engine MERCEDES-BENZ C-CLASS COUPE 2015 Service Manual

The light setting is automatically selected
accordin
gtothe brightness of the ambient light
(exception: poor visibility due to weather condi- tions such as fog, snow or spray):
R key in position 1in the ignition lock: the side
lamps are switched on or off automatically
depending on the brightness of the ambient
light.
R with the engine running: depending on the
ambient light conditions, the daytime driving
lights or the side lamps and dipped-beam
headlamps are switched on or off automati-
cally.
X To switch on the automatic headlamps:
turn the light switch to the
Ãposition. G
WARNING
When the light switch is set to Ã,the
dipped-beam headlamps may not be switched on automatically if there is fog, snow or othercauses of poor visibility due to the weather
conditions such as spray. There is arisk of an
accident.
In such situations, turn the light switch to
L.
The automatic headlamp feature is only an aid.
The driver is responsible for the vehicle lighting at all times.
The daytime driving lights improve the detecta-
bility of your vehicle during the day.
When the side lamps and dipped-beam head-
lamps are switched on, the green T(side
lamps) and L(dipped-beam headlamps)
indicator lamps in the instrument cluster light
up.
Dipped-beam headlamps When the ignition is switched on and the light
switch is in the Lposition, the side lamps
and dipped-beam headlamps are switched on
even if the light sensor does not sense dark
ambient light conditions. This is advantageous
when there is fog or rain.
X To switch on the dipped-beam headlamps:
turn the key in the ignition lock to position 2
or start the engine.
X Turn the light switch to the Lposition.
The green Lindicator lamp in the instru-
ment cluster lights up. Rear fog lamp
The rear foglamp improves the visibility of your
vehicle in heavy fog for the following traffic.
Please observe the country-specific laws on the
use of rear foglamps.
X To switch on the rear foglamp: turn the key
in the ignition lock to position 2or start the
engine.
X Turn the light switch to the LorÃ
position.
X Press the Rbutton.
The yellow Rindicator lamp in the instru-
ment cluster lights up.
X To switch off the rear foglamp: press the
R button.
The yellow Rindicator lamp in the instru-
ment cluster goes out.
Side lamps
! If the battery has been discharged to
alow
charge level, the side lamps or parking lamps
are automatically switched off to enable the
next engine start .Always leave your vehicle in
as afe position and adequately lit in accord-
ance with traffic regulations. Avoid using the
side lamps Tforaperiod of several hours.
If possible, switch on the right Xor left
W parking lamp.
X To switch on: turn the light switch to the
T position.
The green Tindicator lamp in the instru-
ment cluster lights up.
Parking lamps Switching on the parking lamps ensures that the
corresponding side of the vehicle is illuminated.
X To switch on the parking lamps: the key
should not be in the ignition lock or it should
be in position 0.
X Turn the light switch to the W(left-hand
side of the vehicle) or X(right-hand side of
the vehicle) position. Exterior lighting
119Lights and windscreen wipers Z

Adjusting th
eheadlamp range (halogen
headlamps) Headlamp range control
g
Driver's seat and front-passenger seat
occupied
1 Driver's seat ,front-pa ssenger seat and rear
seat soccupied
2 Driver's seat ,front-pa ssenger seat and rear
seat soccupied, boot laden
3 Driver's and front-passenger seat occupied
and maximum permissible rear axle load uti-
lised ,e.g.w hen towin gatrailer
The headlamp range control allows you to adjust
th ec oneofl ightfro mt heheadlamps to suit the
vehicl eload.
X Start th eengine.
X Turn th eheadlamp range control to th eposi-
tio nw hichc orres pondstot heload in your
vehicle. Combinatio
nswitch :
Main-beam headlamps
; Turn signal, right
= Headlamp flasher
? Turn signal, left X
To indicat ebriefly: press th ecom bination
switch briefly to th epressur epointint he
direction of arrow ;or?.
The corresponding tur nsignal flashes three
times.
X To indicate: press thecom bination switch
beyon dthe pressur epointint hedirection of
arrow ;or?.
X To switch on th
emain-beam headlamps:
tur nthe ligh tswitch to LorÃ.
X Press th ecom bination switch beyon dthe
pressur epointint hedirection of arrow :.
In the Ãposition, th emain-beam head-
lamps are only switched on when it is dark and th ee ngineisr unning.
The blue Kindicator lamp in th einstru-
men tcluste rlights up when th emain-beam
headlamps are switched on.
X To switch off th
emain-beam headlamps:
mov ethe combination switch bac ktoits nor-
mal position.
The blue Kindicator lamp in th einstru-
men tcluste rgoes out. Hazard warning lamps
X
To switch on th
ehazar dwarning lamps:
press button :.
All tur nsignals flash. If you no wswitch on a
tur nsignal usin gthe combination switch ,only
th et urns ignal lamp on th ecorres ponding
side of th evehicl ewill flash.
X To switch off th
ehazar dwarning lamps:
press button :.
The hazard warning lamps switch on automati-
call yif:
R an airba gisdeployed or
R thev ehicl edecelerate srapidly from aspeed
of abov e70km/hand comes to astandstill 120
Exterior lightingLight
sand windscreen wipers

