engine MERCEDES-BENZ E-CLASS CABRIOLET 2018 Repair Manual

Perm itted towing me thods
Ve hicle equipment/to wing
me thod
Bo th axles on thegr oundFront axle raisedRe ar axle raised
Ve hicles with manual transmission Yes, maximum 31miles (50 km) at
31 mp h (50 km/h) Ye
s, maximum 31miles (50 km) at
31 mp h (50 km/h) Ye
s, maximum 31miles (50 km) at
31 mp h (50 km/h)
Ve hicles with automatic transmis‐
sion Ye
s, maximum 31miles (50 km) at
31 mp h (50 km/h) No
Yes, if thesteering wheel is fixe d in
th e center position with a steering
wheel loc k.
4MATIC vehicles Yes, maximum 31miles (50 km) at
31 mp h (50 km/h) No
No
Towing wit h araised axle: towing should be
per form ed byato wing compan y.
Towing theve hicle with bo thaxles on the
gr ound
00BBObser vethe no tes on the permitted towing
me thods (→page 343) (→page 344).
00BBMake sure that the battery is connected and
ch arge d.
When the battery is dischar ged:
Rthe engine cannot bestar ted.
Rth e electric parking brake cannot bereleased
or applied.
Rve hicles with automatic transmission: the
automatic transmission cannot be shif tedto
position 005Cor005D.
34 4
Breakdown assis tance

Installingtheto wing eye
00BBPress the mark on co ver1 inwa rds and
re mo ve.
00BBScr ew intheto wing eyeclockwise as far as it
will go and tighten.
00CE Make sure that co ver1 engages in the
bumper when youre mo vetheto wing eye. 0075
NO
TEDama gedue toincor rect use of
th eto wing eye
When a towing eye is used toreco ver a vehi‐
cle, theve hicle may be damaged in the proc‐
ess.
00BBOnly use theto wing eyeto to waw ay or
to w start theve hicle.
To w starting theve hicle (eme rgency engine
st arting)
Ve hicles with automatic transmission
0075 NO
TEDama getothe automatic trans‐
mission due to towstarting
The automatic transmission may be damaged
in the process of tow starting vehicles with
automatic transmission.
00BBVe hicles with automatic transmission
must not be tow star ted.
00BBVe hicles with automatic transmission must
not be tow star ted.
Electrical fuses
Note s on electrical fuses
0071
WARNING Risk of accident and injury
due to ov erloaded lines
If yo u manipulate or bridge a faulty fuse or if
yo ure place it with a fuse with a higher
amperage, the electric line could be overloa‐
ded.
This could result in a fire .
00BBAlw aysre place faulty fuses with speci‐
fi ed new fuses conta iningthe cor rect
amperage.
0075 NO
TEDama gecaused byincor rect fuses
Incor rect fuses may cause damage toelectri‐
cal components or sy stems.
00BBOnly use Mercedes-Benz appr oved
fuses with the cor rect fuse rating.
Blown fuses must bereplaced with fuses of the
same rating, which you can recognize bythe col‐
our and fuse rating. For fuses in the engine com‐
34 8
Breakdown assis tance

partment and trunk, only usethose fuses
mar ked with an "S". The fuse ratings are li sted in
th e fuse assignment diagram.
Fu se assignment diag ram: onthe fuse box in
th e trunk (
→page 351).
0075 NO
TEDama geor malfunctions caused
by moisture
Moisture may cause dama getothe electrical
sy stem or cause it tomalfunction.
00BBWhen the fuse box is open, make sure
th at no moisture can enter the fuse
box.
00BBWhen closing the fuse box, make sure
th at the seal of the lid is positioned cor‐
re ctly on the fuse box.
Ifth e newly inser ted fuse also blo ws, ha vethe
cause traced and rectified at a qualified special‐
ist workshop, e.g. a Mercedes-Benz Service Cen‐
te r.
Ensure thefo llowing before replacing a fuse:
RThe vehicle is secured against rolling away.
RAll electrical consumers are switched off.
RThe ignition is switched off.
The electrical fuses are located in various fuse
bo xes:
RFu se box on the driver's side of the engine
compartment (→page 349)
RFu se box on the driver's side of the cockpit
(→page 350)
RFu se box in the front passenger foot we ll
(→page 350)
RFu se box in the trunk on theright-hand side
of theve hicle, when vie wed in the direction
of tr avel (
→page 351)
Fuse box in the engine compa rtment
Observ eth e no tes on electrical fuses
(→page 348).
Re quirements:
RYou need a dry clo thand a scre wdriver. Opening
0071
WARNING Risk of injury from usingthe
windshield wipers while the engine hood
is open
When the engine hood is open and the wind‐
shield wipers are set in motion, you can be
trapped bythe wiper linkage.
00BBAlw ays switch off the windshield wipers
and ignition before opening the engine
hood.
Breakdown assis tance 34
9

