engine MERCEDES-BENZ S-CLASS CABRIOLET 2018 Owner's Manual

Climate control......................................... 121
Overview of climate contro l systems ......... .121
Operating the climate control sy stem ......... 121
Drivin gand pa rking ................................. 128
Driving ........................................................ 128
DY NA MIC SELECT switch ............................1 36
Au tomatic transmission .............................. 137
Re fueling .................................................... 140
Pa rking ...................................................... .142
Driving and driving saf etysy stems ............ .150
Instrument Display and on-board
comp uter .................................................. 208
Instrument Display overview ...................... 208
Overview of the buttons on thesteering
wheel ......................................................... .209
Operating the on-board computer .............. 209
Overview of displa ysinthe multifunction
display ......................................................... 211
Ad justing the instrument lighting ............... .211
Menus and submenus ................................. 212
Head-up Display .......................................... 218
Vo ice Control Sy stem .............................. 220
No tes on operating saf ety.......................... 22 0
Ope ration ................................................... 220
Using theVo ice Cont rol Sy stem ef fec‐
tively ........................................................... 222
Essential voice commands ........................ .223
Multimedia sy stem .................................. 233
Overview and operation .............................. 233
Sy stem settings .......................................... 242
ENERGIZING comfort .................................. 254
Na vigation .................................................. 256
Te lephone .................................................. .280
Online and Internet functions ..................... 297
Media .........................................................3 04
Ra dio ...........................................................3 16
Sound ......................................................... 324
Main tenance and care ............................. 327
ASS YST PLUS service inter val display ........ 327
Engine compartment .................................. 328
Cleaning and care ...................................... .334
Breakdown assist ance............................ 342
Emergency ..................................................3 42
Flat tire ....................................................... 342
Battery (vehicle) ......................................... 348
To w starting or towing away ....................... 353
Electrical fuses ........................................... 359
Wheels and tires ...................................... 362
No tes on noise or unusual handling char‐
acteristics .................................................. .362
Re gular checking of wheels and tires ......... 362
No tes on snow chains ................................ 363
Ti re pressure .............................................. 364
Loading theve hicle .....................................3 70
Ti re labeling ................................................ 374
Definition of term sfo r tires and loading ..... 379
Changing a wheel ...................................... .382
Tech nical data .......................................... 392
No tes on tech nical da ta.............................. 392
Ve hicle electronics .....................................3 92
Ve hicle identification plate, VIN and
engine number overview ............................ .394
Operating fluids .......................................... 396
Conte nts 3

1Speedom eter →
208
2 AIR BODY CONTROL malfunctioning →
454
3 #! Turn signal light →
109
4 Multifunction display →
211
5 Tach ome ter →
208
6 å ESP
®OFF →
447
÷ ESP
®→
447
7 K High beam →
109
L Low beam →
108
T Parking lights →
108
8 ? Coolant too hot/cold →
456
9 Coolant temp erature gauge →
208
A · Distance warning →
454
B Ð Steering assis tance malfunction →
455
C # Electrical malfunction →
456
D Brakes (red) →
447
$ USA only
J Canada only
E ü Seat belt is not fastened →
454
F Fuel le vel display
G 8 Fuelreser vewith fuel filler flap location
indicator →
456,
456
H R Rear fog light →
109
I 6 Restra int sy stem →
34
J % Indicator lamp has no function
K ; Check Engine →
456
L Elect ric park ing brake applied (red) →
447
F USA only
! Canada only
M h Tire pressure monitoring sy stem →
460
N ! ABS malfunction →
447
O ! Electric pa rking brake (yellow) →
447
At aglance – Warning and indicator lamps 11