If the wiper blades are worn, the windscreen will
no longer be wiped properly. This could mean
you are unabletoo bserve the traffic conditions. Replacin
gthe wiperb lades
Important safety notes G
WARNING
If the windscree nwipers begin to move while
you are changing the wiper blades, you can be trapped by the wiper arm. There is arisk of
injury.
Alwayss witch off the windscreen wipers and
ignition before changing the wiper blades.
! Never open the bonnet/tailgate if
awiper
arm is folded awayf rom the windscreen/rear
window.
Never fold awindscreen wiper arm withou ta
wiper blade back onto the windscreen/rear
window.
Hold the windscree nwiper arm firmly when
you change the wiper blade. If you release the
wiper arm withou tawiper blade and it falls
onto the windscreen/rear window ,the wind-
screen/rear window may be damaged by the
force of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at aqualifieds pe-
cialist workshop.
! To avoid damaging the windscreen wiper
blades, make sure that you touch only the
wiper arm of the windscreen wiper.
Replacing the windscreen wiperb ladesMovingt
he wiperb lades to the vertical
position
On vehicles without KEYLESS-GO:
X Turn the key to position 1or 2in the ignition
lock (Y page 145).
X Set the windscree nwipers to the °posi-
tion.
X When the wiper arms have reached the verti-
cal position, turn the key to position 0and
remove it from the ignition lock.
X Fold the wiper arm awayf rom the windscreen.On vehicles with KEYLESS-GO:
X Switch off the engine.
X Remove yourf oot from the brake pedal.
X Set the windscree nwipers to the °posi-
tion.
X Press the Start/Stop button repeatedly until
the windscree nwipers start.
X When the wiper arms have reached the verti-
cal position, press the Start/Stop button.
X Fold the wiper arm awayf rom the windscreen.
Removing the wiperb lades X
Hold onto the wiper arm with one hand. With
the other hand, turn the wiper blade in the
direction of arrow :awayf rom the wiper arm
as far as it willg o.
X Slide catch ;in the direction of arrow =
until it engages in the removal positio nwith a
noticeable click. X
Remove the wiper blade in the direction of
arrow ?awayf rom the wiper arm. 126
Windscreen wipersLights and windscreenw
ipers

Problems with the windscreen wipers
Problem
Possible causes/consequences and
M
MSolutions The windscreen wipers
are jammed. 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.
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
fail completely. The windscreen wiper drive is malfunctioning.
X Select another wiper speed on the combination switch.
X Have the windscreen wipers checked at aqualified specialist work-
shop. The windscreen washer
fluid from the spray noz-
zles no longer hits the
centre of the wind-
screen. The spray nozzles are misaligned.
X Have the spray nozzles adjusted at aqualified specialist workshop. 128
Windscreen wipersLights and windscreen wipers

Overview of climat
econtrol systems General notes
Observe the settings recommended on the fol-
lowing pages. The windows could otherwise
mist up.
To preven tthe windows from mistin gup:
R switch off climate control only briefly
R activat eair-recirculation mode only briefly
R switch on "Cooling with air dehumidification"
R activat ethe windscreen demistin gfunction
briefly, if required
Climate control regulates the temperature and
air humidity in the vehicle interior. The interior
filter cleans the air, thus improvin gthe interior
climate.
The "Cooling with air dehumidification "function
is only available when the engine is running.
Optimum climate control is only achieved with
the side windows and roof closed.
The residual heat function can only be activated or deactivated with the ignition switched off
(Y page 136).
i Ventilate the vehicle for
abrief period during
warm weather, e.g. using the "Convenience
opening "feature (Y page 94). This will speed
up the cooling process and the desired inte-
rior temperature will be reached more
quickly.
i The integrated filter filters out most parti-
cles of dust and soot and completely filters
out pollen. It also reduces gaseous pollutants and odours. Aclogged filter reduces the
amount of air supplied to the vehicle interior.
For this reason, you should alway sobserve
the interval for replacing the filter, which is
specified in the Service Booklet. As this
depends on environmental conditions ,e.g.
heavy air pollution, the interval may be
shorter than stated in the Service Booklet.
i It is possible that the blower may be activa-
ted automatically 60 minutes after the key
has been removed depending on various fac-
tors ,e.g. the outside temperature. The vehi-
cle is then ventilated for 30 minutes to dry the automatic climate control. Overview of climat
econtrol systems
129Climatecontrol

