2017 MERCEDES-BENZ SLC-Class key

XPark the vehicle onalevel surface.
Only check the coolant level when the vehicle is on alevel surface and the engine has cooled
down.
XTurn the SmartKey to position 2in the ignition
lock (Ypage 115).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (
Ypage 115).
XCheck the coolant temperature gauge in the
multifunction display.
The coolant temperature must be below
158 ‡(70 †).
XTurn the SmartKey to position 0(Ypage 115)
in the ignition lock.
XSlowly turn cap ;half aturn counter-clock-
wise to allow excess pressure to escape.
XTurn cap ;further counter-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the filler neck when cold, there is enough
coolant in coolant expansion tank :.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar =in the fuel filler
neck when warm, there is enough coolant in
expansion tank :.
XIf necessary, add coolant that has been tested
and approved by Mercedes-Benz.
XReplace cap;and turn it clockwise as far as
it will go.
For further information on coolant ,see
(
Ypage 287).
Windshield washer system
GWARNING
Certain components in the engine compart-
ment ,such as the engine, radiator and parts
of the exhaust system, can become very hot.
Workin ginthe engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the components described in the
following.
GWARNING
Windshield washer concentrate could ignite if it comes into contact with hot engine compo-
nentsort he exhaust system. There is arisk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
Example
XTo open: pull cap:upwards by the tab.
XAdd the premixed washer fluid.
XTo close: press cap :ontothe filler neck
until it engages.
If the washer fluid level drops below the recom-
mended minimum fluid level of 1USgal (1 liter),
am essage appears in the multifunction display
promptin gyou to add washer fluid (
Ypage 201).
Further information on windshield washer fluid/
antifreeze (
Ypage 288).
Overview of the engine compartment
Example: gasoline engine
:
Engine oil cap
;Oil dipstick
=Brake fluid reservoir
?Washer fluid reservoir
ACoolant expansion tank
234Overview of the engine compartment
Maintenance and care

XIf possible, bring the front wheelsinto the
straight-ahea dposition.
XSwitch off the engine.
XVehicles without KEYLESS-GO: remove the
SmartKey from the ignition lock.
XVehicles with KEYLESS-GO: open the driv-
er's door.
The on-board electronics now have status 0.
This is the same as the SmartKey having been
removed.
XVehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(
Ypage 115).
XMake sure that the passengers are not endan-
gered as they do so. Make sure that no one is near the danger area whileaw heel is being
changed. Anyone who is not directly assisting
in the wheel change should, for example,
stand behind the barrier.
XGet out of the vehicle.P ay attention to traffic
conditions when doing so.
XClos ethe driver's door.
MOExtended tires (tires with run-flat
properties)
General notes
With MOExtended tires (tires with run flat char-
acteristics), you can continue to drive you rvehi-
cle even if there is atotal loss of pressure in one
or more tires. The affected tire must not show
any clearl yvisible damage.
You can recognize MOExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You wil lfind this marking
next to the tire size designation, the load-bear-
ing capacity and the speed index (
Ypage 269).
MOExtended tires may only be used in conjunc-
tion with an active tire pressure loss warning
system or with an active tire pressure monitor.
If ap ressure loss warning message appears
in the multifunction display:
Robserve the instructions in the display mes-
sages (Ypage 196).
Rcheck the tire for damage.
Rif driving on, observe the following notes.
The driving distance possible in run-flat mode is
approximately 50 miles (80 km) when the vehi-
cle is partially laden and approximately 19 miles
(30 km) when the vehicle is full yladen. In addition to the vehicle load
,the driving dis-
tance possible depends upon:
Rvehicle speed
Rroad condition
Routsid etemperature
The driving distance possible in run-flat mode
may be reduced by extreme driving conditions
or maneuvers, or it can be increased through a
moderate style of driving.
The driving distance possible in run-flat mode is
counted from the moment the tire pressure loss
warning appears in the multifunction display.
You must not exceed amaximum speed of
50 mph (80 km/h).
When replacing one or all tires, please observe
the following specifications for you rvehicle's
tires:
Rsize
Rtype and
Rthe "MOExtended" mark
If at ire has gone flat and cannot be replaced
with aMOExtended tire, astandard tire may be
used as atemporary measure. Make sure that
you use the proper size and type (summe ror
winter tire).
Vehiclese quipped with MOExtended tires are
not equipped with aTIREFIT kit at the factory. It
is therefore recommended that you additionally
equi pyourvehicle with aTIREFIT kit if y
ou mount
tires that do not feature run-flat properties, e.g.
winter tires. ATIREFIT kit is available, for exam-
ple, from aqualifieds pecialist workshop.
Important safety notes
GWARNING
When driving in emergency mode, the driving
characteristics deteriorate, e.g. when corner-
ing, accelerating quickly and when braking.
There is arisk of an accident.
Do not exceed the stated maximum speed.
Avoid abrupt steering and driving maneuvers,
and driving over obstacle s(curbs, potholes,
off-road). This applies in particular to aladen
vehicle.
Stop driving in emergency mode if:
Ryou hear banging noises.
Rthe vehicle starts to shake.
242Flat tire
Breakdowna ssistance