Protecting the environment
+ENVIRONMENTAL NOTEEnvironmental
damage duetooperating conditions and
personal driving style
The pollutant emission of your vehicle is
directly related tothewa yyo u operate your
ve hicle.
Yo u can help toprotect the environment by
operating your vehicle in an environmentally-
re sponsible manner. Please obser vethefo l‐
lowing recommendations on ope rating condi‐
tions and pe rsonal driving style.
Operating conditions:
#Make sure that the tire pressure is cor‐
re ct.
#Do not car ryany unnecessary weight
(e.g. roof luggage rack s once you no
longe r need them).
#Ad here tothe service inter vals.
A regularly serviced vehicle will contri b‐
ute toenvironmen tal pr otection.
#Alw ays ha vemaintenance workcar ried
out at a qualified specialist workshop.
Pe rsonal driving style:
#Do not depress the accelera tor pedal
when starting the engine.
#Do not warm upthe engine while the
ve hicle is stationar y.
#Drive carefully and maintain a suitable
dist ance from theve hicle in front.
#Av oid frequent, sudden acceleration
and braking.
#Change gear in good time and use each
ge ar only uptoÔ of its maximum
engine speed.
#Switch off the engine in stationary traf‐
fi c, e.g. byusing the ECO start/ stop
function.
#Drive fuel-ef ficiently.
Environmental issues and recommendations:
it is recommended that youre -use or recycle
materials ins tead of just disposing of them. The
releva nt environmental guidelines and regu‐
lations ser vetoprotect the environment and
must be strictly obser ved.
Mercedes-Benz GenuineParts
+ENVIRONMEN TALNO TEEnvironmental
damage causedbynot using recycled
re conditioned components
Daimler AGoffers recycled reconditioned
components and part s withthe same quality
as new parts. The same entitlement from the
Limited Warranty is valid as for new parts.
#Use recycled reconditioned compo‐
nents and part s from Daimler AG.
Gene ral no tes 21

Service andvehicle operation
Ve hicle operation outside the USA or Canada
When you are abroad withyo ur vehicle, obser ve
th efo llowing points:
RService points or replacement parts may not
be available immediatel y.
RUnleaded fuel may not be available forve hi‐
cles with a catalytic con verter. Leaded fuel
may cause damage tothe catalytic con verter.
RThe fuel may ha vean extreme lylow octane
number. Unsuitable fuel can cause engine
damage.
Some Mercedes-Benz models are available in
Europe thro ugh our European De livery Prog ram.
Fo r more information, please consult an au thor‐
ized Mercedes‑Benz service center, or write to
one of thefo llowing address:
In the USA:
Mercedes-Benz US A,LLC
European Delivery Department
One Mercedes Drive
Montvale, NJ 0764 5-0350 In Canada:
Mercedes-Benz Canada, Inc.
European Delivery Department
98
Vande rhoof Avenue
To ronto, Ontario M4G 4C9
Maintenance
Yo ur cus tomer advisor confirms the service in
th e service report.
Ro adside Assistance
The Mercedes-Benz Roadside Assis tance Pro‐
gram of fers tech nical help in the case of a
breakdown. Your calls totheto ll-f reeRo adside
Assis tance Hotline are ans weredby our agents
24 hours a da y,365 da ysaye ar.
1-800- FOR-MERCedes (1-800-367-63 72) (USA)
1-800-387-0 100 (Canada)
Yo u can find fur ther information in the
Mercedes-Benz Roadside Assis tance Program
brochure (USA) orthe "Roadside Assis tance" section in
the maintenance and warranty infor‐
mation booklet (Canada). Youwill find bo thin
th eve hicle document wallet.
Change of address or change of ownership
Intheev ent of a change of address, please send
us the "Notification of address change" in the
Service and Guarantee booklet or simply call the
Mercedes-Benz Cus tomer Assis tance Center
(USA) on the hotline number
1-800-FO R-MERCedes (1-800-367-63 72) or Cus‐
to mer Service (Canada) on 1-800-387-0 100. We
can then reach you in a timely fashion, if neces‐
sar y.
If yo u sell your Mercedes, please lea veall litera‐
ture in theve hicle so that it is available tothe
next owner. If you ha vepur chased a used vehi‐
cle, please send us the "Notice of Pur chase of
Used Car" in the Service and Guarantee booklet
or simply call the Mercedes-Benz Cus tomer
Assis tance Center (USA) at the hotline number
1-800-FO R-MERCedes (1-800-367-63 72) or Cus‐
to mer Service (Canada) at 1-800-387-0 100.
Gene ral no tes 23

