press the cbutton.
X To switch the rear interior lighting on/
off: press the ubutton.
X To switch the reading lamps on/off:
press the pbutton. Crash-responsive emergency lighting
The interior lighting is activated automatically
if the vehicle is involved in an accident.
X To switch off the crash-responsive
emergency lighting: press the hazard
warning lamp button.
or
X Lock and then unlock the vehicle using the
key. Changing bulbs
Important safety notes
Xenon bulbs G
Risk of injury
Xenon bulbs carry a high voltage. You could
get an electric shock and be seriously or even
fatally injured if you touch the electric con-
tacts on xenon bulbs. Therefore, never
remove the cover from xenon bulbs.
Do not change xenon bulbs yourself, but have
them replaced at a qualified specialist work-
shop which has the necessary specialist
knowledge and tools to carry out the work
required.
Mercedes-Benz recommends that you use a
Mercedes-Benz Service Centre for this pur-
pose. In particular, work relevant to safety or
on safety-related systems must be carried out
at a qualified specialist workshop.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure 104
Changing bulbsLights and windscreen wipers

X
Turn the key to position 1or 2in the ignition
lock.
X Turn the combination switch to the corre-
sponding position.
! Intermittent wiping with rain sensor: due
to optical influences and the windscreen
becoming dirty in dry weather conditions,
the windscreen wipers may be activated
inadvertently. This could damage the wind-
screen wiper blades or scratch the wind-
screen.
For this reason, you should always switch
off the windscreen wipers in dry weather.
In the ÄorÅ position, the appropriate
wiping frequency is set automatically accord-
ing to the intensity of the rain. In the Å
position, the rain sensor is more sensitive
than in the Äposition, causing the wind-
screen wiper to wipe more frequently. Replacing the wiper blades
Important safety notes G
Risk of accident
The wiper arms could start moving and cause
an injury if you leave the windscreen wipers
switched on.
Remove the key from the ignition lock before
replacing the wiper blades.
! To avoid damaging the windscreen wiper
blades, make sure that you touch only the
wiper arm of the windscreen wiper.
Replacing the wiper blades Removing the wiper blades
X
Remove the key from the ignition lock or
turn the key to position 0(KEYLESS-GO).
X Fold the wiper arm away from the wind-
screen until it engages.
X Set the wiper blade at right angles to the
wiper arm. X
Remove the wiper blade from the retainer
on the wiper arm in the direction of the
arrow.
Fitting the wiper blades
X Slide the new wiper blade into the retainer
on the wiper arm in the opposite direction
to the arrow.
Make sure that the wiper blade slides fully
into the retainer on the wiper arm.
X Turn the wiper blade parallel to the wiper
arm.
X Fold the wiper arm back onto the wind-
screen. Problems with the windscreen wipers
The windscreen wipers are obstructed Leaves or snow, for example, may be
obstructing the windscreen wiper movement.
The wiper motor has been deactivated.
X
For safety reasons, you should remove the
key from the ignition lock.
X Remove the cause of the obstruction.
X Switch the windscreen wipers back on.
The windscreen wipers are inoperative The windscreen wiper drive is malfunctioning.
X
Select another wiper speed on the combi-
nation switch.
X Have the windscreen wipers checked at a
qualified specialist workshop. Windscreen wipers
107Lights and windscreen wipers Z

