MERCEDES-BENZ C-CLASS COUPE 2018 Owner's Manual

When the engine is running and the vehicle is
stationary: if you move the selector lever from a
driving position toP, the daytime running lamps
and low-beam headlamps go out after three
minutes.
When the engine is running, the vehicle is sta-
tionary and in bright ambient light: if you turn the
light switch to the Tposition, the daytime
running lamps and parking lamps switch on.
If the engine is running and you turn the light
switch to the Lposition, the manual settings
take precedence over the daytime running
lamps.
Low-beam headlamps
GWARNING
When the light switch is set to Ã, the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is a risk of an
accident.
In such situations, turn the light switch to
L.
Even if the light sensor does not detect that it is
dark, the parking lamps and low-beam head-
lamps switch on when the ignition is switched on and the light switch is set to the Lposition.
This is a particularly useful function in the event
of rain and fog.
XTo switch on the low-beam headlamps:
turn the SmartKey to position 2in the igni-
tion lock or start the engine.
XTurn the light switch to the Lposition.
The green Lindicator lamp in the instru-
ment cluster lights up.
Rear fog lamp
The rear fog lamp improves visibility of your
vehicle for the traffic behind in the event of thick
fog. You must observe the legal requirements
for the country in which you are currently driving
when operating the rear fog lamp.
XTo switch on the rear fog lamp: turn the
SmartKey in the ignition lock to position 2or
start the engine.
XTurn the light switch to the LorÃ
position.
XPress the Rbutton.
The yellow Rindicator lamp on the instru-
ment cluster lights up.
Parking lamps
!If the battery charge is very low, the parking
lamps or standing lamps are automatically
switched off to enable the next engine start.
Always park your vehicle safely and in a well lit
area, in accordance with the relevant legal
stipulations. Avoid using the Tparking
lamps over a period of several hours. If pos-
sible, switch on the right-hand Xor left-
hand W standing lamps.
XTo switch on the parking lamps: turn the
light switch to the Tposition.
The green Tindicator lamp on the instru-
ment cluster lights up.
Standing lamps
Switching on the standing lamps ensures the
corresponding side of the vehicle is illuminated.
XTo switch on the standing lamps: turn the
Smart Key to position uin the ignition lock or
remove the SmartKey.
XTurn the light switch to the W(left-hand
side of the vehicle) or X(right-hand side of
the vehicle) position.
Combination switch
:High-beam headlamps
;Turn signal, right
Exterior lighting109
Lights and windshield wipers
Z

=High-beam flasher
?Turn signal, left
XTo indicate briefly:press the combination
switch briefly to the pressure point in the
direction of arrow ;or?.
The corresponding turn signal flashes three
times.
XTo indicate: press the combination switch
beyond the pressure point in the direction of
arrow ;or?.
XTo switch on the high-beam headlamps:
turn the light switch to the LorÃ
position.
XPress the combination switch beyond the
pressure point in the direction of arrow :.
In the Ãposition, the high-beam head-
lamps are switched on only when it is dark and
the engine is running.
The blue Kindicator lamp on the instru-
ment cluster lights up when the high-beam
headlamps are switched on.
XTo switch off the high-beam headlamps:
move the combination switch back to its nor-
mal position.
The blue Kindicator lamp on the instru-
ment cluster goes out.
Vehicles with Adaptive Highbeam Assist:
If Adaptive Highbeam Assist is active, it auto-
matically controls activation and deactivation of
the high-beam headlamps (
Ypage 110).
XHigh-beam flasher: pull the combination
switch in the direction of arrow =.
Hazard warning lamps
XTo switch the hazard warning lamps on or
off: press button :.
The turn signal lamps flash when the hazard
warning lamps are switched on. If you now switch on a turn signal lamp using the com-
bination switch, only the turn signal lamp on
the corresponding side of the vehicle will
flash.
The hazard warning lamps switch on automati-
cally if an air bag is deployed.
The hazard warning lamps still operate if the
ignition is switched off.
Cornering light function
The cornering light function improves the illu-
mination of the road over a wide angle in the
direction you are turning, enabling better visi-
bility in tight bends, for example. It can only be
activated when the low-beam headlamps are
switched on.
Active:
Rif you are driving at speeds below 25 mph
(40 km/h) and switch on the turn signal or
turn the steering wheel
Rif you are driving at speeds between 25 mph
(40 km/h) and 45 mph (70 km/h) and turn
the steering wheel
The cornering lamp may remain lit for a short
time, but is automatically switched off after no
more than three minutes.
Adaptive Highbeam Assist
General notes
You can use this function to set the headlamps
to change between low beam and high beam
automatically. The system recognizes vehicles
with their lights on, either approaching from the
opposite direction or traveling in front of your
vehicle, and consequently switches the head-
lamps from high beam to low beam.
The system automatically adapts the low-beam
headlamp range depending on the distance to
the other vehicle. Once the system no longer
detects any other vehicles, it reactivates the
high-beam headlamps.
The system's optical sensor is located behind
the windshield near the overhead control panel.
110Exterior lighting
Lights and windshield wipers

