MERCEDES-BENZ C-CLASS CABRIOLET 2016 Owners Manual

If the main-beam or partial main-beam head-
lamps are causing too much reflection from traf- fic signs, the lights are automatically dimmed
and glare for the driver caused by the reflectionsis thus avoided.
The system's optical sensor is located behind
the windscreen near the overhead control
panel.
Important safety notes G
WARNING
Adaptive Highbeam Assist Plus does not rec-
ognise road users:
R who have no lights, e.g. pedestrians
R who have poor lighting, e.g. cyclists
R whose lighting is blocked, e.g. by a barrier
In very rare cases, Adaptive Highbeam Assist
Plus may not recognise road users who do
have lights, or may recognise them too late. In this, or in similar situations, the automatic
main-beam headlamps will not be deactivated
or will be activated despite the presence of
other road users. There is a risk of an acci-
dent.
Always carefully observe the traffic conditions and switch off the main-beam headlamps in
good time.
Adaptive Highbeam Assist Plus cannot take into
account road, weather or traffic conditions.
Adaptive Highbeam Assist Plus is only an aid.
You are responsible for adjusting the vehicle's
lighting to the prevailing light, visibility and traf-
fic conditions.
In particular, the detection of obstacles can be
impaired in the case of:
R poor visibility, e.g. due to fog, heavy rain or
snow
R dirt on the sensors or obscured sensors Switching Adaptive Highbeam Assist
Plus on/off X
To switch on: turn the light switch to the
à position.
X Press the combination switch forwards
beyond the pressure point (Y page 116).
The indicator lamp _on the multifunction
display lights up when it is dark and the light
sensor switches on the dipped-beam head-
lamps.
At speeds above approx. 25 km/h: the head- lamp range is automatically controlled
according to the distance to other road users.
At speeds above approximately 30 km/h:
R if no other road users are detected, the
main-beam headlamps are automatically
switched on
R if other road users are detected, the partial
main-beam headlamps are automatically
switched on
The K indicator lamp on the instrument
cluster also lights up.
At speeds below approx. 25 km/h or when
there is sufficient street lighting:
R the partial main-beam headlamps are
switched off automatically
R the main-beam headlamps are switched off
automatically
The K indicator lamp on the instrument
cluster goes out. The _indicator lamp on
the multifunction display remains lit.
X To switch off:move the combination switch
back to its normal position or move the light
switch to another position.
The _ indicator lamp on the multifunction
display goes out. Headlamps misted 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. 118
Exterior lightingLights and windscreen wipers

Interior lighting
Overview of interior lighting
Front overhead control panel :
p Left-hand front reading lamp
; c Front interior lighting
= | Automatic interior lighting control
? p Right-hand front reading lamp Interior lighting control
General notes In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time
except for when the key is in position 2in the
ignition lock.
The colour and brightness of the ambient light-
ing are set using the multimedia system (see
Digital Owner's Manual).
Automatic interior lighting control X
To switch on or off: press the|button.
When the automatic interior lighting control is
switched on, the button is flush with the over- head control panel.
The interior lighting automatically switches on if
you:
R unlock the vehicle
R open a door
R remove the key from the ignition lock
The interior lighting is activated for a short time
when the key is removed from the ignition lock. This delayed switch-off can be adjusted via the
multimedia system (see Digital Owner's Man-
ual). Replacing bulbs
Important safety notes
G
WARNING
Bulbs, lamps and plug connectors can
become very hot during use. When replacing a bulb, you could burn yourself on these com-
ponents. There is a risk of injury.
Allow these components to cool down before replacing the bulb.
Do not use a bulb if it has been dropped or if its
glass tube has been scratched.
The bulb may explode if:
R you touch it
R it is hot
R you drop it
R you scratch it
Use bulbs only in closed lamps that have been
designed for this purpose. Fit only spare bulbs of the same type and the specified voltage.
Marks on the glass tube reduce the service life
of the bulbs. Do not touch the glass tube with
your bare hands. If necessary, clean the glass
tube when cold with alcohol or spirit and rub it
off with a lint-free cloth.
Protect bulbs from moisture during operation.
Do not allow bulbs to come into contact with
liquids.
Replace only the bulbs listed (Y page 120).
Have the bulbs that you cannot change yourself
replaced at a qualified specialist workshop.
If you require assistance replacing bulbs, con-
sult a qualified specialist workshop.
If the new bulb still does not light up, consult a
qualified specialist workshop.
Headlamps and lights are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times. Have
the headlamp setting checked regularly.
Vehicles with LED headlamps: the front and
rear lamp clusters of your vehicle are equipped
with LED bulbs. Do not replace the bulbs your-
self. Contact a qualified specialist workshop
with the necessary specialist knowledge and
tools to carry out the work required. Replacing bulbs
119Lights and windscreen wipers Z

