2017 MERCEDES-BENZ SLC-Class engine

The vehicle will then use very little energy, thus
conserving battery power.
If the power supply has been interrupted, e.g. ifyou reconnect the battery, you will have to:
Rreset the function for automatically folding
the exterior mirrors in/out by folding the mir-
rors out once (
Ypage 89)
Rset the clock (see the Digital Operator's Man-
ual)
On vehicles with amultimedia system, the
time is set automatically.
Charging the battery
GWARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is a risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do not lean over abattery.
GWARNING
Battery acid is caustic. There is arisk of injury.
Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean over
the battery. Keep children away from batter-
ies. Wash away battery acid immediately with
plenty of clean water and seek medical atten-
tion.
GWARNING
Ad ischarged battery can freeze at tempera-
tures below freezin gpoint. When jump-start-
ing the vehicle or charging the battery, gases can escape from the battery. There is arisk of
an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
!Only use battery chargers with amaximum
charging voltage of 14.8 V.
!Only charge the battery using the jump-
starting connection point.
The jump-starting connection point is in the
engine compartment. If the indicator/warning lamps do not light up at
low temperatures, it is very likely that the dis-
charged battery has frozen. In this case, you
may neither charge the battery nor jump-start
the vehicle. The service life of
athawed-out bat-
tery may be shorter .The starting characteristics
can be impaired, particularly at low tempera-
tures. Have the thawed-out battery checked at a
qualified specialist workshop.
Read the battery charger's operating instruc-
tions before charging the battery.
XOpen the hood.
XConnectt he battery charger to the positive
terminal and ground point in the same order
as when connectin gthe donor battery in the
jump-starting procedure (
Ypage 249).
248Battery (vehicle)
Breakdown assistance

Jump-starting
For the jump-starting procedure, use only the jump-starting connection point in the engine com-
partment,consisting of apositive terminal and aground point.
GWARNING
Battery acid is caustic. There is arisk of injury.
Avoid contact with skin, eyes or clothing. Do not inhale any battery gases. Do not lean over the
battery. Keep children away from batteries. Wash away battery acid immediately with plenty of
clean water and seek medical attention.
GWARNING
During charging and jump-starting, explosive gases can escape from the battery. There is arisk
of an explosion.
Particularly avoid fire, open flames, creating sparks and smoking. Ensure there is sufficient ven-
tilation while charging and jump-starting. Do not lean over abattery.
GWARNING
During the charging process, abattery produces hydrogen gas. If ashort circuit occurs or sparks
are created, the hydrogen gas can ignite. There is arisk of an explosion.
RMake sure that the positive terminal of aconnected battery does not come into contact with
vehicle parts.
RNever place metal objects or tools on abattery.
RIt is important that you observe the described order of the battery terminals when connecting
and disconnecting abattery.
RWhen jump-starting, make sure that the battery poles with identical polarity are connected.
RIt is particularly important to observe the described order when connecting and disconnecting
the jumper cables.
RNever connect or disconnectt he battery terminals while the engine is running.
GWARNING
Ad ischarged battery can freeze at temperatures below freezing point. When jump-starting the
vehicle or charging the battery, gases can escape from the battery. There is arisk of an explosion.
Allow the frozen battery to thaw out before charging it or jump-starting.
!Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter could be
damaged by the non-combusted fuel.
If the indicator/warning lamps do not light up at low temperatures, it is very likely that the dis-
charged battery has frozen.Int his case, you may neither charge the battery nor jump-start the
vehicle. The service life of athawed-out battery may be shorter. The starting characteristicsc an be
impaired, particularly at low temperatures. Have the thawed-out battery checked at aqualified
specialist workshop.
Jump-starting249
Breakdown assistance
Z