*NO
TEDeployment of the Emer gency
Te nsioning Device when the front
passenger seat is unoccupied
If th e seat belt tongue is engaged in the seat
belt buckle of the unoccupied front
passenger seat, the Emer gency Tensioning
Device may also depl oyintheev ent of an
accident along with other sy stems.
#Only one person should use each seat
belt at any one time.
Re leasing seat belts
#Press there lease button in the seat belt
buckle and guide the seat belt back with the
seat belt tongue.
Ac tivating or deactivating seat belt adjust‐
ment via the multimedia sy stem
Multimedia sy stem:
,Vehicle.î Vehicle Settings.Belt
Adjustment
#Ac tivate Oor deacti vate ª the function.
Seat belt warning function for the driver and
front passen ger
The ü seat belt warning lamp in the Instru‐
ment Display is a reminder that all vehicle occu‐
pants must weartheir seat belts cor rectly.
The ü seat belt warning lamp lights up for six
seconds af tereve ryengine start.
In addition, an acoustic warning tone may sound.
When the driver's and front passenger doors are
closed and the driver and front passenger ha ve
fast ened their seat belts, the seat belt warning
goes out. During a journe
y,the seat belt warning lights up
if:
RThe vehicle speed exceeds 15mp h
(25 km/h) and the driver's or front
passenger seat belt is not fastened.
RThe driver or front passenger unfas tens their
seat belt while theve hicle is in motion.
Airbags
Overview of airbags
1Driver's knee airbag
2Driver's airbag
40
Occupant saf ety

Children in theve hicle
Note s onthe safe transportation of children
&
WARNING Risk of accident and injury
due tochildren left unatte nded inthe
ve hicle
If yo u lea vechildren unatte nded intheve hi‐
cle, they may be able toset theve hicle in
motion, forex ample by:
RRe leasing the parking brake.
RShifting the automatic transmission out
of park position j.
RStarting the engine.
In addition, they may operate vehicle equip‐
ment and become trapped.
#Ne ver lea vechildren unatte nded inthe
ve hicle.
#When leaving theve hicle, alw aysta ke
th e SmartK eywith you and lock the
ve hicle.
&
WARNING Risk offata l injury due to
ex posure toextreme heat or cold in the
ve hicle
If people – particularly children – are
ex posed toextreme heat or cold over an
ex tended pe riod of time, there is a risk of
injury or evenfa ta l injur y.
#Never lea veanyone – pa rticularly chil‐
dren – unatte nded intheve hicle.
&
WARNING Risk of burn s whenthech ild
seat is exposed todirect sunlight
If th ech ild restra int sy stem is exposed to
direct sunlight or heat, parts could heat up.
Children could suf fer burns from these parts,
particularly on me tallic parts of thech ild
re stra int sy stem.
#Alw ays make sure that thech ild
re stra int sy stem is not exposed to
direct sunlight.
#Pr otect it with a blank et,fo rex ample.
#Ifth ech ild restra int sy stem has been
ex posed todirect sunlight, allow it to
cool before securi ng achild into it.
#Ne ver lea vechildren unatte nded inthe
ve hicle.
The use of seat belts and child restra int sy stems
is requ ired bylaw in:
RAll 50 states
RThe U.S. territories
RThe District of Columbia
RAll Canadian pr ovinces
All child restra int sy stems must meet thefo llow‐
ing standards:
RU. S. Federal Mo torVe hicle Saf etySt andards
21 3 and 225
RCanadian Mo torVe hicle Saf etySt andards
21 3 and 210.2
Yo u can obtain fur ther information about the
cor rect child restra int sy stem from any author‐
ized Mercedes-Benz Center.
Occupant saf ety 49

SmartKey
Overview of SmartK eyfunctions
&
WARNING Risk of accident and injury
due tochildren left unatte nded inthe
ve hicle
If ch ildren are left unatte nded intheve hicle,
th ey could:
Ropen doo rs,th ereby endangering other
persons or road users.
Rge t out of theve hicle and be hit by
oncoming traf fic.
Rope rate ve hicle equipment and become
trapped, forex ample.
In addition, children could also set theve hi‐
cle in motion, forex ample, by:
Rreleasing the parking brake.
Rshifting the automatic transmission out of
park position j.
Rstarting the engine.
#Ne ver lea vechildren and animals unat‐
te nded in theve hicle.
#When leaving theve hicle, alw aysta ke
th e SmartK eywith you and lock the
ve hicle.
#Ke ep the SmartK eyout of there ach of
ch ildren.
* NO
TEDama getotheke ycaused by
magnetic fields
#Ke ep theke yaw ay from strong mag‐
netic fields.
1Loc ks
2Battery check lamp
3Unloc ks
4Opens/closes the trunk lid
5Pa nic alarm
The Smart Keyloc ksand unlo cksth efo llowing
components:
RDoo rs
RTrunk lid
RFu elfiller flap
Opening and closing 57