Overview of bulb types
You can replace the following bulbs. The details
for the bulb type can be found in the legend. Halogen headlamps
: Dipped-beam headlamp: H7 55 W
; Main-beam headlamp: H7 55 W
= Turn signal lamp: PWY 24 W Replacing front bulbs (vehicles with
halogen headlamps)
Dipped-beam headlamps X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anti-clockwise and
remove it.
X Turn bulb holder ;anti-clockwise and pull
out.
X Pull defective bulb out of bulb holder ;.
X Insert new bulb into bulb holder ;.
X Insert bulb holder ;and turn it clockwise.
X Press on housing cover :and turn it clock-
wise. . Main-beam headlamps
X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anti-clockwise and
remove it.
X Turn bulb holder ;anti-clockwise and pull
out.
X Pull defective bulb out of bulb holder ;.
X Insert new bulb into bulb holder ;.
X Insert bulb holder ;and turn it clockwise.
X Press on housing cover :and turn it clock-
wise.
Turn signals X
Remove the cover in the front wheel arch
(Y page 121).
X Turn housing cover :anti-clockwise and
remove it.
X Turn bulb holder ;anti-clockwise, unlock
and pull out.
X Pull defective bulb out of bulb holder ;.
X Insert new bulb into bulb holder ;.
X Insert bulb holder ;and turn it clockwise. 120
Replacing bulbsLights and windscreen wipers

X
Press on housing cover :, turn it to the right
and lock it.
X Replace the cover in the front wheel arch
(Y page 121).
Fitting/removing the cover on the front wheel arch You must remove the cover in the front wheel
arch before you can change the front turn signal
lamp. X
To remove: switch off the lights.
X Turn the front wheels inwards.
X Use a suitable object to turn rotary knob :
180° outwards until it stops.
Cover ;is released.
X Lift cover ;off.
X To fit:insert cover ;into the left, right and
two lower catches.
X Use a suitable object to turn rotary knob :
180° inwards until it stops.
Cover ;is locked. Windscreen wipers
Switching the windscreen wipers on/
off
! Do not operate the windscreen wipers when
the windscreen is dry, as this could damage
the wiper blades. Moreover, dust that has col-
lected on the windscreen can scratch the
glass if wiping takes place when the wind-
screen is dry.
If it is necessary to switch on the windscreen wipers in dry weather conditions, always
operate them using washer fluid. !
If the windscreen wipers leave smears on
the windscreen after the vehicle has been
washed in an automatic car wash, this may be
due to wax or other residue. Clean the wind-
screen with washer fluid after an automatic
car wash.
! Intermittent wiping with rain sensor: due to
optical influences and the windscreen becom-
ing dirty in dry weather conditions, the wind-
screen wipers may be activated inadvertently. This could damage the windscreen wiper
blades or scratch the windscreen.
For this reason, you should always switch off
the windscreen wipers in dry weather. 1
$ Windscreen wipers off
2 Ä Intermittent wiping, normal
3 Å Intermittent wiping, frequent
4 ° Continuous wipe, slow
5 ¯ Continuous wipe, fast
B í Single wipe
î Wipe with washer fluid
X Turn the key to position 1or 2in the ignition
lock (Y page 133).
X Turn the combination switch to the corre-
sponding position.
Vehicles with a rain sensor: in theÅor
Ä position, the appropriate wiping 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 windscreen wiper to wipe more fre-
quently.
If the wiper blades are worn, the windscreen will no longer be wiped properly. This could mean
you are unable to observe the traffic conditions. Windscreen wipers
121Lights and windscreen wipers Z

