MERCEDES-BENZ S-Class CABRIOLET 2017 A217 Owner's Manual

=High-beam flasher
?Turn signal, left
XTo indicate briefly:press the combination
switch briefly to the pressure point in direc-
tion of arrow ;or?.
The corresponding turn signal flashes three
times.
XTo indicate: press the combination switch
beyond the pressure point in 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
Plus:
If Adaptive Highbeam Assist Plus is activated, it
automatically controls activation and deactiva-
tion of the high-beam headlamps (
Ypage 109).
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 Plus
General notes
With Adaptive Highbeam Assist Plus, you can
automatically switch between low-beam, partial
high-beam and high-beam headlamps.
Partial high-beam is a form of illumination
whereby the high-beam is directed past other
road users. Other road users are kept out of the
high-beam. This prevents glare. When there is a
vehicle in front, for example, the high-beam
headlamps illuminate the areas to its right and
left. The vehicle in front is illuminated by the low-
beam headlamps.
The system automatically adapts the low-beam
headlamp range depending on the distance to
the other vehicle. Once the system no longer
Exterior lighting109
Lights and windshield wipers
Z

detects any other vehicles, it reactivates the
high-beam headlamps.
If the reflected light from the high-beam head-
lamps or partial high-beam headlamps from traf-
fic signs is too strong, the lights are automati-
cally dimmed. Glare for the driver caused by the
reflections is thus avoided.
The system's optical sensor is located behind
the windshield near the overhead control panel.
Important safety notes
GWARNING
Adaptive Highbeam Assist Plus does not react
to road users:
Rwho have no lights, e.g. pedestrians
Rwho have poor lighting, e.g. cyclists
Rwhose lighting is blocked, e.g. by a barrier
In very rare cases, Adaptive Highbeam Assist
Plus may not react to road users who do have
lights, or may recognize them too late. In this,
or in similar situations, the automatic high-
beam headlamps will not be deactivated or
will be activated regardless. There is a risk of
an accident.
Always carefully observe the traffic conditions
and switch off the high-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 if:
Rthere is poor visibility, e.g. due to fog, heavy
rain or snow
Rthere is dirt on the sensors or anything else
covering the sensors
Switching Adaptive Highbeam Assist
Plus on/off
XTo switch on: turn the light switch to the
à position.
XPress the combination switch forwards
beyond the pressure point (Ypage 108).
The _ indicator lamp on the multifunction
display lights up when it is dark and the light
sensor switches on the low-beam headlamps.
If you are driving at speeds above approx-
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 other road users are detected, the partial
high-beam headlamps are automatically
switched on.
If you are driving at speeds below approx-
imately 16 mph (25 km/h) or the roads are
adequately illuminated:
The partial high-beam or high-beam head-
lamps are switched off automatically. The
K indicator lamp on the instrument cluster
goes out. The _indicator 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 _ indicator lamp on the multifunction
display 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.
110Exterior lighting
Lights and windshield wipers

Interior lighting
Overview of interior lighting
Front overhead control panel
:p Left-han dfron treading lamp
;u Rear interio rlighting
=p Right-hand fron treading lamp
?| Automatic interio rlighting control
Ac Interio rlighting
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 2in
th eignition lock.
The color ,brightness, zone and display ligh tfor
th eambien tlighting are set usin gth emultime-
dia system; see th eDigital Operator's Manual.
The interio rlighting control can be operate d
usin gth efron toverhead control panel.
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 rligh tis activated for ashort while
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).
Manual interior lighting control
XTo switch th einterior lighting on or off :
press th ec button.
XTo switch th erea rcompartmen tinterior
lighting on/off: press theu button.
XTo switch th ereadin glam pon or off :press
th ep button.
Replacing bulbs
The fron tand rear ligh tclusters of your vehicl e
are equipped wit hLE Dligh tbulbs .Do no t
replace th eLE Dligh tsource sof your vehicl e
yourself .Contac t aqualified specialist work-
sho pwhic hhas th enecessar yspecialist knowl-
edge and tools to carry out th ewor krequired.
Lamps are an important aspect of vehicl esafety.
You must therefor emak esur ethat these func-
tion correctl yat all times .Hav eth eheadlamp
setting checke dregularly.
Windshield wipers
Switching the windshield wipers
on/off
!
Do no toperate th ewindshield wiper swhen
th ewindshield is dry, as this could damag e
th ewiper blades. Moreover, dust that has col-
lecte don th ewindshield can scratch th eglass
if wipin gtakes plac ewhen th ewindshield is
dry.
If it is necessar yto switch on th ewindshield
wiper sin dry weather conditions, always use
washe rfluid when operating th ewindshield
wipers.
!If th ewindshield wiper sleav esmears on th e
windshield after th evehicl ehas been washe d
in an automatic car wash, wax or other resi-
dues may be th ereason for this. Clean th e
windshield usin gwashe rfluid after washing
th evehicl ein an automatic car wash.
!Intermittent wipin gwit hrain sensor :due to
optical influence sand th ewindshield becom-
ing dirt yin dry weather conditions, th ewind-
Windshield wipers111
Lights and windshield wipers
Z

