air condition MERCEDES-BENZ S-CLASS CABRIOLET 2018 Owner's Manual

&WARNING Risk offire due toflammable
materials on hot parts of theex haust
sy stem
Flammable material such as lea ves, grass or
twigs may ignite if they come into contact
wi th hot parts of theex haust sy stem.
#When driving on unpa vedro ads or off-
ro ad, regular lych eck theve hicle under‐
side.
#Re mo vetrapped plants or other flam‐
mable material.
#If th ere is damage, consult a qualified
specialist workshop immediately.
* NO
TEDama getotheve hicle
In thefo llowing situations, in particular, there
is a risk of damage totheve hicle:
RThe vehicle becomes grounded, e.g. on a
high curb or an unpa vedro ad.
RThe vehicle is driven toofast over an
obs tacle, e.g. a curb, speed bump or pot‐
hole.
RA heavy object strike sth e underbody or
ch assis components.
In situations such as this, the body, the
underbody, chassis components, wheels or
tires could be damaged without the damage
being visible. Components damaged in this
wa ycan unexpec tedly fail or, in the case of
an accident, may not absorb the loads that
arise as intended.
If th e underbody paneling is damaged, flam‐
mable materials such as lea ves, grass or
twigs can collect between the underbody and
th e underbody paneling. These materials may
ignite if they come into contact wi thhot
parts on theex haust sy stem.
#Ha ve theve hicle checked and repaired
immediately at a qualified specialist
wo rkshop.
or
#If driving saf etyis impaired while con‐
tinuing your journe y,pull over and stop
th eve hicle immediately in accordance
with the traf fic conditions, and contact
a qu alified specialist workshop.
Declaration of conformity for wi reless vehi‐
cle co mponents
USA: "The wireless devices of this vehicle com‐
ply with Part15 ofthe FCC Rules. Operation is
subject tothefo llowing two conditions: 1) These
devices may not cause harmful inter fere nce, and
2) These devices must accept any interfere nce
re ceive d, including inter fere nce that may cause
undesired operation. Change s or modifications
not expressly appr ovedby the party responsible
fo r compliance could void the user's authority to
operate the equipment."
Canada: "The wireless devices of this vehicle
comply with Industry Canada license-e xemp t
RSS standard(s). Operation is subject tothefo l‐
lowing two conditions: (1) These devices may
not cause inter fere nce, and (2) These devices
General no tes 25

Ingeneral, this information documents thest ate
of a component part, a module, a sy stem or the
sur roundings such as:
Roperating statuses of sy stem components
(e.g. fluid leve ls, battery status, tire pressure)
Rstatus messages concerning theve hicle and
its individual components (e.g. number of
wheel revo lutions/speed, decele ration, lat‐
eral acceleration, display of thefast ened seat
belts)
Rmalfunctions or defects in impor tant sy stem
components (e.g. lights, brakes)
Rinformation on vehicle damage events
Rsystem reactions in special driving situations
(e.g. airbag deployment, inter vention of sta‐
bility control sy stems)
Rambient conditions (e.g. temp erature, rain
sensor)
In addition toprov iding the actual control unit
function, this data assists the manufacturer in
de tecting and rectifying malfunctions and opti‐
mizing vehicle functions. The majority of this
data is temp orary and is only processed in the ve
hicle itself. Only a small portion of the data is
st ored in theev ent or malfunction memor y.
When service workis done on your vehicle, the
te ch nical da tafrom theve hicle can be read out
by service network staff (e.g. workshops, manu‐
fa cturer) or third parties (e.g. breakdown serv‐
ices). Services include repair services, mainte‐
nance processes, warranty events a
nd
quality
assurance measures, forex ample. The read out
is per form ed via the legally prescribed port for
th e diagnostics connection in theve hicle. The
re spective service network locations or third
parties collect, process and use the data. They
document tech nical statuses of theve hicle,
assist in finding malfunctions and impr oving
qu ality and are transmitted tothe manufacturer,
if necessar y.Fu rthermore, the manufacturer is
subject toproduct liability. Forth is, the manu‐
fa cturer requirestech nical da tafrom vehicles.
Malfunction memories in theve hicle can be
re set bya service outlet as part of repair or
maintenance work.
They can enter data into theve hicle's comfort
and inf otainment functions themselves as part
of the selected equipment. These include:
Rmultimedia data such as music,
films or pho‐
to sfo r playba ckin an integrated multimedia
sy stem
Raddress book data for use in connection with
an integrated hands-free sy stem or an inte‐
grated navigation sy stem
Rentered navigation destinations
Rdata about the use of Internet services
This data can be sa ved locally in theve hicle or it
is located on a device which you ha veconnected
to theve hicle (e.g. smartphone, USB flash drive
or MP3 pla yer). If this data is stored in theve hi‐
cle, you c
an dele
teit at any time. This data can
only be transmitte dto third parties upon your
re qu est with particular rega rd tothe scope of
use of online services according toyour selected
settings.
Yo u can store or change con venience settings/
individualization in theve hicle at any time.
Depending on the equipment, this includes, for
ex ample:
Rseat and steering wheel position settings
General no tes 29