Important safety notes
GWARNING
Adaptive Highbeam Assist does no trecognize
road users:
Rwho have no lights ,e.g. pedestrian s
Rwho havepoor lighting ,e.g. cyclist s
Rwhoselighting is blocked, e.g. by abarrier
On ver yrar eoccasions, Adaptive Highbeam
Assist may fail to recognize other road user s
that have lights ,or may recognize them to o
late. In this, or in similar situations, th eauto -
matic high-beam headlamps will no tbe deac -
tivated or will be activated regardless .Ther eis
a ris kof an accident.
Always carefully observ eth etraffic condition s
and switch off th ehigh-beam headlamps in
goo dtime.
Adaptive Highbeam Assist canno ttak eint o
accoun troad ,weather or traffic conditions.
Adaptive Highbeam Assist is only an aid. You are responsible for adjusting th evehicle's lighting
to th eprevailing light, visibilit yand traffic con-
ditions.
In particular, th edetection of obstacles can be
impaired if:
Rthere is poor visibility, e.g. due to fog ,heav y
rain or snow
Rthere is dirt on th esensor sor anythin gelse
covering th esensor s
Switching Adaptive Highbeam Assist
on/off
XTo switch on: turnth eligh tswitch to th e
à position .
XPress th ecombination switch forwards
beyon dth epressur epoin t (Ypage 109).
The _ indicator lamp on th emultifunction
display lights up when it is dark and th eligh t
sensor switches on th elow-beam headlamps .
If you are driving at speeds abov eapprox -
imately 16 mph (25 km/h):
The headlamp range is set automatically
depending on the distance between the vehi-
cle and other road users. If you are driving at speeds above approx-
imately 19 mph (30 km/h)
and no other road
users are detected:
The high-beam headlamps are switched on
automatically. The Kindicator lamp on the
instrument cluster also lights up.
If you are driving at speeds below approx-
imately 16 mph (25 km/h) or other road users are detected or the roads are adequately lit:
The high-beam headlamps are switched off
automatically. The Kindicator lamp on the
instrument cluster goes out. The _indi-
cator lamp on the multifunction display
remains lit.
XTo switch off: move the combination switch
back to its normal position or move the light
switch to another position.
The K indicator lamp on the instrument
cluster goes out.
Headlamps fogged up on the inside
Certain climatic and physical conditions may
cause moisture to form in the headlamp. This
moisture does not affect the functionality of the
headlamp.
Interior lighting
Overview of interior lighting
:p Left-hand front reading lamp
;|Automatic interior lighting control
=c Front interior lighting
?uRear interior lighting
ApRight-hand front reading lamp
Interior lighting111
Lights and windshield wipers
Z