Do not start the vehicleusing arapid charging device. If your vehicle's battery is discharged, the
engine can be jump-started froma nothervehicleorf romas econd battery using jumpe rcables.
Observe the following points:
RThe battery is not accessible in al lvehicles. If the othe rvehicle's battery is not accessible ,jump-
start the vehicl eusing asecond battery or ajump-starting device.
RYo um ayonl yjump-star tthe vehicl ewhent he engine and exhaust system ar ecold.
RDo not start the engine if the battery is frozen. Let the battery thawf irst.
ROnlyjump-star tfromb atteries with a12Vvoltagerating.
ROnlyu sejumpe rcable swhich have asufficient cross-sectio nand insulate dtermina lclamps.
RIf the battery is full ydischarged, leav ethe battery thati sbeing used to jump-star tconnected for
af ew minute sbefor ea ttempting to start. Thi scharge sthe battery slightly.
RMake sure thatt he two vehicles do not touch.
Make sure that:
RThe jumpe rcable sarenot damaged.
RBar eparts of the termina lclamp do not come into contact with othe rmeta lparts whil ethe jumper
cable sareconnected to the battery.
RThe jumpe rcable scanno tcome into contact with parts which can mov ewhent he engine is
running ,suc hast he V-bel tpulle yort he fan.
XSecure the vehicl ebyapplyingthe electri cparkin gb rake.
XShift the transmission to position P.
XMake sure thatt he ignition is switched off .All indicator lamps in the instrument cluster must be
off .W henu sing the SmartKey, tur nthe SmartKeytop osition0in the ignition lock and remove it
(
Ypage 115).
XSwitch off al lelectrical consumers ,e.g.r ea rw indo wd efroster ,lighting, etc.
XOpen the hood.
Positio nnumber Bidentifie sthe charge dbattery of the othe rvehicl eorane quivalen tjump-starting
device.
XSlide cover :of positive terminal ;in the direction of the arrow.
XConnect positive terminal ;on your vehicl etopositive terminal =of donor battery Busing the
jumpe rcable ,alway sbegin with positive terminal ;on your ow nvehicl efirst.
XStar tthe engine of the donor vehicl eand runitati dlingspeed.
250Jump-starting
Breakdow nassistance

XConnect negative terminal?of donor battery Bto ground point Aof your vehicle usingt he
jumper cable, connecting th ejumper cabl etobattery of other vehicle Bfirst.
XStart th eengine.
XBefore disconnecting th ejumper cables, let th eenginer un for several minutes.
XFirst,r emove th ejumper cables from ground point Aand negative terminal ?,thenf romp os-
itive clamp ;and positiv etermi nal=.B egineach tim eatthecontact sonyour own vehicle first.
XClose cover :of positiv etermi nal;after rem ovingthe jumper cables.
XHav ethe battery checked at aqualified specialist workshop.
Jump-starting isno tc onsid ered to beanorma loperatin gcondition.
iJumpe rcables and further informatio nregardin gjump-startin gcan be obtaine datanyqualif ied
specialist workshop.
Towingand tow-starting
Important safety notes
GWAR NING
When to wingor tow-startin ganother veh icle
and its weightisg reatertha nt he permis sible
gross weightofy our vehicle,the :
Rthet ow ing eye could detach itself
Rthev ehicle/t railercom binatio ncouldroll-
over.
Thereisar iskofana cciden t.
When to wingor tow-startin ganother veh icle,
its weights hould notbegreatertha nt he per-
mis sible gross weightofy our vehicle.
Detail sonthepermis siblegross veh icleweight
of your veh iclecan befoun dont heveh icle iden -
tification plate(
Ypage 283).
!When Activ eBrake Assist,D istance Pilot
DI ST RONICort heHOLD function are activa-
te d, thev ehicle brakes automaticall yincer-
tain situations.
To avoid damag etotheveh icle,deactivate
these systems inthef ollowin gors imilar sit-
uations:
Rwhen towing th evehicle
Rinthec ar wash
!Only secure th etow ropeort owbar at the
to wing eyes. Otherwise, th evehicle could be
damaged.
!Do no tuse th etow ing eye for recovery, th is
could damag ethe veh icle.Ifind oubt,recover
th ev ehicle withac rane.
!When to wing,pull away slowlya nd
smoothly. Ifth et ractive power is to ohigh,t he
vehicle scould be damaged.
!Do no ttow withsling-type equipment. This
could damag ethe vehicle.
!When to wingvehicle swithK EYLESS-GO,
use th ekeyins tead of th eStart/S topb utton.
Otherwise, th eautomat ictransmission may
shifttop ositionPwhen th edriver' sorf ront-
passenger door are opened, whichcould lead
to damag etothetransmission.
!Makes ure that th eelectr icparking brakei s
released. If th eelectr icparking brak eisfaulty,
vis itaq ualified specialist workshop.
!The vehicle can betowed amaximum of
30 mile s(50km). The towing speedof30m ph
(50 km/h) must no tbeexceeded.
If th evehicle has to be towed mor ethan
30 mile s(50km) ,the entire vehicl emustb e
raised and transported.
!If you to wortow-star tanother vehicle ,its
weightm ust notexceed th emaximum per-
missible gross vehicle weightofy our vehicle.
It is bette rtohave th evehicle transported than
to have it towed away.
The automatic transmission must be in position
N when th evehicle is beingt owed.
The battery must be connecte dand charged.
Otherwise, you:
Rcanno tturnt he SmartKey to position 2in the
ignition lock.
Rcanno tshiftt heautomatic transmission to
position N.
Disarm th eautomatic lockin gfeature before the
vehicle is towed (
Ypage 173). You coul dother-
Towing and tow-starting251
Breakdown assistance
Z