#Release the door handle.
#Tu rn the mechanical keyanti-clo ckwise to
position 1.
#Carefully press the co ver onto the lock cylin‐
der until it engages and is seated firm ly.
Tr unk
Opening the trunk lid
&
WARNING Risk ofexhaust gas poisoning
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Exhaust
ga ses can enter theve hicle interior if the
trunk lid is open when the engine is running,
especially if theve hicle is in motion.
#Alw ays switch off the engine before
opening the trunk lid.
#Ne ver drive with the trunk lid open.
* NO
TEDama getothe trunk lid byobs ta‐
cles ab ovetheve hicle
The trunk lid swings upwards when it is
opened.
#Therefore, make sure that there is suf fi‐
cient clearance ab ovethe trunk lid.
Yo u ha vethefo llowing options toopen the trunk
lid:
#Wi th th e trunk lid unloc ked, press theto p of
th est ar.
#Pull thefo lded-out star when there ar view
camera is activated and the trunk lid is
unloc ked.
#Ve hicles with trunk lid co nvenience clos‐
ing: With th e trunk lid stopped in an inter‐
mediate position, pull the trunk lid upwards
and release as soon as it begins toopen.
% Toopen the trunk lid, pull on thefo lded-out
st ar when there ar view camera is activated.
#Press and hold thep button on the
SmartK ey.
Opening and closing 65

Anti-theft protection
Fu nction of the immobilizer
The immobilizer pr events your vehicle from being
st ar ted without the cor rect SmartK ey.
The immobilizer is automatically activated when
th e ignition is switched off and deactivated when
th e ignition is switched on.
When leaving theve hicle, alw aysta ke the Smart‐
Ke ywit hyo u and lock theve hicle. An yone can
st art the engine if a valid SmartK eyhas been left
inside theve hicle.
% Intheeve ntthe engine cannot bestar ted
(y et theve hicle ’sstar ter battery is charge d),
th e sy stem is not operational. Contact an
authorized Mercedes-Benz Center or call
1-800-FO R-MERCedes (in the USA) or
1-800-387-0 100 (in Canada).
ATA (anti-theft alarm system)
Fu nction of theATA system (anti-theft ala rm
sy stem)
If th eATA system is armed, a visual and audible
alarm is triggered in thefo llowing situations:
RWhen a door is opened
RWhen the trunk lid is opened
RWhen the hood is opened
The ATA sy stem is armed automatically af ter
appr oximately 10seconds:
RAfter locking theve hicle with the SmartK ey
RAfter locking theve hicle using KEYLESS-GO.
When theATA system is armed, indicator lamp
1 flashes.
The ATA sy stem is automatically deactivated:
RAf ter unlocking theve hicle with the Smart‐
Ke y
RAfter pressing thest art/ stop button with the
SmartK eyinside theve hicle
Opening and closing 79

Notes onthe cor rect driver's seat position
&
WARNING Risk of injury from adjusting
th eve hicle settings while theve hicle is in
motion
Yo u could lose cont rol of theve hicle in the
fo llowing situations:
Rifyo u adjust the driver's seat, the head
re stra int, thesteering wheel or the mir ror
while theve hicle is in motion
Rifyo ufa sten your seat belt while theve hi‐
cle is in motion
#Before starting the engine: adjust the
driver's seat, the head restra int, the
st eering wheel or the mir ror and fasten
yo ur seat belt.
Ensure thefo llowing when adjusting thesteering
wheel 1, seat belt 2and driver's seat 3:
RYou are as faraw ay from the driver's airbag
as possible
RYo u are sitting in a no rmal upright position
RYour thighs are slightly supportedby the seat
cushion
RYo ur legs are not entirely stre tched and you
can dep ress the pedals properly
RThe back of your head is support ed ateye
le ve lby the center of the head restra int
RYo u can hold thesteering wheel with your
arms slightly bent
RYo u can mo veyour legs freely
RYo u can see all the displa yson the instru‐
ment clus ter clearl y
RYou ha vea good overview of the traf fic con‐
ditions
RThe seat belt is pulled snugly against the
body and is routed across the center of your
shoulder and across your hips in the pelvic
area
Seats and stowing 81