00BBTurn clip 2on co ver1 aqu arter-turn to
th e left.
00BBPull co ver1 upwards in the direction of the
ar row .
00BBRemo veany existing moisture from the fuse
box using a dry clo th.
00BBLoosen scr ews4, remo vefuse box lid 3
from theto p.
Closing
00BBCheck whe ther the seal is positioned cor‐
re ctly in the lid.
00BBInsert the lid into the brac ket at there ar of
th e fuse box.
00BBFo ld down lid of the fuse box and tighten
scr ews4.
00BBInsert co ver1 on bo thsides and engage
th e saf etyclips.
00BBTu rn clip 2on co ver1 one quarter-turn to
th eright.
00BBClose the engine hood.
Dashboard fuse box
The fuse box is on the side of the dashboard
under a co ver.
00BBConta ct an au thorized Mercedes-Benz Cen‐
te rfo r fur ther information.
Fu se box in the front-passenger foot we ll
Obser vethe no tes on electrical fuses
(→page 348).
350 Breakdown assis tance

Setting upthefo lding wheel chock
Prepa ring theve hicle for a wheel change
Re quirementsRThe requ ired tire-change tool kit is available.
If yo ur vehicle is not equipped with the tire-
ch ange tool kit, consult a qualified specialist
wo rkshop tofind out about suitable tools.
RThe vehicle is not on a slope.
RThe vehicle is on solid, non-slippery and le vel
ground .
00BBApplythe electric parking brake manually.
00BBMo vethe front wheels tothest ra ight-ahead
position.
00BBVe hicles with automatic transmission:
shift into position 005D.
00BBVehicles with AIR BODY CONT ROL:set the
normal vehicle le vel (→page 173).
00BBSwitch off the engine.
00BBMake sure that the engine cannot bestar ted.
00BBPlace choc ks orother suitable items under
th e front and rear of the wheel that is diago‐
nally opposite the wheel youwish tochange.
00BBRe mo vethe hub caps if necessary
(→page 377).
00BBRa ising theve hicle (→page 378).
Re moving and in stalling hub caps
Re quirement:RThe vehicle is prepared for a wheel change
(→page 377).
Plas tic hub cap
00BBToremo ve:turn the center co ver of the hub
cap anti-clockwise and remo vethe hub cap.
00BBTo install: make sure that the center co ver of
th e hub cap is turned anti-clockwise.
00BBPo sition the hub cap and turn the center
co ver clockwise until the hub cap engages
ph ysically and audibly.
Wheels and tires 37
7

Aluminum hub cap
00BBToremo ve:position soc ket2 on hub cap
1.
00CE The soc ket can be found inthe tire-change
to ol kit.
00BBPo sition wheel spanner 3on soc ket2.
00BBUsing wheel spanner 3, turn hub cap1
counter-clo ckwise and remo veit.
00BBTo install: position hub cap 1and turn until
it is comple tely flush withth e wheel.
00BBPo sition soc ket2 on hub cap 1.
00BBAttach wheel spanner 3tosoc ket2 and
tighten the hub cap clockwise.
Specified tightening torq ue: 18lb-ft
(25 Nm).
00BBRa ise theve hicle (→page 378).
Ra ising theve hicle when changing a wheel
Re quirements:RThere are no persons in theve hicle.
RThe vehicle has been prepared for a wheel
ch ange (→page 377).
RThe hub caps ha vebeen remo ved
(→page 377).
Impor tant no tes on using the jack:
Ronly use theve hicle-specific jack that has
been tested and appr ovedby Mercedes-Benz
to raise theve hicle.
Rthe jack is only designed forra ising and hold‐
ing theve hicle for a short time while a wheel
is being changed and not for maintenance
wo rkunder theve hicle.
Rthe jack must be placed on a firm ,fl at and
non-slip sur face. If necessar y,use a lar ge,
load-bearing, non-slip underla y.
Rthefo ot ofthe jack must be positioned verti‐
cally under the jack support point.
Ru les of conduct when theve hicle is raised:
RNe ver place your hands or feet under the
ve hicle.
RDo not lie under theve hicle.
RDo not start the engine and do not release
th e electric parking brake.
RDo not open or close any doors or the trunk
lid.
37 8
Wheels and tires

Rmobile phones (2G/3G/4G)
There are no restrictions when positioning the
antenna on the outside of theve hicle forth efo l‐
lowing frequency bands:
RTr unked radio sy stem/T etra
R70 cm frequency band
R2G/3G/4G
Ve hicle identification plate, VIN and engine
number
Ve hicle identification plate
Vehicle identification plate (USA only)
1Perm issible grossmass
2Pe rm issible front axle load
3Perm issible rear axle load
4Pa int code
5VIN (vehicle identification number)
Tech nical da ta385