tivated with the ignition switched off
.The
residua lhea tfun ctio nisd eactivated when the
ignition is switched on.
DYNAMIC SELECT switc h(exce pt
Mercedes-AMG vehicles) Yo
uc an choose between various drive programs
with the DYNAMIC SELEC Tswitch:
R manua ltransmission (Y page 154)
R automatic transmission (Y page 154)
If yo uhaves elect ed drive program E:
R the cooling outpu tisr educe dwhenc ooling
R when heating, the electrical heate rbooste ris
deactivated and heat outpu tisr educe dasa
result
R the rea rwindo wh eating running tim eis
reduced
If yo uhaves elect ed drive program C,Sor S+ ,
the current climate setting saremaintained.
EC Os tart/sto pfunction During automatic engine switch-off
,the climate
contro lonlyo perates at areduce dcapacity. If
yo ur equire the full climate contro loutput, you
can switch off the ECO start/sto pfunctio nby
pressing the ECO button (Y page 151).Operatin
gthe climate contro lsystem Switchin
gthe climate contro lon/off
General notes When climate contro
lisswitched off ,the air
supply and ai rcirculation ar ealsos witched off.
The windows could mist up .Therefore ,only
switch off climate contro lbriefly.
Switch on climate contro lprimaril yusing the
à rockerswitch (Y page 132).
Activating/deactivating X
Turn the key to position 2in the ignition lock
(Y page 145).
X To switc hon:setthe airflow to level 1or
highe rusing the Hrockerswitch.
X To switc hoff:setthe airflow to level 0using
the H rockerswitch. Operatin
gthe climate contro lsystem
131Climate control

Activating/deactivating cooling with air dehumidification
Genera lnotes If you deactivat
ethe "Cooling wit hair dehumidification "function ,the air inside th evehicl ewill not
be cooled .The air inside th evehicl ewill also no tbedehumidified. The windows can mis tupmore
quickly. Therefore ,deactivat ethe "Cooling wit hair dehumidification "function only briefly.
The "Cooling wit hair dehumidification "function is only available when th eengineisr unning. The air
inside th evehicl eisc ooled and dehumidifie daccording to th etem perature selected.
Condensation may dri pfromt heunderside of th evehicl ewhen coolin gmodeisa ctive.This is normal
and no tasign that there is amalfunction.
Activating/deactivating X
Press the ¿rockerswitch up or down
The indicator lamp abov ethe rocke rswitch lights up or goe sout.
Problem swith th e"Cooling with air dehumidification" function Problem
Possible causes/consequences and
M
MSolutions The indicator lamp above
the ¿ rockerswitch
flashes three times or
remain soff.T he cooling
wit hair dehumidification
function canno tbeacti-
vated via th emultimedia
system any longer
(Y page 301). The coolin
gwitha ir dehumidification function has been deactivated
due to amalfunction.
X Consult aqualified specialist workshop. Setting climat
econtrol to automatic
mode
Genera lnotes In automatic mode, th
eset temperature is main-
taine dautomatically at aconstant level. The
system automatically regulates th etem perature
of th edispensed air, th eairflow and th eair dis-
tribution.
The "Cooling wit hair dehumidification "function
is activated automatically in automatic mode. Automati
ccontrol X
Turn th ekeyto position 2in th eignition lock
(Y page 145).
X Se tthe desired temperature usin gthe w
rocke rswitch on th efront control unit.
X To activate: press theÃrockerswitch up
or down.
The indicator lamp abov ethe à rocker
switch lights up.
X To switch to manua loperation: press the
H rockerswitch up or down.
or X Press th eupper or lower section of the _
rocke rswitch.
The indicator lamp abov ethe à rocker
switch goes out.
In automatic mode, if you adjust th eairflow or
air distribution manually, th eindicator lamp
abov ethe à rockerswitch goe sout.T he
function whic hhas no tbeen changed manually, 132
Operating th
eclimat econtro lsystemClimat econt rol