Activating/deactivating
X
Turn the key to position 2in the ignition
lock.
X To activate: press theÃbutton.
The indicator lamp in the Ãbuttonlights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the ^button.
The indicator lamp in the ^button goes
out. The previously selected settings come
into effect again.
X To deactivate: press the^button.
The indicator lamp in the ^button lights
up. Switching cooling with air dehumidi-
fication on/off
Important information The cooling with air 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.
G
Risk of accident
If the "cooling with air dehumidification" func-
tion 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 prevent you from
observing the traffic conditions, thereby caus-
ing an accident.
Condensatio nmay drip from the underside of
the vehicle when THERMOTRONIC is in cool-
ing mode. This is normal and no tasign that
there is a malfunction.
i The cooling with air dehumidification
function uses refrigerant R134a. This cool-
ant does not contain chlorofluorocarbons,
and therefore does not damage the ozone
layer. Activating/deactivating X
To switch on: press the¿button.
The indicator lamp in the ¿button lights
up.
X To deactivate: press the¿button.
The indicator lamp in the ¿button goes
out. The cooling with air dehumidification
function has a delayed switch-off feature.
Problems with the cooling with air
dehumidification function When you press the
¿button, the indica-
tor lamp in the button flashes three times or
remains off. You can no longer switch on the
cooling with air dehumidification function.
X Consult a qualified specialist workshop. Setting climate control to automatic
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the tem-
perature of the dispensed air, the airflow and
the air distribution.
Automatic mode will achieve optimal opera-
tion if cooling with air dehumidification is also
activated. If desired, cooling with air dehu-
midification can be deactivated. Adjusts the climate control settings
This function is only available with
THERMOTRONIC luxury 3-zone automatic cli-
mate control.
The climate mode setting is especially effec-
tive at high temperatures.
You can select the following climate mode
settings in automatic mode:
FOCUS High airflow; slightly cooler setting
MEDIUM Mediuma irflow; standard setting
DIFFUSE Low airflow; slightly warmer air with less of a draught 114
Operating the climate control systemClimate control

X
Turn the key to position 2in the ignition
lock.
X Press the Ãbutton.
X Press the ñbutton repeatedly until the
desired climate mode appears in the dis-
play. Setting the temperature
THERMATIC 2-zone automatic climate
control Different temperatures can be set for the
driver's and front-passenger sides.
X Turn the key to position 2in the ignition
lock.
X To increase/reduce: turn controls:or
B clockwise or anti-clockwise
(Y page 111).
Only change the temperature setting in
small increments. Start at 22 †.
THERMOTRONIC luxury 3-zone auto-
matic climate control Climate zones of THERMOTRONIC luxury 3-zone
automatic climate control
You can select different temperature settings
for the driver's and front-passenger sides as
well as for the rear compartment.
X Turn the key to position 2in the ignition
lock.
X To increase/reduce the temperature in
the front compartment: turn controls:or
B clockwise or anti-clockwise
(Y page 112).
Only change the temperature setting in
small increments. Start at 22 †.
X To increase/reduce the temperature in
the rear compartment using the front
control panel: press theábutton.
The indicator lamp in the ábutton goes
out.
X Turn control :clockwise or anti-clockwise
(Y page 112).
Only change the temperature setting in
small increments. Start at 22 †.
The temperature setting on the driver's
side is adopted for the rear compartment
and the front-passenger side.
X To increase/reduce the temperature in
the rear compartment using the rear
control panel: press therors
button on the rear control panel.
Only change the temperature setting in
small increments. Start at 22 †.
i If you leave the vehicle parked for longer
than 30 minutes, the temperature setting
for the rear compartment then switches
back to 22 †. Setting the air distribution
P Directs the airflow through the centre
and side air vents
O Directs the airflow through the foot-
well air vents
S Directs the airflow through the centre
and side air vents as well as the foot-
well air vents
¯ Directs the airflow through the demis-
ter vents
b Directs the airflow through the centre
and side air vents as well as the demis-
ter vents Operating the climate control system
115Climate control Z