Replacing the wiper blades
Important safety notes G
WARNING
If the windscreen wipers begin to move while
you are changing the wiper blades, you can be trapped by the wiper arm. There is a risk of
injury.
Always switch off the windscreen wipers and
ignition before changing the wiper blades.
! Never open the bonnet if a windscreen
wiper arm has been folded away from the
windscreen.
Never fold a windscreen wiper arm without a
wiper blade back onto the windscreen.
Hold the windscreen wiper arm firmly when
you change the wiper blade. If you release the
windscreen wiper arm without a wiper blade
and it falls onto the windscreen, the wind-
screen 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 windscreen wiper
blades, make sure that you touch only the
wiper arm of the windscreen wiper.
Replacing the windscreen wiper blades Moving the wiper blades to the vertical
position
On vehicles without KEYLESS-GO or KEY-
LESS‑GO start function:
X Turn the key to position 1or 2in the ignition
lock (Y page 133).
X Set the windscreen wipers to the °posi-
tion on the combination switch.
X When the wiper arms have reached the verti-
cal position, turn the key to position 0in the
ignition lock and remove it.
X Fold the wiper arm away from the windscreen.
On vehicles with KEYLESS-GO or KEY-
LESS‑GO start function:
X Switch off the engine.
X Remove your foot from the brake pedal. X
Set the windscreen wipers to the °posi-
tion on the combination switch.
X Press the Start/Stop button repeatedly until
the windscreen wipers start.
X When the wiper arms have reached the verti-
cal position, press the Start/Stop button.
X Fold the wiper arm away from the windscreen.
Removing the wiper blades X
Hold 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.
X Slide the catch ;in the direction of arrow =
until it engages in the removal position with a noticeable click. X
Remove the wiper blade in the direction of
arrow ?away from the wiper arm. 122
Windscreen wipersLights and windscreen wipers

Fitting the wiper blades
X
Insert the new wiper blade into the wiper arm
in the direction of arrow :. X
Slide the catch ;in the direction of arrow =
until it engages in the locking position with a
noticeable click.
X Make sure that the wiper blade sits correctly.
X Fold the wiper arm back onto the windscreen. X
Remove the protective film :from the ser-
vice indicator on the tip of the wiper blade.
If the colour of the service indicator changes
from black to yellow, the wiper blades should be replaced.
i The duration of the colour change varies
depending on the usage conditions. Windscreen wipers
123Lights and windscreen wipers Z

Problems with the windscreen wipers
Problem
Possible causes/consequences and
M
MSolutions The windscreen wipers
are jammed. Leaves or snow, for example, are obstructing windscreen wiper move-
ment. The wiper motor has been deactivated.
X Switch off the engine.
X Remove the key from the ignition lock.
or, on vehicles with KEYLESS-GO or KEYLESS ‑GO start function:
X Open the driver's door.
The vehicle electronics now have status 0. This is the same as the
key having been removed.
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 a qualified 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 a qualified specialist workshop. 124
Windscreen wipersLights and windscreen wipers

Overview of climate control systems
General notes
The THERMATIC automatic climate control is
available with one or two climate control zones. As dual-zone automatic climate control, the
temperature can be regulated separately on the
driver's side and front-passenger side.
Observe the settings recommended on the fol-
lowing pages. Otherwise, the windows could
mist up.
To prevent the windows from misting up:
R switch off climate control only briefly
R activate air-recirculation mode only briefly
R switch on "Cooling with dehumidification"
R activate the "Windscreen demisting" 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 dehumidification" function is
available only when the engine is running. Opti- mum climate control is achieved only with the
side windows and roof closed.
The integrated filter filters out most particles of
dust and soot and completely filters out pollen.
It also reduces gaseous pollutants and odours. A
clogged filter reduces the amount of air supplied to the vehicle interior. For this reason, you
should always observe the interval for replacing
the filter, which is specified in the Service Book-
let. As this depends on environmental condi-
tions, e.g. heavy air pollution, the interval may
be shorter than stated in the Service Booklet.
i Ventilate the vehicle for a brief period during
warm weather, e.g. using the convenience
opening feature (Y page 95). This will speed
up the cooling process and the desired inte-
rior temperature will be reached more
quickly.
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. Control panel for THERMATIC automatic climate control
Control panel for THERMATIC automatic climate control (example)
: To set the temperature, left (Y page 128)
; To set the air distribution (Y page 128)
= To set the airflow (Y page 128)
To switch climate control off (Y page 126)
? To set climate control to automatic mode (Y page 127) Overview of climate control systems
125Climate control