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 wiping, normal
3ÅIntermittent wiping, 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.
In the ÅorÄ position, the appropriate
wiping frequency is set automatically according
to the intensity of the rain. In the Åposition,
the rain sensor is more sensitive than in the
Ä position, causing the windshield wiper to
wipe more frequently.
The washer fluid is fed through the wiper blades;
when the screen is wiped with washer fluid
î, the water is emitted directly from the
blades.
If you push and hold the combination switch
beyond the point of resistance in direction of
arrow B, the manual wash program is activa-
ted. If you push and hold the combination switch
briefly beyond the point of resistance in direc-
tion of arrow B, the automatic wash program is
activated.
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.
!To avoid damaging the wiper blades, make
sure that you touch only the wiper arm of the
wiper.
!Never open the hood if a windshield wiper
arm has been folded away from the wind-
shield.
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.
!Always position the windshield wiper arms
vertically before folding them away from the
windshield. By doing so, you will avoid dam-
age to the hood.
Replacing the wiper blades
Moving the wiper arms to a vertical posi-
tion
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.
112Windshield wipers
Lights and windshield wipers

Removing the wiper blades
XTo bring the wiper blade into the removal
position:hold onto the wiper arm with one
hand. With the other hand, turn the wiper
blade in the direction of arrow :beyond the
point of resistance.
The wiper blade engages in the removal posi-
tion with an audible click.
XTo remove a wiper blade: firmly press
release knob ;and pull the wiper blade
upwards =.
Installing the wiper blades
XPush the new wiper blade in the direction of
arrow:onto the wiper arm until tab ;
engages.
XPush the wiper blade out of the removal posi- tion in the direction of arrow =beyond the
point of resistance.
The wiper blade disengages with an audible
click and is freely movable again.
XMake sure that the wiper blade is seated cor-
rectly.
XFold the wiper arm back onto the windshield.
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.
XOpen the driver's door.
The vehicle electronics now have status 0. This is the same as the
SmartKey having been 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.
Windshield wipers113
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
Rswitch on the defrost windshield function
briefly, if required
Climate control regulates the temperature and
air humidity in the vehicle interior. The air filter
cleans the air, thus improving the interior cli-
mate.
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 126).
The residual heat function can only be activated
or deactivated with the ignition switched off
(
Ypage 120).
To enable the air conditioning, pollutant moni-
toring and air filtering systems to function cor-
rectly, an interior filter must be used at all times. Ensure that the filter is properly installed and that the filter housing in the engine compart-
ment is correctly and tightly sealed by the cover
at all times during operation. Use filters that
have been recommended and approved by
Mercedes-Benz. Always have service work car-
ried out at a qualified specialist workshop.
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.
iWhen the weather is warm, ventilate the
vehicle for a brief period. This will speed up
the cooling process and the desired interior
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. In vehi- cles with the KEYLESS-GO or KEYLESS-GO
start function, the blower can switch on auto-
matically after the engine has been switched
off and the door opened. The vehicle is then
ventilated for 30 minutes to dry the automatic
climate control.
114Overview of climate control systems
Climate control

