ignition MERCEDES-BENZ C-CLASS CABRIOLET 2018 Owner's Manual

Driving
Note
s on Mercedes-AMG vehicles Obser
vethe no tes on thefo llowing topics in the
Supplement, as you may otherwise failto recog‐
nise dangers:
R Rear axle locking dif fere ntial
R AMG Performance exhaust sy stem
R AMG ceramic high-per form ance composite
brake sy stem
R RACE START
R AMG RIDE CONTROL Switching
the po wer supp lyor ignition on
without starting the engine 000A
WARNING Risk of accident and inju ry
due tochildren left unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could:
R open doo rs,th ereby endangering other
persons or road users.
R get out of theve hicle and be hit by
oncoming traf fic.
R ope rate ve hicle equipment and become
trapped, forex ample.
In addition, children could also set theve hi‐
cle in motion, forex ample, by:
R releasing the parking brake.
R shifting the automatic transmission out of
park position 005Dor shifting manual trans‐
mission into idle position.
R starting the engine. 0007
Never lea vechildren and animals unat‐
te nded in theve hicle. 0007
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle.
This also applies tothe Digital Vehicle
Ke y if the "Digital Vehicle Key" function
is activated via Mercedes me connect. 0007
Keep theve hicle key out of reach of
ch ildren. This also applies tothe Digital
Ve hicle Key if the "Digital Vehicle Key"
function is activated via Mercedes me
connect. Re
quirements:
R theke y is in theve hicle and is recognised.
R or: a Digi talVe hicle Key is located in the
mar ked space (0013 page149).
R the brake pedal is not depressed. Driving and parking
147

0007
Toswitch on the po wer supp ly:press but‐
to n1 once.
yo u can activate the windscreen wiper, for
ex ample.
The po wer supp lyis switched off again if thefo l‐
lowing conditions are me t:
R you open the driver's door
R you press but ton1 twice. 0007
Toswitch on the ignition: press button 1
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:
R vehicles with automatic transmission:you
do not start theve hicle within 15minutes
and the transmission is in position 005Dorthe
electric parking brake is applied.
R vehicles with manual transmission: you do
not start theve hicle within 15minutes and
th e electric parking brake is applied.
R you press but ton1 once. St
arting theve hicle St
arting theve hicle with thest art/s top but‐
ton
Requ irements:
R theke y is in theve hicle and is recognised. R
or: a Digi talVe hicle Key is located in the
mar ked space and is recognised
(0013 page 149). 0007
Vehicles with manual transmission:
depress the clutch pedal. 0007
Vehicles with automatic transmission:
shift the transmission toposition 005Dor005C. 0007
depress the brake pedal and press button 1
once. 0007
Ifth eve hicle does not star t:switch off non-
essential consumers and press button 1
once.
If th eve hicle still does not start, one of thefo l‐
lowing display messages appears in the multi‐
function display: 0007
Place the key in the marked space See Own-
er's Manual :st art theve hicle in emer gency
operation mode (0013 page 150).
or 0007
Key not detected Place smartphone in charg-
ing bracket: place the mobile phone in the
mar ked space (0013 page125). 14 8
Driving and pa rking

0007
Dep ress the brake pedal and start theve hicle
using thest art/ stop button.
Any fur ther starts with th e DigitalVehicle
Key
The key is not needed for any fur ther starts. 0007
Place the mobile phone or Digital Vehicle Key
st icke r in the mar ked space 1. 0007
Depress the brake pedal and start theve hicle
using thest art/ stop button.
The "Digital Vehicle Key" service can be deacti‐
va ted in Mercedes me connect at http://
www.mercedes.me. The function is then deacti‐
va ted in the mobile phone via an online connec‐
tion. If connection tothe Internet is not possible,
e.g. af terth e mobile phone or the Digital Vehicle
Ke yst icke r has been stolen, theke y function can
be deacti vated at a Mercedes-Benz service
centre.
St arting theve hicle in emer gency operation
mode
If th eve hicle does not start and thePlace the
key in the marked space See Owner's Manual
message appears in the multifunction displa y,yo
u can start theve hicle in emer gency operation
mode. 0007
Makesure that mar ked space 2is em pty. 0007
Remo vekey1 from theke yring. 0007
Place key1 in mar ked space 2onthe
symbol 3.
The vehicle will start af ter a short time. If
yo ure mo vekey1 from mar ked space 2
th e engine continues running. For fur ther
engine starts ho wever,ke y1 must be loca‐
te d in mar ked space 2on symbol 3during
th e entire journe y. 0007
Have theke y1 checked at a qualified spe‐
cialist workshop.
If th eve hicle does not star t: 0007
place key1 in mar ked space 2and lea ve
it th ere. 0007
Vehicles with manual transmission:
depress the clutch pedal. 0007
Depress the brake pedal and start theve hicle
using thest art/ stop button.
0009 You can also swit chon 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
0009 This function is not available in all countries. 15 0
Driving and pa rking