Vehicle identification plate (Canada only)
1Perm issible grossmass
2Pe rm issible front axle load
3Perm issible rear axle load
4Pa int code
5VIN (vehicle identification number)
The maximum permissible gross vehicle weight
is made up of theve hicle weight, all vehicle
occupants, the fuel and the load. The maximum
permissible axle load is the maximum weight
th at can be car ried on one axle (front or rear
axle). Ne
verexc eed the maximum gross vehicle weight
or the maximum permissible axle load forth e
front or rear axle.
VIN in front of theright-hand front seat
1VIN (vehicle identification number)
2Floor co vering Ad
ditional plates
1Pla tewith information about emissions test‐
ing, including con firm ation of emissions
guidelines at theU. S. federal le vel as well as
fo r California
2Engine number (s tamp ed into the crankcase)
3VIN (vehicle identification number)
386
Tech nical da ta

Operatingfluids
Note s on operating fluids
0071
WARNING Risk of injury from operating
fl uids harmful to your health
Operating fluids maybe pois onous and harm‐
ful to yo ur health.
00BBObser vethete xt on the original con‐
ta iners when using, storing or disposing
of operating fluids.
00BBAlw aysst ore operating fluids sealed in
th eir original conta iners.
00BBAlwayske ep children away from operat‐
ing fluids.
00D2ENV IRONMEN TALNO TEEnvironmental
pollution caused byenvironmen tally ir re‐
sponsible disposal
00BBDispose of operating fluids in an envi‐
ro nmentally responsible manner.
Operating fluids include thefo llowing:
RFu els
RLubricants
RCoolant
RBrake fluid
RWi ndshield washer fluid
RClimate cont rol sy stem refrigerant
Only use products app rove dby Mercedes-Benz.
Damage caused bythe use of products on the
ve hicle that ha venot been appr oved is not cov‐
ered bythe Mercedes-Benz warranty or goodwill
ge stures.
Yo u can identify operating fluids appr ovedby
Mercedes-Benz bythefo llowing insc ript ion on
th e conta iners:
RMB-Freigabe (e.g. MB-Fr eigabe 229.51)
RMB-Approval (e.g. MB-App rova l 229.51) Fu
rther information on appr oved operating flu‐
ids:
Rin the Mercedes-Benz Specifications for
Operating Fluids at http://be vo.mercedes-
benz.com (byen tering the designation)
Rin the Mercedes-Benz Specifications for
Operating Fluids in the Mercedes-Benz BeVo
app (by entering the designation)
Rat a qualified specialist workshop
0071
WARNING Risk offire and explosion
caused byfuel
Fu els are highly inflammable.
00BBYou must avoidfire , open flames, creat‐
ing spar ksand smoking.
00BBBefore refueling, switch off the engine
and, if ins talled in your vehicle, thest a‐
tionary heater.
0071 WARNING Risk of injury from fuel
Fu els are poisonous and harmful to your
health
Te ch nical da ta387

00BBDo not swallow fuel or let it come into
contact withskin, eyes or clo thing.
00BBDo not inhale fuel vapors.
00BBKe ep children away from fuel.
If yo u or other people come into contact with
fuel, obser vethefo llowing:
00BBImmediately rinse fuel off your skin wit h
soap and water.
00BBIf fuel comes into contact with your
ey es, immediately rinse them thor‐
oughly with clean water.Seek medical
attention immediately.
00BBIf yo u sw allow fuel, seek medical atten‐
tion immediatel y.Do not induce vomit‐
ing.
00BBChange immediately out of clo thing that
has come into con tact wi thfuel.
Fuel
Information on fuel grades forve hicles with
a ga soline engine
Obser vethe no tes on operating fluids
(
→page 387).
0075 NO
TEDama gecaused bythe wrong fuel
Even small amounts of the wrong fuel could
re sult in damage tothe fuel sy stem, the
engine and the emission control sy stem.
00BBOnly refuel with lo w-sulfur premium
grade fuel.
This fuel may contain up to10 %ethanol.
Yo ur vehicle is suitable for use with E10 fuel.
Do not refuel using:
RDiesel
RE15, E85, E100
RGasoline containing me thanol (M15, M30,
M85, M100)
RGasoline with additives con taining me tal
If yo u accidenta llyrefuel with the wrong fuel:
00BBDo not switch the ignition on.
00BBConsult a qualified specialist workshop.
Ifth eav ailable fuel is not suf ficiently low in sul‐
fur, this can produce unpleasant odors.
Only refuel with fuel that has at least the octane
number specified in the instruction label in the
fuel filler flap (
→page 143).
If yo uwa nt maximum engine output from
th e engine: onlyrefuel using unleaded premium
grade gasoline with at least 91AKI/95 RON.
As a temp orary measure, if there commended
fuel is not available, you may also refuel with
unleaded regular gasoline with an octane num‐
ber of at least 87AKI/91 RON. This ma yre duce
engine output and increase fuel consum ption.
Ne verre fuel using gasoline with an even lo wer
RO N.
388
Tech nical da ta