Automa tic climate control panel
Example: automatic climat econtrol panel
:Sets climat econtrol to automatic, lef t (Ypage 117)
;Sets thetemperature, lef t (Ypage 117)
=Sets theairflow, lef t (Ypage 118)
?Activates/deactivates air-recirculation mod e (Ypage 119)
ADefroststh ewindshield (Ypage 118)
BCalls up theclimat econtrol men uof th emultimedia system (Ypage 248)
CSwitches therear window defroste ron/off (Ypage 119)
DSwitches coolin gwit hair dehumidification on/off (Ypage 116)
Switches th eresidual heat on/off (
Ypage 120)
ESets theairflow, right (Ypage 118)
FSets thetemperature, right (Ypage 117)
GSets climatecontrol to automatic, right (Ypage 117)
Optimum use ofautomatic climate
control
Climate control system
Below, you can fin d anumber of note sand rec -
ommendation sto help you use climat econtrol
optimally.
RActivat eclimat econtrol usin gth eÃ
rocke rswitch .The indicator lamp in th eÃ
rocke rswitch lights up. The "Cooling wit hair
dehumidification "function is activated in
automatic mode.
RSe tth etemperature to 72 ‡(22 †).
ROnly use th e"Windshield defrosting "function
briefl yuntil th ewindshield is clear again .
ROnly use air-recirculation mod ebriefly, e.g. if
there are unpleasant outside odor sor when in
a tunnel. The windows could otherwise fog up,
since no fresh air is draw nint oth evehicl ein
air-recirculation mode.
RUse th eresidual heat function if you want to
heat or ventilat eth evehicl einterior when th e
ignition is switched off .The residual heat
function can only be activated or deactivated
wit hth eignition switched off .The residual
heat function is switched off when th eignition
is switched on .
ECO start/stop function
During automatic engin eswitch-off ,th eclimat e
control system only operate sat areduce dcapa-
city. If you require th efull climat econtrol output ,
Overview of climate control systems115
Climate control

you can switch off theECO start/sto pfunction
by pressing th eECO butto n (Ypage 129).
Operating the climate contro l sys-
tems
Activating/deactivating climate con-
tr ol
Gene ral notes
Whe nth eclimat econtrol is switched off ,th eair
supply and air circulation are also switched off .
The windows could fog up. Therefore ,switch off
climat econtrol only briefl y
Switc hon climat econtrol primarily usin gth e
à rockerswitch (
Ypage 117).
Activating/deactivating
XTurn theSmartKey to position 2in th eignition
loc k (Ypage 124).
XTo activate: set theairflow to level 1or higher
usin gth eK rockerswitch .
XTo deactivate: set theairflow to level 0usin g
th eK rockerswitch .
Switching cooling with air dehumidi-
ficationon/off
Gene ral notes
If you deactivat eth e"Coolin gwit hair-dehumid -
ification "function ,th eair inside th evehicl ewill no
tbe cooled .The air inside th evehicl ewill also
no tbe dehumidified. The windows can fog up
mor equickly. Therefore ,only deactivat eth e
"Coolin gwit hair-dehumidification "function
briefly.
The "Coolin gwit hair dehumidification "function
is only available when th eengin eis running .The
air inside th evehicl eis cooled and dehumidifie d
accordin gto th etemperature selected.
Condensation may dri pfrom th eunderside of
th evehicl ewhen it is in coolin gmode. This is
normal and no t asign that there is amalfunc -
tion .
Acti vating/deactivating
XTo activate: press theÁ rockerswitch up
or down .
The indicato rlamp abov eth erocke rswitch
lights up.
XTo switch off :press th eÁ rockerswitch
up or down .
The indicato rlamp abov eth erocke rswitch
goe sout .
Problems with the "Cooling with air dehumidification" function
ProblemPossible causes/consequences and MSolutions
The indicatorlamp in th e
Á buttonflashes
three times or remain s
off .Cooling wit hair
dehumidification can
also no longer be activa-
te dusin gth emultimedia
system; see th eDigital
Operator' sManual.Cooling wit hair dehumidification has been deactivated due to amal-
function .
XVisitaqualified specialist workshop .
116Operating the climate control systems
Climate control