andthe location of theve hicle may be compiled
th ro ugh COMAND or the mbrace sy stem.
Fo r additional information please referto the
ch ap ter Multimedia sy stem and/or the mbrace
Te rm s and Conditions.
Event Data Recorders
This vehicle is equipped with an event data
re corder (EDR). The main purp ose of an EDR is
to record, in cer tain crash or near crash-like sit‐
uations, such as an air bag deployment or hitting
a ro ad obs tacle, data that will assist in under‐
st anding how a vehicle's sy stems per form ed.
The EDR is designed torecord data related to
ve hicle dynamics and saf etysy stems for a short
period of time, typically 30 seconds or less.
The EDR in this vehicle is designed torecord
such data as:
RHowvarious sy stems in your vehicle were
operating
RWhe ther or not the driver and front
passenger seat belts werebuckled/fas tened
RHow far (if at all) the driver was depressing
th e accelera tor and/or brake pedal and
RHow fasttheve hicle was tr aveling.
This data can help pr ovide a better under stand‐
ing of the circums tances in which accidents and
inju ries occur. NOTE: EDR data is recorded by
yo ur vehicle only if a non-trivial crash situation
occurs; no data is recorded bythe EDR under
normal driving conditions and no personal data
(e.g. name, gende r,age and crash location) is
re corded. Ho wever,ot her parties, such as law
enforcement, could combine the EDR data with
th e type of personally identifying data routinely
acquired during a crash in vestigation.
Ac cess tothe
ve hicle and/or the E
DR is needed
to read data that is recorded byan EDR, and
special equipment is required. In addition tothe
ve hicle manufacturer, other parties that ha vethe
special equipment, such as law enforcement,
can read the information byaccessing theve hi‐
cle or the EDR.
EDR data may be used in civil and criminal mat‐
te rs as a tool in accident reconstruction, acci‐
dent claims and vehicle saf ety. Since the Crash Data
Retrie val (CDR) tool that is used toextract
da ta from the EDR is commercially available,
Mercedes-Benz US A,LLC ("MBUSA") expressly
disclaims any and all liability arising from the
ex traction of this information byunauthorized
Mercedes-Benz personnel.
MBUSA willnot share EDR data with others with‐
out the consent of theve hicle owner or, if the
ve hicle is leased, without the consent of the les‐
see. Exceptions tothis representation include
re sponses tosubpoenas bylaw enforcement; by
fe deral, state or local go vernment; in connection
with or arising out of litigation in volvin g MBUSA
or its subsidiari es and affiliates; or, as requ ired
by law.
Wa rning: the EDR is a component of the
Re stra int Sy stem Module. Tamp ering with, alter‐
ing, modifying or removing the EDR component
may result in a malfunction of theRe
stra in
t Sys‐
te m Module and other sy stems.
St ate la wsorregulations rega rding EDRs that
con flict with federal regulation are pre-em pted.
This means that in theeve nt of such conflict,the
fe deral regulation go verns. As of February 20 13,
13 states ha veenacted la wsrelating toEDRs.
General no tes 31

