2012 MERCEDES-BENZ CLS COUPE air condition

Rear windo
wheating
Switchin gon/off G
WARNING
Clea rall windows of ice or sno wbefor esetting
off .O therwise, impaire dvisibility could
endanger yo uand others.
Th er earw indow heatin ghasah igh current
draw. You should therefore switc hitoff as
soon as the window is clear .Itotherwise
switches off automaticall yafter several
minutes.
If the battery voltag eistoo low, the rea rwin-
dow heatin gmay switc hoff.
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 th erearw indow heating The rear window heatin
ghas switched off
prematurely or cannot be activated.
X Switch off any consumers that are not
required, e.g. readin glamps or interior
lighting.
When the battery is sufficiently charged,
the rear window heatin gisactivate dagain
automatically. Activating/deactivating air-recircula-
tion mode G
WARNING
Only switc hover to air-recirculatio nmode
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. 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.
The operation of air-recirculation mode is the
same for all control panels.
X
Turn the key to position 2in the ignition
lock.
X To activate: press thegbutton.
The indicator lamp in the gbutton lights
up.
i In the event of high pollution levels 1
or at
high outside temperatures, air-recircula-
tion mode is automatically activated. When
air-recirculation mode is activated auto-
matically, the indicator lamp above the
g button does not light up.
Outside air is added after about
30 minutes.
X To deactivate: press thegbutton.
The indicator lamp in the gbutton goes
out.
i Air-recirculation mode deactivates auto-
matically:
R after approximately five minutes at out-
side temperatures below approximately
5†
R after approximately five minutes if cool-
ing with air dehumidification is deactiva-
ted
R after approximately 30 minutes at out-
side temperatures above approximately
5† Convenience opening/closing using
the air-recirculation button
G
WARNING
Make sure that nobody can become trapped
between the side window and the door frame
as the side windows are opened and closed.
Make sure that all object sand body parts are
clear of the side windows when they are being
1 THERMOTRONIC automatic climate contro lonly. Operatin
gthe climate contro lsystem
131Climate control
Z

opened or closed. You or the object
scould be
drawn in or become trapped between the side
window and the door frame as the window
moves. If there is arisk of entrapment, oper-
ate the Wswitchtom ove the side window
in the opposit edirection.
Make sure that nobody can becom etrapped
as the slidin gsunroof/panorama slidin gsun-
roof is opened and closed. If there is arisk of
entrapment, operat ethe 3 switchtom ove
the slidin gsunroof/panorama slidin gsunroof
in the opposit edirection.
X Convenience closing feature: press and
hold the gbutton until the side win-
dows and the sliding sunroof/panorama
sliding sunroof are closed.
The indicator lamp in the gbutton lights
up. Air-recirculation mode is activated.
X Convenience opening feature: press and
hold the gbutton until the side win-
dows and the sliding sunroof/panorama
sliding sunroof are opened. The side win-
dows and the sliding sunroof/panorama
sliding sunroof move back to their original
position.
The indicator lamp in the gbutton goes
out. Air-recirculation mode is deactivated.
i If you open the side windows or the sliding
sunroof/panorama sliding sunroof man-
ually after closing the mwith the conveni-
enc eclosing feature, the ywill remain in this
position when opened using the conveni-
enc eopening feature. Activating/deactivating th
eresidual
heat function
The residual heat function is only available
with THERMOTRONI Cautomatic climate con-
trol.
It is possible to mak euse of the residual heat
of the engine to continue heatin gthe station-
ary vehicle for up to 30 minutes after the
engine has been switched off .The heating time depends on the temperature that has
been set for the vehicle interior.
X
To activate: press theÌbutton.
The indicator lamp in the Ìbutton lights
up.
i The blower will run at alow 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 To deactivate: press theÌbutton.
The indicator lamp in the Ìbutton goes
out.
i It is possible that the residual heat func-
tion may be activated automatically an hour
after the key has been removed. The vehi-
cle is then ventilated for 30minutes to dry
the air-conditioning system.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops Auxiliary heating
Important safety notes G
WARNING
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. agarage. G
WARNING
When operating the auxiliary heating parts of
the vehicle can get very hot. Make sure that
the exhaust system does not under any cir-
cumstances come into contact with easily
ignitable material such as dry grass or fuels.
The material could otherwise ignite and set 132
Operating the climate control systemClimatec
ontrol