X
Convenience closing feature: pressand
hold the grocker switch up or down until
th es ide windows start to close automatically.
Vehicles with sliding sunroof or pano-
rama sliding sunroof: thes lidin gsunroo for
panorama slidin gsunroo fcloses simultane-
ously.
The indicator lamp above the grocker
switch light sup. Air-recirculation mode is
activated.
If you open th eside windows or th esliding
sunroo forthepanorama slidin gsunroo fman-
ually after closin gthemw ith th econvenience
closin gfeature, they will remain in this posi-
tio nw hen opened usin gthe convenience
opening feature.
If part softhebody are in th eclosing area during
convenience closing, proceed as follows:
X Pres sthe W button to stop th eside win-
dows.
The side windows stop.
X To then open th eside windows, pres sthe
W button again.
X Only vehicles with sliding sunroof or pan-
orama sliding sunroof: pressthe 3
switch to stop th eslidin gsunroo forpano-
rama slidin gsunroof.
The slidin gsunroo forpanorama slidin gsun-
roo fstops.
X To then open th eslidin gsunroo forpanorama
slidin gsunroof, pull back on the 3button.
Notes on th eautomatic reversing feature for:
R thes ide windows (Y page 93)
R thes lidin gsunroo forpanorama slidin gsun-
roo f(Ypage 97)
X Convenience opening feature: pressand
hold the grocker switch up or down until
th es ide windows start to open automatically.
Vehicles with sliding sunroof or pano-
rama sliding sunroof: thes lidin gsunroo for
panorama slidin gsunroo fopen ssimultane-
ously.
The indicator lamp above the grocker
switch goes out .Air-recirculation mode is
deactivated. Switching th
eresidual hea ton/off
General notes The residual heat function is onl
yavailable with
THERMATIC automatic climate control with aux-
iliary heating.
When th eengine is switche doff,itisp ossible to
mak euse of th eresidual heat of th eengine to
continue heating or ventilating th efront com-
partmen tofthevehicle for approximately
30 minutes .The heating or ventilation time
depends on th eset interio rtemperature.
Activating/deactivating X
Turn th ekey to position 0in th eignitio nlock
or remove it (Y page 145).
X To switch on: pressthe ! rocker switch
up or down.
The indicator lamp above the !rocker
switch light sup.
The blower will run at alow speed regardless of
th ea irflow setting.
If you activat ethe residual heat function at high
temperatures, onl ythe ventilation will be acti-
vated. The blower run satmedium speed.
X To switch off: pressthe ! rocker switch
up or down.
The indicator lamp above the !rocker
switch goes out.
Residual heat is deactivated automatically:
R after approximatel y30minutes
R when th eignitio nisswitche don
R if th ebattery voltage drops
R when th eauxiliar yheating is switche don Perfume atomiser
Operating th eperfume atomiser G
WARNING
If children open th evial, they could drin kthe
perfume or it could com eintoc ontac twith
their eyes. Ther eisarisk of injury. Do not
leave children unsupervised in th evehicle.
If th eperfume liquid has been drunk, consult
ad octor. If perfume comes int ocontac twith
your eyes or skin, rinse th eeyes with clean 136
Operating th
eclimate control systemClimate control