The components of there stra int sy stem can
be activated or deplo yed independently of
each other:
Component De tected deploy‐
ment situation
Emer gency Tension‐
ing Devices Fr
ontal impact, rear
impact, side impact,
ro llo ver
Driver's airbag, front
passenger airbag Fr
ontal impact
Knee airbag Frontal impact
Side impact airbag Side impact
Wi ndow airba gS ide impact,rollo ver,
frontal impact
The front passenger airbag can only be deploy ed
in an accident if thePA SSENGER AIR BAG OFF
indicator lamp is off. If the front passenger seat
is occupied, make sure, bo thbefore and during
th e journe y,that thest atus of the front
passenger airbag is cor rect (
→page 45)
(→page 45).
& WARNING Risk of burn s from hot air bag
components
The air bag parts are hot af ter an air bag has
been deploy ed.
#Do nottouch the air bag parts.
#Ha ve a deplo yed air bag replaced at a
qu alified specialist workshop as soon
as possible.
Mercedes-Benz recommends that you ha vethe
ve hicle towe dto aqu alified specialist workshop
af te r an accident. Take this into account, partic‐
ularly if an Emer gency Tensioning Device is trig‐
ge red or an airbag deplo yed.
If th e Emer gency Tensioning Devices are trig‐
ge red or an airbag is deplo yed, youwill hear a
bang, and a small amount of powder may also be
re leased:
RThe bang will not generally af fect your hear‐
ing.
RIn general, the powder released is not haz‐
ardous tohealth but may cause short-term breathing dif
ficulties topersons suf fering
from as thma or other pulmonary conditions.
Pr ov ided it is safe todo so, lea vetheve hicle
immediately or open the window in order to
pr eve nt brea thing dif ficulties.
Airbags and pyrotech nic Emergency Tensioning
Devices contain pe rchlorate material, which may
re qu ire special handling or environmental pro‐
te ction measure s.Na tional guidelines rega rding
wa ste disposal must be obser ved. In California,
see http://www.dtsc.ca.gov/HazardousWas te/
Pe rchlorate/index.cfm.
Seat belts
Pr otection pr ovided bythe seat belt
Alw aysfast enyour seat belt co rrectly before
st arting a journe y.A seat belt can only pr ovide
th e best le vel of pr otection if it is worncor rectl y.
Occupant saf ety 35

Thechild cannot be restra ined in theeve nt of
an accident, heavy braking or a sudden
ch ange of direction.
#Alw aysre place child restra int sy stems
immediately that ha vebeen damaged or
in vo lved in an accident.
#Ha ve the securing sy stems forth ech ild
re stra int sy stems checked at a qualified
specialist workshop before ins talling a
ch ild restra int sy stem again.
A boos ter seat may be necessary toachie ve
proper seat belt positioning forch ildren over
40 lbs (18 kg) in weight or until they reach a
height where a thre e-point seat belt can be
ins talled proper lywithout a boos ter seat.
The following no tes must be obser ved:
RWhen ins talling a child restra int sy stem on
th e front passenger seat, the information on
ins talling a child restra int sy stem on the front
passenger seat (
→page 55).
RInstructions and saf etyno tes on the auto‐
matic front passenger front airbag shutoff
(
→page 43).
RSaf etyno tes on the seat belt (→page 35).
RInformation on the cor rect use of the seat
belt (→page 39).
Ac tivating/deactivating the child seat saf ety
fe ature of the seat belt
&
WARNING Risk of injury or death if a
seat belt is unfas tened while theve hicle
is in motion
If th e seat belt is released while theve hicle is
in motion, thech ild restra int sy stem is no
longer cor rectly secure d. Thechild seat
saf etyfe ature is deactivated and the seat
belt is dr awn in a bit bythe inertia reel.
It is therefore not possible toengage the seat
belt again.
#Pull over and stop theve hicle safely as
soon as possible, paying attention to
ro ad and traf fic conditions.
#Ac tivate thech ild seat saf etyfe ature
again and cor rectly secure thech ild
re stra int sy stem.
When enabled, thech ild seat saf etyfe ature
ensures that the seat belts of the front
passenger seat and rear seats do not slac ken
once thech ild restra int sy stem is secured.
Installing a child restra int sy stem:
#Alw ays comply with the manufacturer's
ins tallation instructions when ins talling and
re moving thech ild restra int sy stem.
#Pull the seat belt smoo thly from the seat belt
outlet.
#En gage the seat belt tongue in the seat belt
buckle.
Ac tivating the child seat saf etyfe ature:
#Pull the seat belt out fully and let the inertia
re el retract it again.
When thech ild seat saf etyfe ature is activa‐
te d,you should hear a ratcheting sound.
#Push thech ild restra int sy stem down until
th e seat belt sits tightly.
Deactivating the child seat saf etyfe ature:
#Press there lease button of the seat belt
buckle.
Occupant saf ety 51