a
Directs the airflow throug hthe foot-
well and demister vents
_ Directs the airflow through the demis-
ter, centre and side air vents as well as
the footwell air vents
i Regardless of the air distribution setting,
airflow is always directed through the side
air vents. The side air vents can only be
closed when the controls on the side air
vents are turned downwards.
X Turn the key to position 2in the ignition
lock.
X Press the _button repeatedly until the
desired symbol appears in the display. Setting the airflow
X Turn the key to position 2in the ignition
lock.
X To increase: press theKbutton.
X To decrease: press theIbutton.
i You can use THERMOTRONIC luxury 3-
zone automatic climate control to set the
airflow in the rear compartments eparately.Switching the ZONE function on/off
X To activate: press theábutton.
The indicator lamp in the ábutton lights
up.
THERMATIC 2-zone automatic climate con-
trol: the temperature setting for the driver's
side is not adopted for the front-passenger
side.
THERMOTRONIC luxury 3-zone automatic
climate control: the temperature setting on
the driver's side is not adopted for the
front-passenger side or the rear compart-
ment.
When the buttons or controls for tempera-
ture, airflow or air distribution are activated,
the temperature setting on the driver's side is not adopted for the other climate control
zones.
X
To deactivate: press theábutton.
The indicator lamp in the ábutton goes
out.
THERMATIC 2-zone automatic climate con-
trol: the temperature setting for the driver's
side is adopted for the front-passenger
side.
THERMOTRONIC luxury 3-zone automatic
climate control: the temperature setting on
the driver's side is adopted for the front-
passenger side or the rear compartment. Demisting the windscreen
You can use this function to defrost the wind-
screen or to demist the inside of the wind-
screen and the side windows.
i You should only select the demisting
function until the windscreen is clear again.
X Turn the key to position 2in the ignition
lock.
X To switch on: press the¬button.
The indicator lamp in the ¬button lights
up.
The climate control system switches to the
following functions:
R cooling with air dehumidification on
R high airflow 25
R high temperature 25
R air distribution to the windscreen and
fron tside windows
R air-recirculation mode off
X To deactivate: press the¬button.
The indicator lamp in the ¬button goes
out. The previously selected settings come
into effect again. The cooling with air dehu-
midification function remains on. Air-recir-
culation mode remains deactivated.
or
25 Depending on the outside temperature. 116
Operating the climate control systemClimate control

X
Press the Ãbutton.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
or
X Turn controls :orB clockwise or anti-
clockwise (Y page 111), (Y page 112).
or
X Press the KorI button. Demisting the windows
Windows misted up on the inside X
Activate the ¿cooling with air dehu-
midification function.
X Activate automatic mode Ã.
X If the windows continue to mist up, activate
the demisting function (Y page 116).
i You should only select this setting until
the windscreen is clear again.
Windows misted up on the outside X
Activate the windscreen wipers.
X Press the _button repeatedly until the
P orO symbol appears in the dis-
play.
i You should only select this setting until
the windscreen is clear again. Rear window heating
Activating/deactivating G
Risk of accident
Clear all windows of ice or snow before setting
off. Otherwise, impaired visibility could
endanger you and others.
The rear window heating has ahigh current
draw. You should therefore switch it off as
soon as the window is clear, as it only
switches off automatically after several
minutes. If the battery voltage is too low, the rear win-
dow heating may switch off.
X Turn the key to position 2in the ignition
lock.
X Press the ¤button.
The indicator lamp in the ¤button lights
up or goes out.
Problems with the rea rwindow heating The rear window heating has switched off
prematurely or cannot be activated.
X
Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window heating is activated again
automatically. Activating/deactivating air-recircula-
tion mode
You can deactivate the flow of fresh air if
unpleasan todours are entering the vehicle
from outside. The air already inside the vehi-
cle will then be recirculated.
The operation of the air-recirculation mode is
the same for all contro lpanels. G
Ris
kofa ccident
Only switch ove rto air-recirculation mode
briefly at low outside temperatures. Other-
wise, the windows could mist up, thus impair-
ing visibility and endangering yourself and
others. This may prevent you from observing
the traffic conditions, thereby causing an
accident.
X Turn the key to position 2in the ignition
lock.
X To switch on: press thegbutton.
The indicator lamp in the gbutton lights
up. Operating the climate control system
117Climate control Z