Interior lighting control
General notes
In order to preven tth evehicle's battery from
discharging ,th einterio rlighting function sare
automatically deactivated after som etime
except for when th eSmartKey is in position 2
in th eignition lock.
The color and brightness of th eambien tlighting
are set usin gth emultimedia system (see Digital
Operator's Manual).
Automatic interior lighting control
XTo switch on or off :press th e| button.
When th eautomatic interio rlighting control is
activated, th ebutto nis flus hwit hth eover-
head control panel.
The interio rlighting automatically switches on if
you:
Runlock th evehicl e
Ropenadoor
Rremove th eSmartKey from th eignition loc k
The interio rlighting is switched on for aset time
when th eSmartKey is remove dfrom th eignition
lock. This delaye dswitch-off can be adjusted via
th emultimedia system (see Digital Operator's
Manual).
Replacing bulbs
Important safety notes
GWARNIN G
Bulbs, lamp sand connectors can get ver yhot
when operating .If you chang e abulb, you
could burn yourself on these components.
Ther eis aris kof injury.
Allow these component sto cool down before
changing abulb.
Do no tuse abulb if it has been dropped or if it s
glass tub ehas been scratched.
The bulb may explod eif:
Ryou touch it
Rit is hot
Ryou dro pit
Ryou scratch it Use bulbs only in closed lamp
sthat hav ebeen
designed for this purpose .Only instal lspar e
bulbs of th esam etyp eand th especifie dvolt-
age.
Mark son th eglass tub ereduce th eservic elife
of th ebulbs .Do no ttouch th eglass tub ewit h
your bare hands. If necessary, clean th eglass
tub ewhen cold wit halcohol or spirit and rub it
off wit h alint-free cloth .
Protect bulbs from moisture during operation .
Do no tallow bulbs to come int ocontact wit h
liquids.
Replac eonly th ebulbs listed (
Ypage 112).
Hav eth ebulbs that you canno tchang eyourself
replace dat aqualified specialist workshop.
If you require assistanc ereplacing bulbs ,con-
sult aqualified specialist workshop.
If th ene wbulb still does no tligh tup, consult a
qualified specialist workshop.
Headlamps and lights are an important aspect of
vehicl esafety. You must therefor emak esur e
th at the
se function correctl
yat all times .Hav e
th eheadlamp setting checke dregularly.
Vehicles with LED headlamps: thefron tand
rear ligh tclusters of your vehicl eare equipped
wit hLE Dbulbs .Do no treplace th ebulbs your-
self .Contac t aqualified specialist workshop
whic hhas th enecessar yspecialist knowledge
and tools to carry out th ewor krequired.
Overview of bulb types
You can replace th efollowin gbulbs .The bulb
typ ecan be foun din th elegend .
Halogen headlamps
:Low-beam headlamp: H7 55 W
;High-beam headlamp: H7 55 W
=Turn signal lamp:PWY 24 W
112Replacing bulbs
Lights and windshield wipers

Replacing front bulbs (vehicles with
halogen headlamps)
Low-beam headlamps
XSwitch off the lights.
XOpen the hood.
XTurn housing cover :counter-clockwise and
remove it.
XTurn bulb holder ;counter-clockwise and
remove it.
XPull defective bulb out of bulb holder ;.
XInsert new bulb into bulb holder;.
XInsert bulb holder;and turn it clockwise.
XPress on housing cover :and turn it clock-
wise.
High-beam headlamps
XSwitch off the lights.
XOpen the hood.
XTurn housing cover :counter-clockwise and
remove it.
XTurn bulb holder ;counter-clockwise and
remove it.
XPull defective bulb out of bulb holder ;.
XInsert new bulb into bulb holder;.
XInsert bulb holder;and turn it clockwise.
XPress on housing cover :and turn it clock-
wise.
Turn signals
XRemove the cover in the front wheel housing
(Ypage 113).
XTurn housing cover :counter-clockwise and
remove it.
XTurn bulb holder ;counter-clockwise,
unlock and remove it.
XPull defective bulb out of bulb holder ;.
XInsert new bulb into bulb holder;.
XInsert bulb holder;and turn it clockwise.
XPress on housing cover :, turn it to the right
and lock it.
XReplace the cover in the front wheel housing
(Ypage 113).
Removing and installing the cover in the
front wheel housing
You must remove the cover of the front wheel
housing before you can change the front turn
signal lamp.
Replacing bulbs113
Lights and windshield wipers
Z