Setting climate control to automatic
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.
Setting climate control to automatic
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XSet the desired temperature using the w
rocker switch.
XTo activate: press theÃrocker switch up
or down.
The indicator lamp in the Ãrocker switch
lights up.
XTo switch to manual operation: press the
K rocker switch up or down.
The indicator lamp in the Ãrocker switch
goes out.
In automatic mode, if you adjust the airflow or
air distribution manually, the indicator lamp on
the à rocker switch goes out. The function
which has not been changed manually, however,
continues to be controlled automatically. When
the manually set function switches back to auto-
matic mode, the indicator lamp on the Ã
rocker switch lights up again.
Adjusting the climate mode settings
In automatic mode you can select the following
airflow settings for the driver's and front-
passenger areas:
FOCUS high airflow, slightly cooler setting
MEDIUM medium airflow, standard setting
DIFFUSE low airflow, slightly warmer and draft- free setting
XTo set:set the climate mode using the mul-
timedia system (Ypage 248).
Setting the temperature
General notes
You can set the temperature separately for the
following areas:
Rfront footwells, left and right
Rdriver and front passenger area
Setting the temperature
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XTo increase or reduce: press thew
rocker switch up or down.
XOnly change the temperature setting in small
increments. Start at 72 ‡ (22 †).
Setting the footwell temperature
The footwell temperature for the driver and front
passenger can be set separately using the mul-
timedia system (see the Digital Operator's Man-
ual).
Setting the air distribution
Air distribution settings
¯ Directs air through the defroster vents
P Directs air through the center and side air
vents
O Directs air through the footwell air vents
S Directs air through the center, side and
footwell vents
a Directs air through the defroster and
footwell vents
W Sets the air distribution to automatic
Operating the climate control systems117
Climate control

Setting the air distribution via the mul-
timedia system
The air distribution for the left and right sides of
the driver's and front-passenger areas can be
adjusted using the multimedia system (see the
Digital Operator's Manual).
Setting the airflow
General notes
You can select different airflow settings for the
driver's and front-passenger sides.
Setting the airflow
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XTo increase or reduce: press theK
rocker switch up or down.
iYou can also set the airflow using the mul-
timedia system (see the Digital Operator's
Manual).
Activating or deactivating the syn-
chronization function
Climate control can be set centrally using the
synchronization function. The settings for tem-
perature, air distribution and airflow on the driv-
er's side are adopted for the front-passenger
side.
XTo activate or deactivate: activate or deac-
tivate the "Synchronization" function via the
multimedia system (see the Digital Operator's
Manual).
The synchronization function deactivates if the
settings for the front-passenger side are
changed.
Defrosting the windshield
General notes
You can use this function to defrost the wind-
shield or to clear a fogged up windshield or front
side windows on the inside.
Switch off the "Windshield defrosting" function
as soon as the windshield is clear again.
Switching the "Windshield defrosting"
function on or off
XTurn the SmartKey to position 2in the ignition
lock (Ypage 124).
XTo activate: press the¬rocker switch on
the front control panel up or down.
The indicator lamp in the ¬rocker switch
lights up.
The climate control system switches to the
following functions:
Rhigh airflow
Rhigh temperature
Rair distribution to the windshield and front
side windows
Rair-recirculation mode off
Rwindshield heating on
Rcooling with air dehumidification on
XTo deactivate: press the¬rocker switch
up or down.
The indicator lamp in the ¬rocker switch
goes out. The previously selected settings are restored. Air-recirculation mode remains
deactivated.
Defrosting the windows
Windows fogged up on the inside
XActivate the "Cooling with air dehumidifica-
tion" function with the Árocker switch.
or
XActivate the "Cooling with air dehumidifica-
tion" function via the multimedia system; see
the Digital Operator's Manual.
XSwitch on automatic mode using the Ã
rocker switch.
XIf the windows continue to fog up: activate the
"Windshield defrosting" function using the
¬ rocker switch. The windshield heating is
switched on.
iYou should only select this setting until the
windshield is clear again.
Windows fogged up on the outside
XActivate the windshield wipers.
XSwitch on automatic mode using the Ã
rocker switch.
118Operating the climate control systems
Climate control