000A
WARNING Risk of accident due to
unsuitable foot we ar
Operating the pedals may be impaired by
we aring unsuitable foot we ar, e.g.:
R plat form shoes
R high-heeled shoes
R slippers 0007
Alw ayswe ar suitable foot we ar when
driving so that you can operate the ped‐
als safel y. 000A
WARNING Risk of accident when switch‐
ing off the ignition when driving
If yo u swit choff the ignition while driving,
saf ety functions are restricted 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 u will then need touse considerably more
fo rc eto steer and brake. 0007
Do not switch off the ignition while driv‐
ing. 000A
DANG ER Risk of fata l injuries due to
ex haust gases
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases is hazardous tohealth
and can lead topoisoning. 0007
Never lea vethe engine running in an
enclosed space wi thout suf ficient venti‐
lation. 000A
WARNING Risk of skidding and of an
accident due toshifting down on slippery
ro ad sur faces
If yo u shift down on slippery road sur faces to
inc rease the engine braking ef fect, the drive
wheels may lose traction. 0007
Do not shift down on slippery road sur‐
fa ces toinc rease the engine braking
ef fect. 000A
DANG ER Risk of fata l injuries 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, forex ample, if theve hi‐
cle is stuck in sn ow. 0007
When the engine or thest ationary
heater are running, keep theta ilpipe
and the area around theve hicle clear of
sno w. 0007
Open a window on the side of theve hi‐
cle facing the wind toensure an ade‐
qu ate supply of fresh air. 000A
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. Driving and parking
15 3

If
yo u swit chon the HOLD function or select a
transmission position other than 005E, the engine
will automatically stop in thefo llowing situa‐
tions:
R youstop behind a vehicle that is pulling
aw ay.
R youstop at a stop sign when there is no vehi‐
cle in front of you.
R you turn thesteering wheel hard at a low
speed.
The engine is restar ted automatically if:
R vehicles with manual transmission: you
depress the clutch pedal.
R vehicles with automatic transmission: in
transmission position 005B,youre lease the
brake pedal when the HOLD function is not
active.
R vehicles with automatic transmission:
yo u shift into transmission position 005Bor
005E.
R you depress the accelera tor pedal.
R you open or close the soft top. R
an 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 and the engine is not restar ted.
The display message Vehicle is operational
Switch off the ignition before exiting also
appears in the multifunction displa y.Ifyo u do
not swit choff the ignition, the ignition is auto‐
matically switched off af terth re e minutes.
Ve hicles with a 48 V on-board electrical sys‐
te m (EQ Boo sttech nology)
The engine is switched off automatically in the
fo llowing situations if all vehicle conditions for
an automatic engine stop are me t:
R you brake theve hicle toast andstill in trans‐
mission position 005Bor005C.
R you depress the brake pedal while tra velling
at a low speed.
If yo u swit chon the HOLD function or select
ano ther transmission position 005E,the engine will
automatically stop in thefo llowing situations:
R youstop behind a vehicle that is pulling
aw ay. R
youstop at a stop sign when there is no vehi‐
cle in front of you.
R you turn thesteering wheel hard at a low
speed.
The engine is restar ted automatically if:
R youre lease the brake pedal in transmission
position 005Bwhen the HOLD function is not
active and one of thefo llowing conditions is
given:
- the drive program Aor; is not
selected
- the drive prog ram A or; is selec‐
te d but theve hicle does not start to
mo ve.
- the drive program Aor; is selec‐
te d, theve hicle mo ves at a speed of more
th an 20 km/h and Glide mode is not acti‐
va ted.
R you en gage transmission position 005Bor005E.
R youre lease the brake pedal, theve hicle is
not in Glide mode and it starts tomo veon a
ge ntle downhill gradient at a speed below
3 km/h. Driving and pa
rking 15 5