Cornering light
Cornering light function
Cornering light improvesth e illumination of the
ro adw ayove r a wide angle in the turning direc‐
tion, enabling better visibility on tight bends, for
ex ample. It can only be activated whenthe low
beam is switched on.
The function is active:
RAt speeds below 25 mph (40 km/h) when
th e turn signal light is switched on or the
st eering wheel is turned.
RAt speeds between 25 mph (40 km/h) and
45 mph (70 km/h) when thesteering wheel
is turned.
Ad aptive Highbeam Assist
Function of Adaptive Highbeam Assist
&
WARNING Risk of accident despite
Ad aptive Highbeam Assist
Ad aptive Highbeam Assist does not recog‐
nize thefo llowing road users:
RRo ad users without lights, e.g. pedes‐
trians
RRo ad users with poor lighting, e.g.
cyclists
RRo ad users whose lighting is obstructed,
e.g. bya bar rier
On very rare occasions, Adaptive Highbeam
Assist may failto recognize other road users
with their own lighting, or may recognize
th em too late.
In these or similar situations, the automatic
high beam is not deactivated or is activated
despite the presence of other road users.
#Alw ays obser vethe tra ffic carefully and
switch off the high beam in good time.
Sy stem limitations
Ad aptive Highbeam Assist cannot take into
account road, weather or traf fic conditions.
De tection may be restricted if:
RVi sibility is impaired, forex ample in fog,
heavy rain or sno w.
RThere is dirt on the sensors or the sensors
are obscured.
Ad aptive Highbeam Assist is only an aid.You are
re sponsible for adju sting theve hicle's lighting to
th e pr evailing light, visibility and traf fic condi‐
tions.
Light and visibility 111

vehicle is unloc ked. When youstart theve hicle,
th e sur round lighting is switched off and auto‐
matic driving lights are activated.
Interior lighting
Ad justing the in terior lighting
#1 p Switches the front left-hand reading
lamp on/off
#2 | Switches the automatic interior
lighting control on/off
#3 c Switches the front interior lighting
on/off
#4 u Switches there ar interior lighting
on/off
#5 p Switches the front right-hand read‐
ing lamp on/off
Ad justing the ambient lighting
Multimedia sy stem:
,Vehicle.÷ Light Settings.Ambi-
ent Light
Setting the color
#Select Color.
#Set a colo r.
Ad justing the brightness
#Select Brightness .
#Set a brightness value.
Ac tivating the brightness for zones
#Select Brightness Zones .
#Activate Oor deacti vate ª the function.
The Display ,Front andRear zones can be set
separately. %
Setting brightness zones is not available for
th eRe ar Seat En tertainment Sy stem.
Ac tivating multi-color lighting
#Select Multi-color.
#Activate Oor deacti vate ª the function.
There are ten preset color combinations
av ailable.
Ac tivating multi-color animation
#Select Multi-color Animation.
#Activate Oor deacti vate ª the function.
The chosen color combination changes at
predefined inter vals.
Ac tivating dependency on air conditioning
settings
#Select Climate .
#Activate or deacti vate the function.
If ch anges are made tothete mp erature set‐
ting in theve hicle, the color of the ambient
lighting changes brief ly.
Ac tivating welcome lighting
#Select Welcome.
Light and visibility 11
3

Overview of climate control systems
Overview of the operating unit for automatic
climate control
The indica tor lamps in the buttons indicate that
th e cur rent function is acti vated.
1Ã Sets climate control toautomatic, left
(→page 122)
2w Setsthete mp erature, left
3K Setsthe air flow , left
4g Switches air-recirculation mode on/off
(→page 123)
5¬ Demists the windshield
6t Calls up the air conditioning menu
7¤ Switches there ar wind owheater
on/off
8Á Switches the A/C function on/off
(→page 121)
Switches there sidual heat on/off
(
→page 123)
9K Setsthe air flow ,ri ght
Aw Setsthete mp erature, right
BÃ Sets climate contro lto automatic, right
Operating the clima tecontro l system
Ac tivating/deactivating climate control
#To switch on: setthe air flow toleve l 1 or
higher using theK button.
#Toswitch off: setthe air flow toleve l 0 using
th eK button.
% If climate control is switched off, the win‐
do ws may mist up more quickl y.Switch off
climate control only brie fly.
Ac tivating/deactivating the A/C function via
the control panel
The A/C function heats, cools and dehumidifies
th eve hicle's interior air.
#Press theÁ button.
Deactivate the A/C function only briefly other‐
wise the windo wscan fog up more quickl y.
Condensation may drip from the underside of
th eve hicle when cooling mode is active. This is
not a sign that there is a malfunction.
Ac tivating/deactivating the A/C function
using the multimedia sy stem
Multimedia sy stem:
,Vehicle.b Climate Control.A/C
The A/C function heats, cools and dehumidifies
th eve hicle's interior air.
#Switch the function on Oor off ª.
Climate control 12
1