Before changingafuse
XSwitch off the engine.
XSwitch off al lelectrical consumers.
XMake sure thatt he ignition is switched off
(Ypage 115).
or
XWhe nusing the SmartKey, turn the SmartKey
to position 0in the ignition lock and remove it
(
Ypage 115).
XSecure the vehicl eagain st rolling away
(Ypage 131).
All indicator lamps in the instrument cluster
must be off.
The fuses are locate dinvarious fus eboxes:
RFus eboxin the engine compartment on the
left-hand side of the vehicle, when viewe din
the direction of travel
RFus eboxin the trunk
Fuse bo xinthe engine compartment
i
Observ ethe "Important safety notes "sec-
tio n(Ypage 253).
GWARNING
Whe nthe hoo disopena nd the windshield
wipers are set in motion, yo ucan be injured by
the wipe rlinkage. There is ariskofi njury.
Alway sswitch off the windshield wipers and
the ignition before opening the hood.
XMake sure thatt he windshield wipers are
turne doff.
XOpe nthe hood.
XUse adry cloth to remove any moisture from
the fus ebox.
XTo open: open clamps ;.
XRemove fuseboxcover :forwards.
XTo close: check whethe rthe sea lislying cor-
rectl yinc over:.
XInsert cover :at the rea rofthe fus eboxinto
the retainer.
XFol dd ownc over :and close clamps ;.
XClose the hood.
Fuse boxinthe trunk
i
Observ ethe "Important safety notes "sec-
tio n(Ypage 253).
The fus eboxis locate dinthe trunk behind the
partition covering.
XOpe nthe trunk lid.
XTo open: release cover :on the right and
left-hand side swithaf lato bject.
XOpe ncover :downward sinthe direction of
the arrow.
254Fuses
Breakdo wn assis tance

An arrow on the sidewall of the tire indicates its
correct direction of rotation.
Storingwheels
Store wheels thata renot being used in acool,
dry and preferably dark place .Protect the tires
from oil, grease, gasoline and diesel.
Mounting awheel
Preparin gthe vehicle
XStop the vehicl eonsolid,non-slippery and
level ground.
XApply the electri cparking brake manually.
XBring the front wheels into the straight-ahead
position.
XShift the transmission to position P.
XSwitch off the engine.
XVehicles withoutKEYLESS -GO:remove the
SmartKeyf rom the ignition lock.
XVehicles with KEYLESS-GO: open the driv-
er' sd oor.
The vehicl eelectronics now have status 0.
Thi sist he same as the SmartKeyh aving been
removed.
XVehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(
Ypage 115).
XIf included in the vehicl eequipment ,remove
the tire-change tool kit from the vehicle.
XSafeguar dthe vehicl eagain st rolling away.
iDue to difference sinvehicleequipment ,not
al lv ehicles ar eequippe dwithat ire-change
tool kit. For informatio nonwhich tool sare
required to perfor mawheelchange on your
vehicle, consult an authorize dMercedes-
Benz Center.
Necessary tire-changing tool scan include, for
example:
RJack
RWheel chock
RLugw rench
Securin gthe vehicle to preven titfrom
rolling away
If your vehicl eisequippe dwithaw heelchock, it
can be found in the tire-change tool kit
(
Ypage 241).
The folding whee lchoc kisana dditional safety
measure to prevent the vehicl efrom rolling
away ,for exampl ewhenc hanging awheel .
XFoldb othp late su pwar ds:.
XFol do utlowe rplate ;.
XGuid ethe lugs on the lowe rplate full yinto the
openings in base plate =.
XPlace chocks or othersuitabl eitems under
the front and rea rofthe whee lthati sdiago -
nally opposite the whee lyou wish to change.
Raisin gthe vehicle
GWARNING
If yo udon ot positio nthe jack correctl yatthe
appropriate jacking point of the vehicle, the
jack could tip ove rwitht he vehicl eraised.
There is ariskofi njury.
Onlyp ositiont he jack at the appropriate jack-
ing point of the vehicle. The base of the jack
Changin gawheel275
Wheel sand tires
Z