R
you depress the accelera tor pedal.
R an auto matic 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 and the engine is not star ted
again. The display message Vehicle is opera-
tional Switch off the ignition before exiting also
appears in the multifunction displa y.Ifyo u do
not swit choff the ignition, the ignition is auto‐
matically switched off af terth re e minutes. Deactivating or activating
the ECO start/
sto p function 0007
Press button 1.
If indicator la mp2lights up, the ECO start/
st op function is activated.
0009 Depending on the model and theve hicle
equipment, the button may also be located
at a dif fere nt position in the cent reconsole. ECO displ
ayfunction The ECO display summa
rises the driving charac‐
te rist ics from thest art of the journey toits com‐
pletion and assists you in achieving the most
economical driving style.
Yo u can influence consum ption if you:
R drive with particular care
R drive theve hicle in drive program ;
R obser vethege arshift recommendations The inner segment lights up and
the outer seg‐
ment fills up:
R 1 Moderate acceleration 15 6
Driving and pa rking

000A
WARNING Risk of accident due toincor‐
re ct gearshifting
If th e engine speed is higher than the idle
speed and you en gage the transmission posi‐
tion 005Bor005E, theve hicle may accelerate
sharply. 0007
Ifyo u en gage the transmission position
005B or005E 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. 005D
Park position
005E Reversege ar
005C Neut ral
005B Drive position En
gaging reve rsege ar R 0007
Depress the brake pedal and push the
DIRECT SELECT le ver upwards past thefirst
point of resis tance.
The transmission position displ aysho ws005E
in the multifunction displa y.
Engaging neut ral N 0007
Depress the brake pedal and push the
DIRECT SELECT le ver up or down tothefirst
point of resis tance.
The transmission position displ aysho ws005C
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.
Proceed as follo ws ifyo uwa ntthe automatic
transmission toremain in neutral 005C
005Ceve n if
th e ignition is switched off: 0007
start theve hicle. 0007
depress the brake pedal and engage neutral
005C. 0007
release the brake pedal. 0007
switch off the ignition. Driving and parking
16 3

0009
Ifyo uth en exitth eve hicle leaving theke y in
th eve hicle, the automatic transmission
re mains in neutral 005C.
Engaging park position P 0007
Obser vethe no tes on parking theve hicle
(0013 page173). 0007
Dep ress the brake pedal until theve hicle is
st ationar y. 0007
When theve hicle is stationar y,press button
005D.
Pa rk position is only engaged when the trans‐
mission position display 005Dis shown in the
multifunction displa y.If no transmission posi‐
tion display 005Dappears, secure theve hicle
to preve nt it from rolling away.
Pa rk position 005Dis engaged automatically if one
of thefo llowing conditions is me t:
R you swit choff the ignition when theve hicle
is stationary and the transmission is in posi‐
tion 005Bor005E.
R you open the driver's door when theve hicle
is stationary or when driving at a very low speed and
the transmission is in position 005B
or 005E.
0009 Tomanoeuvre with an open driver's door,
open the driver's door while stationary and
engage transmission position 005Bor005E
again.
Engaging drive position D 0007
Depress the brake pedal and push the
DIRECT SELECT le ver down past thefirst
point of resis tance.
The transmission position displ aysho ws005B
in the multifunction displa y.
When the automatic transmission is in transmis‐
sion position 005B, it shiftsthege ars automati‐
call y.This depends on thefo llowing factors:
R the selected drive prog ram
R the position of the accelera tor pedal
R the driving speed Manual
gearshifting 000A
WARNING Risk of skidding and of an
accident due toshifting down on slippery
ro ad sur faces
If yo u shift down on slippery road sur faces to
inc rease the engine braking ef fect, the drive
wheels may lose traction. 0007
Do not shift down on slippery road sur‐
fa ces toinc rease the engine braking
ef fect. When
the automatic transmission is shif tedto
position 005B,you can manually shift it with the16 4
Driving and pa rking

