lock MERCEDES-BENZ CLS COUPE 2012 Repair Manual

!
Never open the bonnet if awindscreen
wiper arm has been folded awayf rom the
windscreen.
Never fold awindscreen wiper arm without
aw iper bladeb ack onto the windscreen.
Hold the windscreen wiper arm firmly when
you change the wiper blade. If you release
the windscreen wiper arm without awiper
bladea nd it falls onto the windscreen, the
windscreen may be damagedbyt he force
of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at aqualified
specialist workshop.
! To avoi ddamaging th ewindscree nwiper
blades, mak esure that you touc honly the
wiper arm of the windscreen wiper.
Replacing th ewiper blades Removing th
ewiper blades
X Remove the key fro mthe ignition lock or
tur nthe key to position 0(KEYLESS-GO).
X Fold the wiper arm away from the wind-
screen until it engages. X
Firmly press release knob :and pull the
wiper blade upwards from the wiper arm in
the direction of the arrow. Fitting the wiper blades
X
Position the new wiper blade in the retainer
on the wiper arm and slide it into place in
the opposite direction to the arrow.
The wiper blade audibly engages.
X Make sure that wiper blade is seated cor-
rectly.
X Fold the wiper arm back onto the wind-
screen. Problems with the windscreen wipers
The windscreen wipers are obstructed X
For safety reasons, you should remove the
key from the ignition lock.
or
X Switch off the engine using the Start/Stop
button and open the driver's door.
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. 122
Windscreen wipersLights and windscreen wipers

Information abou
tusing
THERMOTRONIC automatic climate
control
The following contains instructions and rec-
ommendations to enable you to get the most
out of your THERMOTRONIC automatic cli-
mate control.
R Activate climate control using the Ãand
¿ buttons. The indicato rlamps above
the à and¿ buttons light up.
R In automatic mode, you can also use the
ñ buttontos etac limate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM leve lisrecommended.
R Set th etem peratur eto22†.
R Only use th edemisting function briefly until
th ew indscree nisclear again.
R Only use the air-recirculation mode briefly,
e.g. if there are unpleasant outside odours
or when in atunnel. The windows could
otherwise mist up as no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the tem-
perature settings on the driver's side for
the front-passenger side and the rear com-
partment as well.T he indicator lamp above
the á button goes out.
R Use the residual heat function if you want
to heat or ventilate the vehicle interior
when the ignition is switched off. The resid-
ual heat function can only be activated or
deactivated with the ignition switched off. Operating the climate control system
Switching climate control on/off
Points to observe before use i
If climate control is switched off, the air
supply and air circulation are also switched
off. Only use this settingf orab rief period.
The windows could otherwise mist up.
i Switch on climate control primarily using
the à button (Y page 128). Switching on/off X
Turn the key to position 2in the ignition
lock.
X To switch on: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the ^button.
The indicator lamp in the ^button goes
out. The previous settings are reactivated.
X To switch off: press the^button.
The indicator lamp in the ^button lights
up. Activating/deactivating the cooling
with air dehumidification function
Points to observe before use G
WARNING
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.
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.
Condensation may drip from the underside of
the vehicle when cooling mode is active. This
is normal and not asign that there is amal-
function.
i The cooling with air dehumidification
function uses refrigerant R134a. This
refrigerant does not contain chlorofluoro-
carbons, and therefore does not damage
the ozone layer. Operating the climate control system
127Climatecontrol Z

Switching on/off
X
To activate: 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 adelayed switch-of ffeature.
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 Visit aqualified specialist workshop. Setting climat
econtrol to automatic
mode
In automatic mode, the set temperature is
maintained automatically at aconstan tlevel.
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.
X Turn the key to position 2in the ignition
lock.
X Set the desired temperature.
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Automatic air distribution and airflow
are activated.
i THERMOTRONIC automatic climate con-
trol: when automatic mode is activated, you
can select aclimate mode (Y page 128).X
To switch off: press the_button.
or
X Press the IorK button.
The indicator lamp in the Ãbutton goes
out. Setting the climat
emode
In automatic mode you can select the follow-
ing climate modes:
FOCUS high airflow that is set slightly cooler
MEDIUM medium airflow, standard setting
DIFFUSEl ow airflow that is set slightly
warmer and with less of adraught
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 automatic climate control Different temperatures can be set for the
driver's and front-passenge rsides.
X Turn the key to position 2in the ignition
lock.
X To increase/reduce: turnc ontrol :or
B clockwise or anti-clockwise
(Y page 125).
Only change the temperature settin gin
small increments. Start at 22 †. 128
Operating thec
limate control systemClimate control