X
Turn the key to position 0in the ignition
lock or remove it.
X To switch on: press theÌbutton.
The indicator lamp in the Ìbutton lights
up.
X To deactivate: press theÌbutton.
The indicator lamp in the Ìbutton goes
out.
i Residual heat is deactivated automati-
cally:
R after about 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R if the coolant temperature is too low Auxiliary heating
Important safety notes G
Risk of poisoning
Exhaust fumes are produced when the auxili-
ary heating is in operation. Inhaling these
exhaust fumes can be poisonous. You should
therefore switch off the auxiliary heating in
confined spaces without an extraction sys-
tem, e.g. a garage. G
Risk of fire
When operating the auxiliary heating, parts of
the vehicle may become very hot, and highly
inflammable material such as fuels could be
ignited. Operating the auxiliary heating is thus
prohibited at filling station sorwhen your vehi-
cle is being refuelled. You must therefore
switch off the auxiliary heating at filling sta-
tions.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for a longer
distance.
i Switch on the auxiliary heating regularly,
e.g. for about ten minutes every month. The auxiliary heating heats the air in the vehi-
cle interior to the set temperature without
using the heat of the running engine. The aux-
iliary heating is operated directly using the
vehicle's fuel. For this reason, the tank con-
tent must be at least at reserve fuel level to
ensure that the auxiliary heating functions.
The auxiliary heating/ventilation automati-
cally adjusts to changes in temperature and
weather conditions. For this reason, the aux-
iliary heating could switch from ventilation
mode to heating mode or from heating mode
to ventilation mode.
The auxiliary heating switches off automati-
cally after 50 minutes. This time limit can be
altered. To do this, visit a qualified specialist
workshop, e.g. a Mercedes-Ben
zService
Centre.
You cannot use the auxiliary ventilation to
cool the vehicle interior to a temperature
lower than the outside temperature.
Before switching on X
Turn the key to position 2in the ignition
lock.
X Set the temperature.
The auxiliary heating/ventilation can be acti-
vated even when the climate control is being
controlled manually. Optimum comfort can
be attained when the system is set to auto-
matic mode. Set the temperature to 22 †.
The auxiliary heating/ventilation can be acti-
vated or deactivated using the remote control
or the button on the centre console.
The on-board computer can be used to spec-
ify up to three departure times, one of which
may be preselected (Y page 210). Operating the climate control system
119Climate control Z

the vehicle could skid. Thi
scould cause you
to lose control of your vehicle and cause an
accident.
! Warm up the engine quickly. Do not use
the engine's full performance until it has
reached operating temperature.
Only set the automatic transmission to the
respective drive positions when the vehicle
is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery
roads. Otherwise, you could damage the
drive train.
! AMG vehicles: at low engine oil tempera-
tures (below +20 †), the maximum engine
speed is restricted in order to protect the
engine. To protect the engine and maintain
smooth engine operation, avoid driving at
full throttle when the engine is cold. Key positions
Key g
To remove the key
1 Power supply for some consumers, such
as the windscreen wipers
2 Ignition (power supply for all consumers)
and drive position
3 Starting the engine
i The key can be turned in the ignition lock
even if it is not the correc tkey for the vehi- cle. Then, the ignition is not switched on.
The engine cannot be started.
KEYLESS-GO General notes
Vehicles with KEYLESS-GO are equipped with
a key featuring an integrated KEYLESS-GO
function and a detachable Start/Stop button.
The Start/Stop button must be inserted into
the ignition lock and the key must be in the
vehicle.
Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. This is only
the case if you are not depressing the brake
pedal.
If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi-
ately.
X
Position 0: if Start/Stop button :has not
yet been pressed, this corresponds to the
key being removed from the ignition.
X Position 1: press Start/Stop button :.
You can now activate the windscreen wip-
ers, for example.
i If you then open the driver's door when in
this position, the power supply is deactiva-
ted.
X Position 2(ignition): press Start/Stop but-
ton :twice.
i If you press Start/Stop button :once
when in this position and the driver's door Driving
129Driving and parking Z