XTo remove:switch off the lights.
XTurn the front wheels inwards.
XTurn rotary knob :180° outwards until it
stops using a suitable object.
Cover ;is released.
XFold cover ;up.
XTo install: insert cover ;into the left, right
and two lower catches.
XTurn rotary knob :180° inwards until it
stops using a suitable object.
Cover ;is locked.
Windshield wipers
Switching the windshield wipers
on/off
!
Do not operate the windshield wipers when
the windshield is dry, as this could damage
the wiper blades. Moreover, dust that has col-
lected on the windshield can scratch the glass
if wiping takes place when the windshield is
dry.
If it is necessary to switch on the windshield
wipers in dry weather conditions, always use
washer fluid when operating the windshield
wipers.
!If the windshield wipers leave smears on the
windshield after the vehicle has been washed
in an automatic car wash, wax or other resi-
dues may be the reason for this. Clean the
windshield using washer fluid after washing
the vehicle in an automatic car wash.
!Intermittent wiping with rain sensor: due to
optical influences and the windshield becom-
ing dirty in dry weather conditions, the wind-
shield wipers may be activated inadvertently.
This could then damage the windshield wiper
blades or scratch the windshield.
For this reason, you should always switch off
the windshield wipers in dry weather.
1$ Windshield wiper off
2ÄIntermittent wipe, normal
3ÅIntermittent wipe, frequent
4°Continuous wipe, slow
5¯Continuous wipe, fast
BíSingle wipe
î Wipe with washer fluid
XSwitch on the ignition.
XTurn the combination switch to the corre-
sponding position.
Vehicles with a rain sensor: in theÅor
Ä position, the appropriate wipe frequency
is automatically set according to the intensity of
the rain. In the Åposition, the rain sensor is
more sensitive than in the Äposition, caus-
ing the windshield wiper to wipe more fre-
quently.
If the wiper blades are worn, the windshield will
no longer be wiped properly. This could prevent
you from observing the traffic conditions.
Replacing the wiper blades
Important safety notes
GWARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you could be trapped by the wiper arm. There is a risk of
injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades.
!Never open the hood if a windshield wiper
arm has been folded away from the wind-
shield.
Never fold a windshield wiper arm without a
wiper blade back onto the windshield.
114Windshield wipers
Lights and windshield wiper s

Hold the windshield wiper arm firmly when
you change the wiper blade. If you release the
windshield wiper arm without a wiper blade
and it falls onto the windshield, the windshield
may be damaged by the force of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified spe-
cialist workshop.
!To avoid damaging the wiper blades, make
sure that you touch only the wiper arm of the
wiper.
Changing the windshield wiper blades
Moving the wiper arms to a vertical posi-
tion
On vehicles without KEYLESS-GO or KEY-
LESS‑GO start function:
XTurn the SmartKey to position 1or2 in the
ignition lock (Ypage 126).
XSet the windshield wipers to the °posi-
tion on the combination switch.
XWhen the wiper arms are vertical to the hood,
turn the SmartKey to position uin the igni-
tion lock and remove SmartKey.
XFold the wiper arm away from the windshield.
On vehicles with KEYLESS-GO or KEY-
LESS‑GO start function:
XSwitch off the engine.
XRemove your foot from the brake pedal.
XSet the windshield wiper to the °position
on the combination switch.
XPress the Start/Stop button repeatedly until
the windshield wiper starts.
XWhen the wiper arms are vertical to the hood,
press the Start/Stop button.
XFold the wiper arm away from the windshield.
Removing the wiper blades
XHold on to the wiper arm with one hand. With
the other hand, turn the wiper blade in the
direction of arrow :away from the wiper arm
as far as it will go.
XSlide the catch ;in the direction of arrow =
until it engages in the removal position with a
noticeable click.
XRemove the wiper blade in the direction of
arrow ?away from the wiper arm.
Installing the wiper blades
XInsert the new wiper blade into the wiper arm
in the direction of arrow :.
Windshield wipers115
Lights and windshield wipers
Z

XSlide the catch;in the direction of arrow =
until it engages in the locking position with a
noticeable click.
XMake sure that the wiper blade is seated cor-
rectly.
XFold the wiper arm back onto the windshield.
XRemove the protective film :from the ser-
vice indicator on the tip of the wiper blade.
If the color of the service indicator changes from
black to yellow, the wiper blades should be
replaced.
iThe duration of the color change varies
depending on the usage conditions.
Problems with the windshield wipers
ProblemPossible causes/consequences and MSolutions
The windshield wipers
are jammed.Leaves or snow, for example, are obstructing windshield wiper move-
ment. The wiper motor has been deactivated.
XSwitch off the engine.
XRemove the SmartKey from the ignition lock.
or, on vehicles with KEYLESS-GO or KEYLESS ‑GO start function:
XOpen the driver's door.
The vehicle electronics are now in positionu. This means: "Key
removed".
XRemove the cause of the obstruction.
XSwitch the windshield wipers back on.
The windshield wipers
fail completely.The windshield wiper drive is malfunctioning.
XSelect another wiper speed on the combination switch.
XHave the windshield wipers checked at a qualified specialist work-
shop.
The windshield washer
fluid from the spray noz-
zles no longer hits the
center of the windshield.The spray nozzles are misaligned.
XHave the spray nozzles adjusted at a qualified specialist workshop.
116Windshield wipers
Lights and windshield wipers