THERMOTRONI
Cautomatic climate
control THERMOTRONIC automatic climate control zones
Yo uc an select different temperatur esettings
for the driver's and front-passenge rsides as
well as for the rear compartment.
X Turn the key to position 2in the ignition
lock.
X To increase/reduce th etemperatur ein
th ef ront: turnc ontrols :and Bclock-
wise or anti-clockwise (Y page 126).
Only change the temperature settin gin
small increments. Start at 22 †.
X To increase/reduce th etemperatur ein
th er earc ompartment using th efront
control panel: press theábutton.
The indicator lamp in the ábutton goes
out.
X Turn control :clockwise or anti-clockwise
(Y page 126).
Only change the temperature settin gin
small increments. Start at 22 †.
The temperature settin gfor the driver's
side is adopted for the rear compartment
and the front-passenger side.
X To increase/reduce th etemperatur ein
th er earc ompartment using th erear
control panel: press therors
button on the rear control panel.
Only change the temperature settin gin
small increments. Start at 22 †. Setting th
eair distribution
Air distribution settings P
Directsthe airflow through the centre
and side air vents
O Directsthe airflow through the foot-
well air vents
S Directsthe airflow through the centre
and side air vents as well as the foot-
well air vents
¯ Directsthe airflow through the demis-
ter vents
b Directsthe airflow through the demis-
ter ,centr eand side air vents (only for
certain countries).
a Directsthe airflow through the foot-
well and demister vents
_ Directsthe airflow through the demis-
ter vents ,the centr eand side ai rvents
as well as the footwell air vents
i Regardless of the air distribution setting,
airflow is alway sdirected through the side
air vents. The side air vent scan only be
closed when the controls on the side air
vent sare turned downwards.
Adjusting 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
Adjusting X
Turn the key to position 2in the ignition
lock.
X To increase: press theKbutton.
X To reduce: press theIbutton.
i You can use THERMOTRONIC automatic
climate control to set the airflow in the rear
compartment separately. Operating thec
limatecontrol system
129Climatecontrol Z

Switching the ZONE function on/off
X To switch on: press theábutton.
The indicator lamp above the ábutton
lights up.
THERMATIC automatic climate control: the
temperature settingf or the driver's side is
not adopted for the front-passenger side.
THERMOTRONIC automatic climate con-
trol: the temperature settingf or the driver's
side is not adopted for the front-passenger
side and the rear compartment.
X To switch off: press theábutton.
The indicator lamp above the ábutton
goes out.
THERMATIC automatic climate control: the
temperature settingf or the driver's side is
adopted for the front-passenger side.
THERMOTRONIC automatic climate con-
trol: the temperature settingf or the driver's
side is adopted for the front-passenger side
and the rear compartment. Demisting the windscreen
You can use this function to demist the wind-
screen or to demist the inside of the wind-
screen and the side windows.
Switch off the "demisting" function as soon
as the windscreen is clear again.
X Turn the key to position 2in the ignition
lock.
X To activate: press the¬button.
The indicator lamp in the ¬button lights
up.
The climate control system switches to the
following functions:
R heating with dehumidification on
R high airflow (depending on the outside
temperature)
R high temperature (depending on the out-
side temperature) R
air distribution to the windscreen and
front side windows
R air-recirculation mode off
X To deactivate: press the¬button.
The indicator lamp in the ¬button goes
out. The previous settings are reactivated.
The heating with air dehumidification func-
tion remains on. Air-recirculation mode
remains deactivated.
or
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 125) (THERMATIC auto-
matic climate control), (Y page 126)
(THERMOTRONIC automatic climate con-
trol ).
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 130).
i You should only select this settingu ntil
the windscreen is clear again.
Windows misted up on the outside X
Press the _button repeatedly until the
P orO symbol appears in the dis-
play.
i You should only select this settingu ntil
the windscreen is clear again. 130
Operating the climate control systemClimate control