the vehicl
ealigh t. Choose your parking spot
accordingly.
Operating the auxiliary heating is thu spro-
hibited at filling stations or when your vehicle
is being refuelled .You must therefor eswitch
off the auxiliary heating at filling stations.
! 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 alonger
distance.
i Switch the auxiliary heating on regularly
once amonthf or about ten minutes.
The auxiliary heating heats the air in the
passenger compartment to the selected tem-
perature. It does not use the heat of the run-
ning engine to do this. The auxiliary heating
is operated directly using the vehicle's fuel.
For this reason, the tank content 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 aqualified specialist
workshop.
You cannot use the auxiliary ventilation to
cool the vehicle interior to atemperature
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 climate control is set to
manual. Optimum comfor tcan be attained
when the system is set to automatic 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 225).
Switching the auxiliary heating/venti-
lation on/off using the centre console
button The colours of the indicator lamps on the but-
ton have the following meanings:
Blue Auxiliary ventilation switched on
Red Auxiliary heating switched on
Yellow Departure time preselected
(Ypage 225) Switch in the centre console
X
To switch the auxiliary heating/ventila-
tion on: press button :.
The red or blue indicator lamp in but-
ton :lights up.
X To switch the auxiliary heating/ventila-
tion off: press button :.
The red or blue indicator lamp in but-
ton :goes out.
Switching the auxiliary heating/venti-
lation on/off using the remotec ontrol Points to observe before use
Your vehicle comes with one remote control.
You may use two additional remote controls
for your vehicle. For more information, please
contact
aqualified specialist workshop. Operating the climate control system
133Climate control Z

R
the se ttemperature for the vehicle interior
has been reached.
R the batter yissufficiently charged.
R the system detects that the windscreen is
not misted up when the air-conditioning
system is switched on.
R the bonnet is closed.
R the driver's door is closed and the driver's
seat belt is fastened.
If conditions for automatic engin eswitch-off
have not been fulfilled, the ¤symbol will
be shown in yellow.
AMG vehicles: the AMG menu in the multi-
function display additionally shows the Stop/Start inactive message.
i If you shift the transmission from Rto D,
the ECO start/stop function is available
again oncet he¤ symbol reappears in
green in the multifunction display.
i All vehicles (except AMG vehicles):
automatic engin eswitch-off can take place
am aximum of four times consecutively (ini-
tial stop and three subsequent stops). The
¤ symbol is shown in yellow in the mul-
tifunction display after the engin ehas been
started automatically for the fourt htime.
The automatic engin eswitch-off is availa-
ble oncea gain when the ¤symbol is
shown in green in the multifunction display.
i AMG vehicles: times which the engine
can be automatically switched off.
i You can also activat ethe HOLD function
when the vehicle is stationary if the engine
has been switched off automatically. It is
then not necessary to continue applying
the brakes during the automatic stop
phase. When you depress the accelerator
pedal, the engin estart sautomatically and
the brakin geffec toft he HOLD function is
deactivated. Depress the accelerator pedal
gently, as the engin emust be started first.
i Durin gautomatic engin eswitch-off ,the
climate control system only operates at a
reduced capacity. If you require full climate control capacity, the ECO start/stop func-
tion can be deactivated by pressing the
ECO button (Y
page 145).
Automatic engine start The engin
eisstarted automatically if:
R you switch off the ECO start/stop function
by pressing the ECO button.
R you release the brakes when in transmis-
sion position Dor N,w hen the HOLD func-
tion is not active.
R you depress the accelerator pedal.
R you engage revers egear R.
R you move the transmission out of position
P.
R you switch to drive program S,S+ orM
(AMG vehicles).
R you unfasten your seat belt or open the
driver's door.
R the vehicle start storoll.
R the brake system requires this.
R the temperature in the vehicle interior devi-
ates from the set range.
R the system detects moisture on the wind-
screen when the air-conditionin gsystem is
switched on.
R the battery's charge status is too low.
i Shifting the transmission to position P
does not start the engine. 146
DrivingDriving and parking

