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

#Therefore,check regularly that there
are no flammable materials in the
engine compartment or on theex haust
sy stem.
Re quirements:RThe SmartK eyis located in theve hicle and
th e SmartK eybattery is not dischar ged.
#To switch on the po wer supp ly:press but‐
to n1 (USA) or 2(Canada) once.
Yo u can activate the windshield wipers, for
ex ample.
The po wer supp lyis switched off again if thefo l‐
lowing conditions are me t:
RYou open the driver's door.
RYo upr ess butto n1 (USA) or 2(Canada)
twice.
#To switch on the ignition: press button 1
(USA) or 2(Canada) twice.
The indicator lamps in the instrument clus ter
light up.
The ignition is switched off again if one of the
fo llowing conditions is me t:
RYou do not start theve hicle within
15 minutes.
The transmission is in position j.
or
The electric parking brake is applied.
RYo upr ess butto n1 (USA) or 2(Canada)
once.
St arting theve hicle
Starting theve hicle with thest art/s top but‐
to n
Requ irements:
RThe SmartK eyis located in theve hicle and
th e SmartK eybattery is not dischar ged.
#Shift the transmission toposition jori.
#Depress the brake pedal and press button
1 (USA) or 2(Canada) once.
#Ifth eve hicle does not star t:switch off non-
essential consumers and press button 1
(USA) or 2(Canada) once.
#Ifth eve hicle still does not start and the
Place the Key in the Marked Space See
Operator's Manual display message also
appears in the multifunction display: start
th eve hicle in emer gency operation mode.
Yo u can switchoff the engine while driving by
pressing button 1(USA) or 2(Canada) for
about thre e seconds. Be sure toobser vethe
saf etyno tes under "Driving tips".
Driving and parking 12
9

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

RThe panic alarm is not activated.
RThe hazardwarning lights are switched off.
RThe hood is closed.
RThe doors are closed and loc ked.
RThe windo wsand sliding sunro of are closed.
#Start theve hicle using the smartphone:RAf tereve ryvehicle start, the engine runs for
te n minu tes.
RYo u can car ryout a maximum of two consec‐
utive starting attem pts. The vehicle must be
st ar ted once with the SmartK eybefore trying
to start theve hicle again with the smart‐
phone.
RYo u can stop theve hicle again at any time.
RFu rther information can be found inthe
smartphone app.
Securing the engine against starting before
car rying out maintenance or repair work:
#Switch on the hazard warning lights.
or
#Un lock the doors. or
#Open a side window or
the sliding sunroof.
Breaking-in no tes
Mercedes-AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognize dangers.
To preser vethe engine during thefirs t
1, 000 miles (1,500 km):
Rdrive at varying road speeds and engine
speeds.
Rdrive theve hicle in drive program A
or ;.
Rchange gear before theta ch ome ter needle is
Ô ofthewa yto there d area of theta ch ome‐
te r.
Rdo not shift down a gear manually in order to
brake.
Ravo idoverstra ining theve hicle, e.g. driving at
full thro ttle.
Rdo not depress the accelera tor pedal past
th e pressure point (kickdown).
Ronly increase the engine speed gradually and
accelerate theve hicle tofull speed af ter
1, 000 miles (1,500 km).
This also applies when the engine or parts of the
driv etra in ha vebeen replaced.
Please also obser vethefo llowing breaking-in
no tes:
Rin cer tain driving and driving saf etysy stems,
th e sensor sy stem adjusts automatically
while a cer tain dis tance is driven af terth e
ve hicle has been delivered or af terre pairs.
Fu ll sy stem ef fectiveness is not achie ved
unt ilth e end of this teach-in process.
Rbrakepads, brake discs and tires that are
either new or ha vebeen replaced only ach‐
ie ve opt
imum braking ef fect and grip af ter
se veral hundred kilom eters of driving. Com‐
pensate forth ere duced braking ef fect by
applying greater forc eto the brake pedal.
Driving and parking 13
1

Notes on driving
&
WARNING Risk of accident due to
objects in the driver's foot we ll
Objects in the driver's foot we ll may impede
pedal tr avel or block a depressed pedal.
This jeopardizes the operating and road
saf etyof theve hicle.
#Stow all objects in theve hicle securely
so that they cannot getinto the driver's
fo ot we ll.
#Alw ays ins tallth efloor mats securely
and as prescribed in order toensure
th at there is alw ays suf ficient room for
th e pedals.
#Do not use loose floor mats and do not
place floor mats on top of one ano ther.
&
WARNING Risk of accident due to
unsuitable foot we ar
Operation of the pedals may be restricted
due tounsuit ablefoot we ar such as:
RShoes with platfo rmsoles
RShoes with high heels
RSlippers
#When driving alw ayswe ar suitable
shoes in order tobe able tooperate the
pedals safel y.
&
WARNING Risk of accident when switch‐
ing off the ignition when driving
If yo uswit choff the ignition while driving,
saf etyfunction sar ere stricted or no longer
av ailable. This may af fect the po werst eering
sy stem and the brake forc e boosting, for
ex ample.
Yo uwill then need touse considerably more
fo rc eto steer and brake.
#Do not switch off the ignition while driv‐
ing.
& WARNING Risk ofexhaust gas poisoning
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases causes poisoning.
#Ne ver lea vethe engine running in an
enclosed space wi thout suf ficient venti‐
lation.
& WARNING Risk of skidding and of an
accident due toshifting down on slippery
ro ad sur faces
If yo u shift do wnon slippery road sur faces to
inc rease the engine braking ef fect, the drive
wheels may lose traction.
#Do not shift down on slippery road sur‐
fa ces toinc rease the engine braking
ef fect.
13 2
Driving and pa rking