!
Operating the auxiliary heating/ventilation
draws on the vehicle battery. After you have
heated or ventilated the vehicle amaximum of
two times, drive for alonger distance.
Switch the auxiliary heating on regularly once a
month for aboutt en minutes.
The auxiliary heating heats the air in the vehicle interior to the set temperature. This occurs with-out using the heat of the running engine. 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 or auxiliary ventilation
automaticallya djusts to changes in tempera-
ture and weather conditions. For this reason,
the auxiliary heating could switch from ventila-
tion mode to heating mode or from heating
mode to ventilation mode.
The auxiliary heating switches off when the
engine is switched off. The auxiliary ventilation
is not active if the engine is running.
The auxiliary heating or auxiliary ventilation
switches off automaticallya fter 50 minutes.
This time limit can be altered. To do this, visit a
qualified specialist workshop.
You cannot use the auxiliary ventilation to cool
the vehicle interior to atemperature lower than
the outside temperature.
Before switchingon X
Turn the key to position 2in the ignition lock
(Y page 145).
X Set the desired temperature using the w
rocker switch on the front control unit.
If you do not alter the temperature before
switching on the auxiliary heating or auxiliary
ventilation, the last temperature setting will be
adopted.
Auxiliary heating or auxiliary ventilation can also
be switched on if the manuallys et climate con-
trol is activated. Optimum comfort is attained
when the system is set to automatic mode. Set the temperature to 22 †.
You can switch the auxiliary heating or auxiliary
ventilation on or off:
R using the rocker switch on the centrec onsole
(Y page 139)
R using the remote control (Y page 140)The remote control can be used to set up to
three departure times, one of which may be pre-
selected.
Switchingt he auxiliary heating/venti-
lation on/off using the centre console
rocker switch General notes
The colours of the indicator lamps in rocker
switch
:have the following meanings:
R blue: auxiliary ventilation is switched on
R red: auxiliary heating is activated
R yellow: departure time is preselected
Activating/deactivating
X To switch on auxiliary heating or auxiliary
ventilation: press rocker switch :up or
down.
The red or the blue indicator lamp above
rocker switch :lights up.
X To set the temperature: switch on auxiliary
heating or auxiliary ventilation.
The multimedia system is activated for
approximately one minute.
X Set the desired temperature using the multi-
media system (see the separate operating
instructions).
X To switch off auxiliary heating or auxiliary
ventilation:
press rocker switch :up or
down.
The red or the blue indicator lamp above
rocker switch :goes out. Operating the climatec
ontrol system
139Climatecontrol Z

Ad
epart uret ime ha sbeen
activated .The auxiliary
ventilatio nisc urrently
activated .The numbe rin
the display shows the
remaining time (in
minutes) for the auxiliary
ventilation. If the vehicl eis
not started afte rthist ime,
the running time is
increased by fiv eminutes. Ad
epart uret ime ha sbeen
activated .The auxiliary
heating is currentl yactiva-
ted .The numbe rinthe dis-
play shows the remaining
time (i nminutes) for the
auxiliary heating .Ifthe
vehicl eisnot started after
thi stime ,the running time
is increased by five
minutes. If the engine ha
snot ye treache doperating tem-
perature when it is started ,the auxiliary heating
running time is increased .The auxiliary heating
continue storununti lthe operating temperature
is reached. If thi sisthe case, the ysymbol
appear sinthe remote contro ldisplay and the
running time is zero minutes.
Settin gthe departure time
Make sure tha tthe time set in the vehicl eis
correct before setting the departur etime (see
the separate operating instructions) .Otherwise,
the auxiliary heating ma yswitch on at the wrong
time and at an unsuitable location. Whe nsetting
the departur etime ,alsoo bserve the important
safety notes (Y page 138).
X Briefl ypress the ubutton.
X Press the ,or. button repeatedly
unti lthe time to be change dappears in the
display.
X Press the uand^ buttons simultane-
ously.
The Îsymbo linthe remote contro ldisplay
flashes.
X Press the ,or. button to set the
desired departur etime. i
The longe
ryou press the ,or. but-
ton, the faster the time changes.
X Press the uand^ buttons simultane-
ously.
The new departur etime is stored.
Activatin gthe se tdeparture time
X Briefl ypress the ubutton.
X Press the ,or. button repeatedly
unti lthe desired departur etime appear sin
the display.
X Press the ubutton.
The Ísymbol, the departur etime and,
depending on the selecte ddepart uret ime,
the letter A, BorCappear in the display.
Deactivating the se tdeparture time
X Briefl ypress the ubutton.
The status of the auxiliary heating is shown in the display.
X Press the .button.
The first departur etime stored appear sinthe
display.
X Press the ^button.
OFF is shown in the remote contro ldisplay.
Replacing the remote contro lbattery Important safety notes
G
WARNING
Batterie scontain toxi cand corrosive substan-
ces .Ifb atteries ar eswallowed, it can resul tin
severe health problems .There is ariskoff atal
injury.
Kee pbatteries ou tofthe reach of children. If
ab attery is swallowed, see kmedica lattention
immediately. H
Environmental note Batterie
scontain pollutants.
It is illega ltodispose of them
with the househol drubbish.
The ym ustbec ollected sep-
arately and disposed of in an Operatin
gthe climate contro lsystem
141Climate control
Z