i
This also applies if you have activated
cruise control, SPEEDTRONIC or DIS-
TRONIC PLUS.
This will use the braking effect of the engine,
so less braking will be required to prevent the
vehicle from gaining speed. This relieves the
load on the brake system and prevent sthe
brakes from overheatin gand wearing too
quickly.
Heavy and light loads G
WARNING
The braking system can overheat if you leave
your foot on the brake pedal while driving.
This increases the braking distanc eand could
even cause the braking system to fail. There
is ar isk of an accident.
Never use the brake pedal as afootrest. Do
not simultaneously depress both the brake
pedal and the accelerator pedal while driving.
! Depressin gthe brake pedal constantly
results in excessiv eand premature wear to
the brake pads.
If the brakes have been subjected to aheavy
load, do not stop the vehicle immediately, but
drive on for ashort while. This allows the air-
flow to cool the brakes more quickly.
If the brakes have been used only moderately,
you should occasionally test their effective-
ness. To do this, brake more firmly from a
higher speed. This improves the grip of the
brakes.
Wet road surfaces If you have driven for
along time in heavy rain
without braking, there may be adelayedr eac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has
been washed or driven through deep water.
You have to depress the brake pedal more
firmly. Maintain agreater distanc efrom the
vehicle in front.
After driving on awet road or having the vehi-
cle washed, brake firmly while paying atten- tion to the traffic conditions. This will warm
up the brake discs, thereby drying them more
quickly and protecting them against corro-
sion.
Limited braking performance on salt-
treated roads
If you drive on salted roads,
alayer of salt
residue may form on the brake discs and
brake pads. This can result in asignificantly
longer braking distance.
R Brake occasionally to remove any possible
salt residue. Make sure that you do not
endanger other road users when doing so.
R Carefully depress the brake pedal and the
beginnin gand end of ajourney.
R Maintain agreater distance to the vehicle
ahead.
New brake pads/linings New and replaced brake pads and discs only
reach their optimum braking effect after sev-
eral hundred kilometres of driving. Compen-
sate for this by applying greater force to the
brake pedal.
For safety reasons, Mercedes-Benz recom-
mends that you only have brake pads/linings
fitted to your vehicle which have been
approved for Mercedes-Benz vehicles or
which correspon dtoanequivalent quality
standard. Brake pads/linings which have not
been approved for Mercedes-Benz vehicles or
which are not of an equivalent quality could
affect your vehicle's operating safety.
AMG high-performance and ceramic
brakes The AMG brake systems are designed for
heavy loads. This may lead to noise when
braking. This is dependent on:
R
speed
R braking force
R environmental conditions, such as temper-
ature and humidity Driving tips
163Driving and parking Z

The wear of individual componentsoft
he
brake system, such as the brake pads/linings
or brake discs, depends on the individual driv-
ing style and operating conditions.
For this reason, it is impossible to state a
mileage lifetime that will be valid under all
circumstances. An aggressive driving style
will lead to high wear. You can obtain further
information about this from your Mercedes-
Benz Servic eCentre.
New and replaced brake pads and discs only
reach their optimum braking effect after sev-
eral hundred kilometres of driving. Compen-
sate for this by applying greater force to the
brake pedal. Do not forget this, and adapt
your driving and braking accordingly during
this run-in period.
Excessively heavy braking results in corre-
spondingly high brake wear. Observe the
brake system warning lamp in the instrument
cluster and notea ny brake status messages
in the multifunction display .For high-per-
formanc edriving in particular, it is important
to maintain and have the brake system
checked regularly. Driving on wet roads
Aquaplaning If water has accumulated to
acertain depth
on the road surface, there is adanger of aqua-
planing occurring, even if:
R you are driving at low speeds.
R the tyres have adequate tread depth.
For this reason, do not drive in tyre ruts and
brake carefully.
Driving on flooded roads !
Bear in mind that vehicles travelling in
front or in the opposite direction create
waves. This may cause the maximum per-
missible water depth to be exceeded.
These notes must be observed under all
circumstances. You could otherwise dam- age the engine, the electronics or the trans-
mission.
If you have to drive on stretches of road on
which water has collected, please bear in
mind that:
R the maximum permissible still water depth
is 25 cm.
R you should drive no faster than at walking
pace. Winter driving
Important safety notes G
WARNING
If you shift down on aslippery road surface in
an attempt to increase the engine's braking
effect ,the drive wheels could lose their grip.
This increases the risk of skidding and having
an accident.
Do not shift down for additional engine brak-
ing on aslippery road surface. G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the
vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is arisk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open
aw indow on the side of the vehicle that is not
facing into the wind.
Have your vehicle winterproofed at aqualified
specialist workshop at the onset of winter.
Observe the notes in the "Winter operation"
section (Y page 330).
Driving with summer tyres Observe the notes in the "Winter operation"
section (Y
page 330). 164
Driving tipsDriving and parking