&DANG ER Risk of fata l injury due topoi‐
sonous exhaust gases
If th eta ilpipe is bloc ked or suf ficient ventila‐
tion is not possible, poisonous exhaust gases
such as carbon monoxide may enter theve hi‐
cle. This is the case if theve hicle getsst uck
in snow ,fo rex ample.
#Ke ep theta ilpipe and the area around
th eve hicle free from snow when the
engine or thest ationary heater are run‐
ning.
#Open a window on the windward side of
th eve hicle toensure an adequate sup‐
ply of fresh air.
& WARNING Risk of accident and injury
due tobeing under the influence of alco‐
hol and drugs while driving
Driving when under the influence of alcohol
and/or drugs is an extreme lydangerous
combination. Even small quantities of alcohol
or drugs may af fect your reflexe s, perception
and judgment.
The probability of a serious or even fata l acci‐
dent greatly inc reases if you dr ive when
under the influence of alcohol or drugs.
#Do not drink alcohol or take drugs while
driving, and do not allow an yone to
drive who has been drinking alcohol or
ta king drugs.
&
WARNING Risk of accident due tothe
brake sy stem overheating
If yo u lea veyour foot on the brake pedal
when driving, the brake sy stem may over‐
heat.
This increases the braking dis tance and the
brake sy stem may evenfa il.
#Ne ver use the brake pedal as a foot re st.
#Do not depress the brake pedal and the
accelerator pedal at the same time
while driving.
* NO
TEWearing out the brake linings by
continuously dep ressing the brake pedal
#Do not depress the brake pedal contin‐
uously whilst driving.
#To use the braking ef fect of the engine,
shift toa lo werge ar in good time.
* NO
TEDama getothe driv etra in and the
engine when pulling away
#Do not warm upthe engine when the
ve hicle is stationar y.Pull away immedi‐
atel y.
#Avoid high engine speeds and driving at
full thro ttle until the engine has reached
operating temp erature.
#Do not allow the wheels tospin.
* NO
TEDama getothe catalytic con verter
due tonon-combu sted fuel
The engine is not running smoot hly and is
misfiring.
Driving and parking 13
3

Non-combusted fuel may get into the cata‐
lytic con verter.
#Only depress the accelera tor pedal
slightl y.
#Have the cause rectified immediately at
a qu alified specialist workshop.
Limited braking ef fect on salt-treate dro ads:
Rdue tosalt build-up on the brake discs and
brakepads, the braking dis tance can increase
conside rably or result in braking only on one
side.
Rmaintain a much greater safe dis tance tothe
ve hicle in front.
To preve nt salt build-up:
Rbrake occasionally while paying attention to
th e tra ffic conditions.
Rcarefully depress the brake pedal at the end
of the journey and when starting the next
journe y.
ECOstart/s top function
Opera tion of the ECO start/s top function
Mercedes -AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may not recog‐
nize dangers.
The engine is au tomatical lyswitched off if the
fo llowing conditions are me t:
Rifyo ubr ake theve hicle toast andstill in
transmission position hori.
Rif all vehicle conditions for an au tomatic
engine stop are met.
The è symbol appears in the multifunction
display when theve hicle is stationar y.
The engine is restar ted automatically if:
Ryo ure lease the brake pedal in transmission
position hwhen the HOLD function is not
active.
Ryo u shift from transmission position j.
Ryou enga getransmission position hork.
Ryou depress the accelerator pedal.
Ryo uch ange theve hicle le vel.
Ran automatic engine start is necessar y.
If th e engine was switched off bythe ECO start/
st op function and you lea vetheve hicle, a warn‐
ing tone sounds. The Vehicle Operational Switch
the Ignition Off Before Exiting displaymessage
also appears in the multifunction displa y.Ifyo u
do not switch off the ignition, the ignition is
automatically switched off af ter one minute.
13 4
Driving and pa rking