Overview of climate control systems
General notes
Observe the settings recommended on the fol-
lowing pages. The windows could otherwise fog
up.
To prevent the windows from fogging up:
Rswitch off climate control only briefly
Rswitch on air-recirculation mode only briefly
Rswitch on the cooling with air dehumidifica-
tion function
Ractivate the "Windshield defrosting" function
briefly, if required
Climate control regulates the temperature and
air humidity in the vehicle interior. The interior
filter cleans the air, thus improving the 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.
If you start the engine using your smartphone,
the last selected climate control setting is reac-
tivated (
Ypage 129). The integrated filter filters out most particles of
dust and soot and completely filters out pollen.
It also reduces gaseous pollutants and odors. A
clogged filter reduces the amount of air suppliedto the vehicle interior. For this reason, you
should always observe the interval for replacing
the filter, which is specified in the Maintenance
Booklet. As it depends on environmental condi-
tions, e.g. heavy air pollution, the interval may
be shorter than stated in the Maintenance Book-
let.
iVentilate the vehicle for a brief period during
warm weather, e.g. using the convenience
opening feature (
Ypage 88). This will speed
up the cooling process and the desired inte-
rior temperature will be reached more
quickly.
iIt is possible that the blower may be activa-
ted automatically 60 minutes after the Smart-
Key has been removed depending on various
factors, e.g. the outside temperature. The
vehicle is then ventilated for 30 minutes to dry
the automatic climate control.
Control panel for dual-zone automatic climate control
Example: control panel for dual-zone automatic climate control
:
Sets the temperature, left (Ypage 119)
;Sets the air distribution (Ypage 120)
=Sets the airflow (Ypage 120)
Switches off climate control (
Ypage 118)
Overview of climate control systems117
Climate control

?Sets climate control to automatic (Ypage 119)
ADefrosts the windshield (Ypage 120)
BCalls up the climate control menu of the multimedia system (Ypage 261)
CSwitches the rear window defroster on/off (Ypage 121)
DActivates or deactivates synchronization (Ypage 120)
ESwitches air-recirculation mode manually on/off (Ypage 121)
FSwitches cooling with air dehumidification on/off (Ypage 119)
GSets the temperature, right (Ypage 119)
Optimum use of automatic climate
control
Optimum use of the automatic climate
control
The following contains notes and recommenda-
tions on optimum use of dual-zone automatic
climate control.
XActivate climate control using the Ã
rocker switch. The indicator lamp above the
à rocker switch lights up. The "Cooling
with dehumidification" function is activated in
automatic mode.
XSet the temperature to 72 ‡ (22 †).
iOnly use the "Windshield defrosting" func-
tion briefly until the windshield is clear again.
iOnly use air-recirculation mode briefly, e.g.
if there are unpleasant outside odors or when
in a tunnel. The windows could otherwise fog
up, since no fresh air is drawn into the vehicle in air-recirculation mode.
DYNAMIC SELECT switch (except
Mercedes-AMG C 63 /C63S)
You can choose between various drive programs
with the DYNAMIC SELECT switch
(
Ypage 134).
If you have selected drive program E:
Rwhen heating, the electrical heater booster is
deactivated and heat output is reduced as a
result
Rthe rear window defroster running time is
reduced If you have selected drive program
C,Sor S+,
the current climate settings are maintained.
ECO start/stop function
During automatic engine switch-off, the climate
control system only operates at a reduced capa-
city. If you require the full climate control output,
you can switch off the ECO start/stop function
by pressing the ECO button (
Ypage 131).
Operating the climate control sys-
tems
Activating/deactivating climate con-
trol
General notes
When the climate control is switched off, the air
supply and air circulation are also switched off.
The windows could fog up. Therefore, switch off
climate control only briefly
Switch on climate control primarily using the
à rocker switch (
Ypage 119).
Activating/deactivating
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 126).
XTo switch on: set the airflow to level 1or
higher using the Hrocker switch.
XTo switch off: set the airflow to level 0using
the H rocker switch.
118Operating the climate control systems
Climate control