G
WARNING
DISTRONIC PLUS cannot take account of road
and traffic conditions. If DISTRONIC does not
recognise or no longer recognise sthe vehicle
in front, do not activate DISTRONIC or, if it is
already active, deactivate it. This is especially
the case:
R before corners
R on filter lanes
R when changing to alane with faster moving
traffic
R in comple xdriving situations or where lanes
are diverted ,e.g. at roadworks on amotor-
way
DISTRONIC PLUS otherwise maintains the
current spee dset by you or accelerates up to
the set speed.
DISTRONIC PLUS cannot take account of
weather conditions. Deactivate, or do not
activate, DISTRONIC PLUS:
R if the road sare slippery ,snow-covered or
icy. The wheels could lose their grip when
braking or accelerating. The vehicl ecould
start to skid.
R if the sensors are dirty or there is poor vis-
ibility ,e.g. due to snow, rain or fog. Dis-
tance control may be impaired.
Always pay attention to traffic conditions
even when DISTRONIC PLUS is activated.
Otherwise, you may fail to recognise dangers
in time, caus eanaccident and injure yourself
and others. G
WARNING
DISTRONIC PLUS brakes yourv ehicle up to a
maximum of 4m/s2
depending on its speed.
This corresponds to approximately 40% of
your vehicle's maximum braking power. You
must also apply the brakes yourself if this
braking power is not sufficient.
If DISTRONIC PLUS detect sarisk of collision
with avehicle in front, an intermittent warning
tones ounds. In addition, the ·distance
warning lamp in the instrument cluster lights
up. Brak etoavoidacollision. General notes DISTRONIC PLUS regulates the speed and
automatically helps you maintain the dis-
tanc
etot he vehicle detected in front. DIS-
TRONIC PLUS brakes automatically so that
the set speed is not exceeded.
On long and steep downhill gradients, you
must select shift range 1,2or 3in good time.
By doing so, you will make use of the braking
effec tofthe engine. This relieves the load on
the brake system and prevents the brakes
from overheating and wearing too quickly.
If DISTRONIC PLUS detectsas lower-moving
vehicle in front,y our vehicle is braked in order
to maintain the preset distance to the vehicle
in front.
The radar sensor system is switched off auto-
matically in the vicinity of radio telescope
facilities (Y page 368).
If you want DISTRONIC PLUS to assist you,
the radar sensor system must be activated
(Y page 225) and operational.
If there is no vehicle in front,D ISTRONIC
PLUS operates in the same way as cruise
control in the speed range between
30 km/h and 200 km/h. If avehicle is driving
in fron tofyou, DISTRONIC operates in the
speed range between 0km/h and
200 km/h.
Do not use DISTRONIC PLUS on road swith
steep gradients. Driving systems
171Driving and parking Z

Activating RACE START
X
Depress th ebrak epedal wit hyour left foot
and keep it depressed.
X Turn the drive program selector clockwise
(Y page 151) until the RSlamp lights up.
The RACE START Confirm: Paddle UP Cancel: Paddle DOWN message appears
in the multifunction display.
i If the activation conditions are no longer
fulfilled, RACE START is cancelled. The
RACE START cancelled message
appears in the multifunction display.
X To cancel: pull the left steerin gwheel shift
paddle (Y page 152).
or
X To confirm: pull the right steerin gwheel
shift paddle (Y page 152).
The RACE START available Depress accelerator message appears in the mul-
tifunction display.
i If you do not depress the accelerator
pedal fully within two seconds, RACE
START is cancelled. The RACE START not
possible See Owner's Manual message
appears in the multifunction display.
X Fully depress the accelerator pedal.
The engine speed rises to approximately
3500 rpm.
The RACE START Release brake to start message appears in the multifunc-
tion display.
i If you do not release the brake pedal
within five seconds, RACE START is cancel-
led. The RACE START cancelled mes-
sage appears in the multifunction display.
X Take your foot off the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum accel-
eration.
The RACE START active message appears
in the multifunction display.
RACE START is deactivated when the vehicle
reaches aspeed of approximately 50 km/h. Drive program
S+is activated. SPORT han-
dling mode remains activated.
RACE START is deactivated immediately if
you release the accelerator pedal during
RACE START or if any of the activation condi-
tions are no longer fulfilled. The RACE START
not possible See Owner's Manual mes-
sage appears in the multifunction display.
i After using it several times in short suc-
cession, RACE START will be unavailable
until acertain distance has been driven. AIRMATIC
Vehicle level Important safety notes
G
WARNING
If you have selected "Comfort tuning", the
vehicle will be lowered if you lock it within
60 seconds of the engine being switched off.
Make sure, therefore, that nobody is in the
vicinit yofthe wheel housing or under the
vehicle when you lock the vehicle. Otherwise,
limbs could become trapped.
! The vehicle is lowered by about 15 mm if:
R you have selected "Comfort tuning"
R you switch off the engine and
R you lock the vehicle within approximately
60 seconds
When parking, position your vehicle so that
it does not make contact with the kerb as
the vehicle is lowered. Your vehicle could
otherwise be damaged.
Your vehicle regulates its height automati-
cally. All-round level control ensures the best
possible suspension and constant ground
clearance, even with aladen vehicle. When
you drive fast, the vehicle is lowered auto-
matically to improve driving safety and to
reduce fuel consumption. Driving systems
181Driving and parking Z