A
To demist the windscreen (Y page 128)
B To call up the climate control menu of the multimedia system (Y page 288)
C To switch the rear window heating on/off (Y page 129)
D To activate/deactivate synchronisation (Y page 128)
E To activate/deactivate air-recirculation mode manually (Y page 129)
F To activate/deactivate cooling with dehumidification (Y page 127)
G To set the temperature, right (Y page 128)Notes on using automatic climate
control
Optimum use of automatic climate con-
trol The following contains notes and recommenda-
tions on how best to use THERMATIC automatic
climate control.
R Activate 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.
R Set the temperature to 22 †.
R Use the "Windscreen demisting" function only
briefly until the windscreen is clear again.
R Use the "Air-recirculation mode" function only
briefly, e.g. if there are unpleasant outside
odours or when in a tunnel. The windows
could otherwise mist up as no fresh air is
drawn into the vehicle in air-recirculation
mode.
DYNAMIC SELECT switch (except
Mercedes-AMG vehicles) You can choose between various drive programs
with the DYNAMIC SELECT switch:
R manual transmission (Y page 141)
R automatic transmission (Y page 141)
If you have selected drive program E:
R during heating, the electrical heater booster
is deactivated and heat output is reduced as a
result
R the rear window heating 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 operates only at a reduced capacity. If
you require the full climate control output, you
can switch off the ECO start/stop function by
pressing the ECO button (Y page 139). Operating the climate control system
Switching the climate control on/off
General notes When climate control is switched off, the air
supply and air circulation are also switched off.
The windows could mist up. Therefore, switch
off climate control only briefly.
Switch on climate control primarily using the
à rocker switch (Y page 127).
Activating/deactivating X
Turn the key to position 2in the ignition lock
(Y page 133).
X To switch on: set the airflow to level 1or
higher using the Hrocker switch.
X To switch off: set the airflow to level 0using
the H rocker switch. 126
Operating the climate control systemClimate control

Activating/deactivating cooling with air dehumidification
General notes If you deactivate the "Cooling with dehumidification" function, the air inside the vehicle will not be
cooled during warm weather. The air inside the vehicle will also not be dehumidified. The windows
can mist up more quickly. Therefore, deactivate the "Cooling with dehumidification" function only
briefly.
The "Cooling with dehumidification" function is available only when the engine is running. The air
inside the vehicle is cooled and dehumidified according to the temperature selected.
Condensation may drip from the underside of the vehicle when cooling mode is active. This is normal
and not a sign that there is a malfunction.
Activating/deactivating X
Press rocker switch ¿up or down.
The indicator lamp above the rocker switch lights up or goes out.
Problems with the "Cooling with dehumidification" function Problem
Possible causes/consequences and
M MSolutions The indicator lamp above
rocker switch
¿ remains off. The
"Cooling with dehumidi-
fication" function can no
longer be activated via
the multimedia system
(Y page 289). The cooling with dehumidification function has been deactivated due
to a malfunction.
X Consult a qualified specialist workshop. Setting climate control to automatic
mode
General notes In automatic mode, the set temperature is main-
tained automatically at a constant level. The
system automatically regulates the temperature of the dispensed air, the airflow and the air dis- tribution.
During automatic controlling, the "Cooling with
air dehumidification" function is activated.
The system automatically detects whether the
soft top is open or closed and automatically
adjusts the air settings depending on the soft
top status. Automatic control X
Turn the key to position 2in the ignition lock
(Y page 133).
X To activate: press theÃrocker switch up
or down.
The indicator lamp above the Ãrocker
switch lights up.
X Set the desired temperature using the w
rocker switch on the front control unit.
X To switch to manual operation: press the
H rocker switch up or down.
or
X Press the _rocker switch up or down.
The indicator lamp above the Ãrocker
switch goes out.
In automatic mode, if you adjust the airflow or
air distribution manually, the indicator lamp
above the Ãrocker switch goes out. The
function that has not been changed manually,
however, continues to be controlled automati- Operating the climate control system
127Climate control