2018 MERCEDES-BENZ C CLASS Owners Manual

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 119).
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 119).
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.
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.
Replacing rear bulbs
Opening and closing the side trim pan-
els
Example: right-hand side paneling
You must open the side trim panel in the trunk
before you can replace the bulbs in the tail
lamps.
XTo open: release right or left side trim
panel :at the top and fold it down in the
direction of the arrow.
XTo close: insert side trim panel :.
Rear lamp cluster
XSwitch off the lights.
XOpen the trunk.
XOpen the side trim panel (Ypage 119).
Replacing bulbs119
Lights and windshield wipers
Z

XPull out the plug.
XTurn wing nut:90° counter-clockwise and
remove the bulb holder.
XIndicator lamp ;:press the defective bulb
gently into the bulb holder, turn it counter-
clockwise and remove it from the bulb holder.
XInsert the new bulb into the bulb holder and
turn it clockwise.
XBackup lamp =:withdraw the defective
bulb from the bulb holder.
XInsert the new bulb into the bulb holder.
XRe-install bulb holder.
XTurn fender nut :90° clockwise.
XInsert the connector.
XClose the side trim panel (Ypage 119).
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.
120Windshield wipers
Lights and windshield wipers

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.
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 136).
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.
Windshield wipers121
Lights and windshield wipers
Z

Installing the wiper blades
XInsert the new wiper bladeinto thewiperarm
in the direction of arrow :.
XSlide the catch ;in the direction of arrow =
unt il it engages in the locking position with a
noticeable click.
XMake sure that the wiperblade is seated cor-
rectly.
XFo ldthe wiper arm back onto the windshield.
XRemo vethe protective film:from the ser-
vice indicator on the tip of the wiper blade.
If the color of the service indicator changes from
blac k to yellow, the wiper blades should be
replace d.
iThe duration of the color change varies
depending on the usage conditions.
122Windshield wipers
Lights and windshield wipers

Problems with the windshield wipers
ProblemPossible causes/consequences andMSolutions
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.
Windshield wipers123
Lights and windshield wipers
Z

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 139).
The residual heat function can only be activated
or deactivated with the ignition switched off
(
Ypage 131). 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 92). 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.
iHybrid vehicles: be sure to observe the
notes in the supplement. Otherwise, you may
not recognize dangers.
Control panel for dual-zone automatic climate control
Example: control panel for dual-zone automatic climate control
:
Sets the temperature, left (Ypage 128)
;Sets the air distribution (Ypage 128)
124Overview of climate control systems
Climate control

=Sets the airflow (Ypage 128)
Switches off climate control (
Ypage 126)
?Sets climate control to automatic (Ypage 127)
ADefrosts the windshield (Ypage 129)
BCalls up the climate control menu of the multimedia system (Ypage 275)
CSwitches the rear window defroster on/off (Ypage 130)
DActivates or deactivates synchronization (Ypage 129)
ESwitches air-recirculation mode manually on/off (Ypage 130)
FSwitches cooling with air dehumidification on/off (Ypage 127)
GSets the temperature, right (Ypage 128)
Control panel for 3-zone automatic climate control
Example for vehicles in Canada only: control panel for 3-zone automatic climate control
Front control panel
:Sets the temperature, left (Ypage 128)
;Sets the air distribution, left (Ypage 128)
=Sets the airflow (Ypage 128)
Switches off climate control (
Ypage 126)
?Sets climate control to automatic (Ypage 127)
ADefrosts the windshield (Ypage 129)
BCalls up the climate control menu of the multimedia system (Ypage 275)
Switches the residual heat on/off (
Ypage 131)
CSwitches the rear window defroster on/off (Ypage 130)
DSwitches cooling with air dehumidification on/off (Ypage 127)
ESwitches air-recirculation mode manually on/off (Ypage 130)
FSets the air distribution, right (Ypage 128)
GSets the temperature, right (Ypage 128)
Rear control panel
HSets the temperature (Ypage 128)
Overview of climate control systems125
Climate control

IDisplay
JSets the airflow (Ypage 128)
Optimum use of automatic climate
control
Optimum use of the automatic climate
control
The following contains notes and recommenda-
tions on how best to use dual-zone automatic
climate control or 3-zone automatic climate
control (vehicles in Canada only).
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.
Vehicles with 3-zone automatic climate control:
use the "Residual heat" function if you want to
heat or ventilate the vehicle interior when the
ignition is switched off. The residual heat func-
tion can only be activated or deactivated with
the ignition switched off. The residual heat func-
tion is switched off when the ignition is switched on.
DYNAMIC SELECT switch (except
Mercedes-AMG C 63 /C63S)
You can choose between various drive programs
with the DYNAMIC SELECT switch
(
Ypage 144).
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 141).
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 127).
Activating/deactivating
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 136).
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.
i3-zone automatic climate control: when cli-
mate control is switched off, "OFF" appears in
the rear-compartment display.
126Operating the climate control systems
Climate control