must be positioned vertically, directly under
the jacking point of the vehicle.
!The jack is designed exclusively for jacking
up the vehicleatt he jacking points. Other-
wise ,you rv ehiclec ould be damaged.
Observe the following when raising the vehicle:
RTo rais ethe vehicle, only use the vehicle-spe-
cific jack that has been tested and approved
by Mercedes-Benz. If used incorrectly, the
jack could tip over with the vehicler aised.
RThe jack is designed only to raiseand hold the
vehiclef oras hort time while awheelisb eing
changed. It must not be used for performing
maintenance work under the vehicle.
RAvoid changing the whee lonuphill and down-
hill slopes.
RBefore raising the vehicle, secure it from roll-
ing awa ybyapplying the parking brake and
inserting whee lchocks. Do not disengage the
parking brake whil ethe vehicleisr aised.
RThe jack must be placed on afirm, flat and
non-slip surface. On aloose surface, alarge,
flat, load-bearing underlay must be used .Ona
slippery surface, anon-slip underlay must be
used ,e.g. rubber mats.
RDo not use wooden blocks or similar objects
as ajack underlay.O therwise, the jack wil lnot
be abl etoachieve its load-bearing capacity
due to the restricted height.
RMake sure that the distance betwee nthe
underside of the tires and the ground does not
exceed 1.2 in (3 cm).
RNever place you rhands and feet under the
raised vehicle.
RDo not lie under the vehicle.
RDo not start the engine when the vehiclei s
raised.
RDo not open or close adoor or the trunk lid
when the vehicleisr aised.
RMake sure that no persons are present in the
vehiclewhen the vehicleisr aised.
XUsing lug wrench:,loosent he bolts on the
whee lyou wish to change by abou tone full
turn. Do not unscrew the bolts completely.
The jacking points are located just behind the
front whee lhousings and just in front of the rear
whee lhousings (arrows).
Vehicles with AMG equipment: the vehicle
has covers installed to protect the vehicleb ody
next to the jacking points on the outer sills.
XFold cover ;upwards.
276Changing awheel
Wheel sand tires

Information regardingtechnicald ata
i
The dat astate dh eres pecifically refers to a
vehicl ewiths tandard equipment. Consult an
authorize dMercedes-Ben zCente rfor th e
dat afor all vehicl evariants and trim levels.
Vehicle electronics
Tampering with th eenginee lectron-
ics
!
Only hav eworkc arried out on th eengine
electronics and it sassociated parts, suc has
control units, sensors, actuating component s
and connecto rleads ,ataq ualified specialist
workshop. Vehicl ecom ponent smay other -
wise wear mor equickly and th evehicle's
operating permit may be invalidated.
Installing two-way radio sand mobile
phones (RF transmitters)
GWARNIN G
The electromagneti cradiation from modifie d
or incorrectl yretrofitte dRF-transmitters can
interfere wit hthe vehicl eelectronics .This can
compromise th eoperational safet yofthe
vehicle. Ther eisariskofana ccident.
You should hav eall wor ktoe lectrical and
electronic equipmen tcarried out at aqualified
specialist workshop.
GWARNIN G
The electromagneti cradiation from incor-
rectl yoperate dRFtransmitters can interfere
wit hthe vehicl eelectronics ,for example:
Rif th eRFt ransmitte risnotconnecte dwith
an exterio rantenna
Rthee xter iora ntenna has been installed
incorrectl yorisnotalow-reflection typ e
This can compromise th eoperational safet y
of th evehicle. Ther eisariskofana ccident.
Hav ethe low-reflection exterio rantenna
mounte dataqualified specialist workshop.
When operating RF transmitters in th evehi-
cle ,always connec tthe mw itht he low-reflec -
tion exterio rantenna.
!The operating permit may be invalidated if
th ei nstruction sfor installation and use of RF
transmitters are no tobserved.
In particular, th efollowin gconditi onsm ust be
complied with:
Ronly approve dwavebands may be used.
Robserv ethe maximum permissible output
in these wavebands.
Ronly approve dantenna position smay be
used.
Excessiv elevels of electromagneti cradiation
may caus edamag etoyour healt hand th ehealt h
of others. Using an exterio rantenna takes int o
accoun tcurren tscientific discussion srelating
to th epossible healt hhazards that may result
from electromagneti cfields.
The followin gantenna position smay be used if
RF transmitters hav ebeen properly installed:
Approved antenna position s
:
Rear fender
iOn th erear fenders, it is recommended to
position th eantenna on th eside of th evehicl e
closes ttothecenter of th eroad .
Use th eTechnical Specification ISO/TS 2160 9
when retrofitting RF transmitters (Road Vehicles
-E MC guidelines for installation of aftermarket
radi ofrequency transmitting equipment) .
Observ ethe legal requirements for accessory
parts.
If your vehicl ehas installation sfor two-way radi o
equipment, use th epower suppl yorantenna
connection sintended for use wit hthe basic wir-
ing .Bes uretoo bservethe manufacturer' sSup-
plemen twhen installing.
282Vehicle electronics
Technical data