Re
fuelling Re
fuelling theve hicle 000A
WARNING Risk offire or explosion from
fuel
Fu els are highly flammable. 0007
Fire, naked flames, smoking and crea‐
tion of spar ksmust be avoided. 0007
Swit choff the ignition and, if available,
th est ationary heater, before and while
re fuelling theve hicle. 000A
WARNING Risk of inju ryfrom fuels
Fu els are poisonous and hazardous to your
health. 0007
Do not swallow fuel or let it come into
contact with skin, eyes or clo thing. 0007
Do not inhale fuel vapour. 0007
Keep children away from fuel. 0007
Keep doors and windo wsclosed du ring
th ere fuelling process. If
yo u or other people come into contact with
fuel, obser vethefo llowing: 0007
Immediately rinse fuel off your skin with
soap and water. 0007
If fuel comes into contact with your
ey es, immediately rinse them thor‐
oughly with clean water.Seek medical
attention immediately. 0007
Ifyo u swallow fuel, seek medical atten‐
tion immediatel y.Do not induce vomit‐
ing. 0007
Change immediately out of clo thing that
has come into con tact wi thfuel. 000A
WARNING Risk offire or explosion from
elect rostatic charge
Electros tatic charge can crea tespar ksand
th ereby ignite fuel vapours. 0007
Before you open the fuel filler cap or
ta ke hold of the pump nozzle, touch the
me tallic vehicle body.
This dischar ges any electros tatic charge
th at may ha vebuilt up. 0007
Do not get into theve hicle again during
th ere fuelling process.
Otherwise, electros tatic charge could
build up again. 000A
WARNING Risk offire from fuel mixture
Ve hicles with a diesel engine:
If yo u mix diesel fuel with petrol, theflash
point of the fuel mixture is lo werth an that of
pure diesel fuel.
While the engine is running, component
pa rts in theex haust sy stem may overheat
without warning. 0007
Neverre fuel using petrol. 0007
Never mix petrol with diesel fuel. 16 8
Driving and pa rking

000E
NO
TEDama gecaused bythe wrong fuel Ve
hicles with a petrol engine:
Even small amounts of the wrong fuel could
re sult in damage tothe fuel sy stem, the
engine and the emission control sy stem. 0007
Only refuel using unleaded, sulphu r-free
fuel that con form sto European EN 228,
or an equi valent specification. 0007
The RONrequ irement is located in the
fuel filler flap.
Fu el of this specification may con tain up to
10 %ethanol. Your vehicle is suitable for use
with E10 fuel.
Ne verre fuel using any of thefo llowing fuels:
R diesel
R regular petrol with an octane number
lo we rth an 91 RON
R petrol with more than 10%ethanol byvol‐
ume, e.g. E15, E30, E85, E100 R
petrol with more than 3% me thanol by
vo lume, e.g. M15, M30
R petrol with additives con taining me tal
If yo u acciden tally refuel with the wrong fuel: 0007
Do not switch the ignition on. 0007
Consult a qualified specialist workshop. 000E
NO
TEDama gecaused bythe wrong fuel Ve
hicles with a diesel engine:
Even small amounts of the wrong fuel could
re sult in damage tothe fuel sy stem, the
engine and the emission control sy stem. 0007
Only refuel using sulphu r-free diesel
fuel that con form sto European stand‐
ard EN 590, or an equivalent specifica‐
tion.
In countries without sulphur-f ree diesel
fuel, refuel using only lo w-sulphur diesel
fuel with a sulphur content less than
50 ppm. 0007
Vehicles without diesel particulate
fi lter: refuel using only diesel fuel with
a sulphur content less than 500 ppm.
Ne verre fuel using any of thefo llowing fuels:
R petrol
R marine diesel
R heating oil
R pure bio-diesel fuel or vege table oil
R paraf fin or kerosene
If yo u accidentally refuel with the wrong fuel: 0007
Do not switch the ignition on. 0007
Consult a qualified specialist workshop. 000E
NO
TEDo not use diesel torefuel vehi‐
cles with a petrol engine. If
yo u acciden tally refuel with the wrong fuel:
R Do not switch the ignition on. Otherwise
fuel can enter the engine. Driving and parking
16 9