Starting theve hicle in emer gency operation
mode
If th eve hicle does not start and thePlace the
Key in the Marked Space See Operator's Manual
display message appears in the multifunction
displa y,yo u can start theve hicle in emer gency
operation mode.
#Make surethat mar ked space 2is em pty.
#Re mo veSmartK ey1 from theke yring.
#Place Smart Key1 in mar ked space 2.
The vehicle will start af ter a short time.
If yo ure mo veSmartK ey1 from mar ked
space 2the engine continues running. For
fur ther vehicle starts ho wever,SmartK ey1
must be located in mar ked space 2during
th e entire journe y.
#Have SmartK ey1 checked at a qualified
specialist workshop.
If th eve hicle does not star t:
#Lea veSmartK ey1 in mar ked space 2.
#Depress the brake pedal and start theve hicle
using thest art/ stop button.
% You can also switchon the po wer supp lyor
th e ignition with thest art/ stop button.
St arting theve hicle via Remo teOnline serv‐
ices
Cooling or heating theve hicle interior before
commencing your journey
% This function is not available in all countries.
If yo ustart theve hicle via your smartphone, the
pr ev iously selecte d air conditioning adjustment
is active. Ensure
thefo llowing before starting the engine:
RThe legal stipulations in the area where your
ve hicle is par ked allow engine starting via
smartphone.
RIt is safe tostart and runth e engine where
yo ur vehicle is par ked.
RThe fuel tank is suff icientlyfilled.
RThe star ter battery is suf ficiently charge d.
St arting the vehicle
&
WARNING Risk of crushing or entrap‐
ment due tounin tentional starting of the
engine
Limbs could be crushed or trapped if the
engine is star ted unintentionally during
service or maintenance work.
#Alw ays secure the engine against unin‐
te ntional starting before car rying out
maintenance or repair work.
Re quirements:RPark position jis selected.
RThe anti- theft alarm sy stem is not activated.
13 0
Driving and pa rking

Overview of driving systems and driving
saf ety sy stems
In this section, youwill find information about
th efo llowing driving sy stems and driving saf ety
sy stems:
R360° Camera (→page 187)
RABS ( Anti-lo ckBra king Sys tem)
(→page 151)
RAc tive Dis tance Assist DISTRONIC
(→pa ge 162)
RAIR BODY CONTROL (→page 174)
RAc tive Brake Assi st(→page 155)
RAc tive Lane Keeping Assist (→page 205)
RATTENTION ASSIST (→page 195)
RBA S (Bra keAssist System) (→page 151)
REBD ( Electronic Brakefo rc eDistribution)
(→page 155)
RESP®(E lectronic Sta bility Program)
(→page 152)
RHill Start Assist (→page 173)
RHOLD function (→page 173)
RST EER CONTROL (→page 155)
RAc tive Steering Assist (→page 167)
RAc tive Parking Assist (→page 190)
RParking Assist PARKTRONI C (→page18 2)
RRe ar view camera (→page 185)
(→pag e18 7)
RCruise control (→page 159) (→pag e16 0)
RBlind Spot Assist andActive Blind Spot Assi st
(→page 202) (→page 203) (→page 202)
RTr af fic Sign Assist (→page197)
Fu nctions of ABS (Anti-lock Brake Sy stem)
ABS regulates the brake pressure in critical driv‐
ing situations:
RDuring braking, e.g. at maximum full-s top
braking or insuf ficient traction of the tires,
th e wheels are pr evented from blocking.
RVehicle steerability while braking is ensured.
If ABS inter venes when braking, youwill feel a
pulsing in the brake pedal. The pulsating brake
pedal can be an indication of hazardous road conditions and can ser
veas a reminder totake
ex tra care while driving.
Sy stem limitations
RABS is active from speeds of appr ox. 5 mph
(8 km/h).
RABS may be impaired or may not function if a
malfunction has occur red and theye l‐
low ! ABSwarning lamp lights up contin‐
uously in the instrument clus ter af terth e
engine is star ted.
Fu nction of BAS (Brake Assist Sy stem)
&
WARNING Risk of an accident caused by
a malfunction in BAS (Brake Assist Sys‐
te m)
If BA S is malfunctioning, the braking dis tance
in an eme rgency braking situation is
increased.
#Depress the brake pedal with full forc e
in emer gency braking situations. ABS
pr eve nts the wheels from locking.
Driving and parking 15
1