DYNA MIC SELECT switch
Function of theDY NA MIC SELECT switch
Mercedes-AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognize dangers.
Use theDY NA MIC SELECT switch tochange
between thefo llowing drive programs:
R= (Individual): individual settings
RB(Sport Plus): particularly sporty driving
st yle
RC (Sport): sporty driving style
RA (Comfort): comfortable and economi‐
cal driving style
RVe hicles with MAGIC BODY CONT ROL:
N (CURVE): comfortable driving with
cur veinclination function
Depending on the drive program selected thefo l‐
lowing vehicle characteristics will change:
RDrive
-Engine and transmission management
-Ac tive Dis tance Assist DISTRONIC
RESP®
RSuspension
RSteering
Selecting the drive prog ram
#Press DYNA MIC SELECT switch 1forw ards
or backwards.
The drive prog ram selected appears in the
multifunction displa y.
Configuring drive prog ram I
Multimedia sy stem:
,Vehicle.e DYNAMIC
SELECT.Individual
#Select the individual setting.
Displaying vehicle data
Multimedia sy stem:
,Vehicle.e DYNAMIC SELECT
#Select Vehicle Data.
The vehicle data is displa yed.
Displaying engine data
Multimedia sy stem:
,Vehicle.e DYNAMIC SELECT
#Select Engine Data.
136
Driving and pa rking

%The values for engine output and engine tor‐
qu e may deviate from the nominal values.
Items that can influence this are, forex am‐
ple:
REngine speed
RSea le vel
RFu el grade
ROutside temp erature
Automatic transmission
DIRECT SELECT le ver
Fu nction of the DIRECT SELECT le ver
&
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.
&
WARNING Risk of accident due toincor‐
re ct gearshifting
If th e engine speed is higher than the idle
speed and you enga gethe transmission posi‐
tion hork, theve hicle may accelerate
sharply.
#If yo u enga gethe transmission position
h ork always depress the brake
pedal firm lyand do not accelerate at
th e same time.
Use the DIRECT SELECT le verto shift the trans‐
mission position. The cur rent transmission posi‐
tion is displ ayed in the multifunction displa y.
Driving and parking 13
7

jPark position
kReversege ar
iNeutra l
hDrive position En
gaging reve rsege ar R
#Depress the brake pedal and push the
DIRECT SELECT le ver up past thefirs t point
of resis tance.
The transmission position displ aysho wsk
in the multifunction displa y.
Shifting toneutral N
#Depress the brake pedal and push the
DIRECT SELECT le ver up or down tothefirs t
point of resis tance.
The transmission position displ aysho wsi
in the multifunction displa y.
Subsequently releasing the brake pedal will
allow youto mo vetheve hicle freel y,e.g. topush
it or tow it away.
If yo uwa ntthe automatic transmission to
re main in neutral N even if the ignition is
switched off:
#St art theve hicle.
#Depress the brake pedal and shift toneutral
i.
#Re lease the brake pedal.
#Switch the ignition off. %
Ifyo uth en exitth eve hicle leaving the
SmartK eyintheve hicle, the automatic trans‐
mission remains in neutral i
Engaging park position P
#Press thej button.
The transmission position display sho wsj
in the multifunction displa y.
Pa rk position jis engaged automatically if one
of thefo llowing conditions is me t:
RYou switch the engine off with the transmis‐
sion in position hork.
RYou open the driver's door when theve hicle
is at a standstill or when driving at a very low
speed and the transmission is in position h
or k.
Engaging drive position D
#Depress the brake pedal and push the
DIRECT SELECT le ver down past thefirs t
point of resis tance.
The transmission position displ aysho wsh
in the multifunction displa y.
138
Driving and pa rking

Whenthe automatic transmission is in transmis‐
sion position h, it shiftsthege ars automati‐
call y.This depends on thefo llowing factors:
RThe selected drive program
RThe position of the accelera tor pedal
RThe road speed
Manual gearshifting
&
WARNING Risk of skidding and of an
accident due toshifting down on slippery
ro ad sur faces
If yo u shift downonslipp eryroad sur faces to
inc rease the engine braking ef fect, the drive
wheels may lose traction.
#Do not shift down on slippery road sur‐
fa ces toinc rease the engine braking
ef fect.
#To activate: pullsteering wheel paddle
shif ter1 or2.
Manual gearshifting is activated for a short
time. The cur rent gear is displa yed in the
multifunction displa y.
% How long the manual gearshifting stay s acti‐
va ted depends on the driving style.
#To shift up: pullsteering wheel paddle
shif ter2.
#To shift down: pullsteering wheel paddle
shif ter1.
#To deactivate: pullsteering wheel paddle
shif ter2 and hold it in place.
The transmission position happears in the
multifunction displa y.
% Ifyo u select theManual drive setting in
drive prog ram =, manual gearshifting is
permanent lyactivated.
Mercedes -AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognize dangers.
Gearshift recommendation
Mercedes -AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may not recog‐
nize dangers.
The gearshift recommendation assists you in
adopting an economical driving style.
Driving and parking 13
9