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

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

Problems with the auxiliary heating/ventilation
Display messages Possible causes/consequences and
M Solutions
FAIL The starter battery is not charged sufficiently or the system is
faulty.
X
Charge the starter battery.
X Make another attempt to switch on the auxiliary heating using
the remote control.
X Have the auxiliary heating checked at aqualified specialist
workshop. $
FAIL The signal transmission between the transmitter and the vehicle
is faulty.
X
Change your position in relation to the vehicle, moving closer if
necessary.
X Make another attempt to switch the auxiliary heating on or off
using the remote control. ©
FAIL There is not enough fuel in the fuel tank,ort
he auxiliary heating
is faulty.
X Refuel at the nearest filling station.
X Make another attempt to switch on the auxiliary heating using
the remote control.
X Have the auxiliary heating checked at aqualified specialist
workshop. Adjusting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air
vents. This could cause burns or frostbit eto
bare skin in the immediate vicinity of the
vents. Keep bare skin away from these air
outlets. If necessary, direct the airflow away
to ad ifferent area of the vehicle interior. In order to ensure the direct flow of fresh air
through the air ventsi
nto the vehicle interior,
please observe the following notes:
R keep the air inlet between the windscreen
and the bonnet free of blockages, such as
ice, snow or leaves.
R never cover the ventsorv entilation grilles
in the vehicle interior. 136
Adjusting the air ventsClimate control

Setting the centre air vents
:
Centre air vent, left
; Centre air vent, right
= Centre vent thumbwheel, right
? Centre vent thumbwheel, left
X To open/close: turn thumbwheels =
and ?up or down. Setting the side air vents
X
To open/close: turn thumbwheel =up or
down.
i Side window demister vent :is only
open when side air vent ;is open. Setting the glove compartment air
vent
! Close the air vent when heating the vehi-
cle.
At high outside temperatures, open the air
vent and activate the "cooling with air dehu- midification" function. Otherwise, temper-
ature-sensitive items stored in the glove
compartmen
tcould be damaged. :
Air vent thumbwheel
; Air vent
When automatic climate control is activated,
the glove compartment can be ventilated, for
instance to cool its contents.T he level of air-
flow depends on the airflow and air distribu-
tion settings.
X To open/close: turn thumbwheel :
clockwise or anti-clockwise. Setting the rear-compartment air
vents
Setting the centre vents in the rear com-
partment :
Rear-compartment air vent thumbwheel
; Rear-compartment air vent,r ight Adjusting the air vents
137Climatecontrol Z

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variation sare pos-
sible. Not ethat your vehicle may not be
equipped with all of the function sdescri-
bed. This is also the case for system sand
function srelevan ttosafety.
i Read the information on qualified special-
ist workshops: (Y page 23). Running-in notes
Important safet
ynotes
New and replaced brake pads and discs only
reach their optimum brakin geffec tafter sev-
eral hundre dkilometres of driving. Compen-
sate for this by applying greater force to the
brake pedal. The first 1,500 km
If you treat the engine with sufficient care
from the very start, you wil lberewarded with
excellent performance for the remainder of
the engine' slife.
R Drive at varying vehicle speeds and engine
speeds for the first 1,500 km.
R Avoid overstraining the vehicle during this
period, e.g. driving at ful lthrottle.
R Change gea ringood time, before the rev
counter needle is Ôof the way to the red
area of the rev counter.
R Do not shift down agear manually in order
to brake.
R Try to avoid depressing the accelerator
pedal beyond the point of resistanc e(kick-
down).
R The shift ranges 3,2or 1should only be
engaged when driving slowly, e.g. when
driving in mountainous terrain. After 1500 km
,you may graduall yaccelerate
the vehicle to full road and engine speeds.
Additional running-in notes for AMG vehicles:
R Do not drive at speeds above 140 km/hf or
the first 1500 km.
R Only allow the engine to reach amaximum
engine speed of 4500 rpm briefly.
i You should also observe these notes on
runnin ginift he engine or parts of the drive
train on your vehicle have been replaced. AMG vehicles with rear axle differen-
tial lock
Your vehicle is equipped with aself-locking
differential on the rear axle. Change the oil
after arunning-in period of 3000kmto
improve protection of the rear axle differen-
tial. This oil change will lengthen the service
life of the differential. Have the oil change
carried out at aqualified specialist workshop. Driving
Important safet
ynotes G
WARNING
Objects in the driver's footwell can restrict the
pedal travel or obstruct adepressed pedal.
The operatin gand road safety of the vehicle
is jeopardised. There is arisk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Fit the floormats
securely and as specified in order to ensure
sufficien tclearanc efor the pedals. Do not use
loose floormats. G
WARNING
Unsuitable footwear can hinde rcorrect usage
of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers 140
DrivingDriving and parking