XRemove filler hoseB and plug =from th e
botto msection of th etirei nflation compres-
sor housing .
XSlide theyellow filler hos econnector intothe
mounting on yellow cap Aof tire sealan tbot-
tl e : until th eplug engages.
XWit hthe sealing rings in front, slid eyellow cap
A of tire sealan tbottl e: intothe mounting
of tire inflation compressor ;.
The cap mus tengage in bot hhooks .
XRemove th ecap from valv eC on th efault y
tire.
XScrew filler hos eD onto th evalve.
XInser tplug =intothe cigarette lighte rsocke t
(Ypage 221) or int oa12Vpower socke tin
your vehicl e(Ypage 221).
XTurn theSma rtKey to position 1in th eignition
loc k(Ypage 115).
XPress on and off switch ?on th etirei nflation
compressor to ON.
The tire inflation compressor is switched on .
The tire is inflated.
First ,tires ealan tispumped int othe tire. The
pressur emay briefly ris etoapproximately
50 0k Pa(5.0b ar/7 3psi). Do not switch off th
etirei nflation com -
pressor during this phase .
XLet thetirei nflation compressor run for a
maximum of te nminutes. The tire should then
hav eattained apressur eofatl east 200kPa
(2. 0b ar/29 psi) .
If at irep ressur eof200 kPa( 2.0b ar/29 psi) is
achieved after amaximum of te nminutes, see
(
Ypage 245).
If at irep ressur eof200 kPa( 2.0b ar/29 psi) is
no ta chieved after amaximum of te nminutes,
see (
Ypage 244).
If tire sealan thas escaped, clean it off affecte d
areas as quickly as possible. Use plain water if
possible.
If your clothes are soiled wit htires ealant, hav e
them cleane dwithp erchloroethylen eatadry
cleane rassoo
nasp o
ssible.
Tire pressure not reached
Ifat irep ressur eof200 kPa(2.0 bar/29 psi) has
beena chieved after ten minutes:
XSwitch off the tire inflation compressor.
XUnscrew the filler hose from the valve of the
faulty tire.
Note that tire sealant may escap ewheny ou
unscrew the filler hose.
XVery slowly drive forwards or reverse approx- imately 30 ft (10 m).
XPump up the tire again.
After amaximu moften minutes ,the tire pres-
sure must be at least 200 kPa (2.0 bar/
29 psi).
GWARNING
If the required tire pressure is not reached
after the specified time, the tire is too badly
damaged. The tire sealant cannot repair the
tire in this instance. Damaged tires and atire
pressure that is too low can significantly
impair the vehicle's braking and driving char-
acteristics. There is arisk of accident.
Do not continue driving. Contact aqualified
specialist workshop.
244Flat tire
Breakdowna ssistance

Avoidcontact with skin, eyes or clothing. Do
not inhal eany battery gases .Donot lean over
the battery .Keepc hildren away from batter-
ies. Wash away battery aci dimmediatelyw ith
plenty of clean water and see kmedica latten-
tion.
HEnvironmental note
Batterie scontain dangerous
substances .Itisagainst the
la wtod ispose of them with
the householdr ubbish.They
must be collected separately and recycle dtoprotect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to aquali fied spe-
cialist workshop or aspecial
collectio npoint for used bat-
teries.
!Hav ethe battery checked regularly at a
qualified specialist workshop.
Observ ethe service intervals in the Mainte-
nance Bookle torcontact aquali fied specialist
workshop for more information.
!Alway shavew orkonb atteries carrie doutat
aq uali fied specialist workshop.S hould it, in
exceptionalc ircumstances ,beabsolutely
necessary to disconnect the 12-volt battery
yourself, observe the following:
Rsecur ethe vehicl etoprevent it from rolling
away.
Rswitch off the ignition.
Ralways disconnect the negative terminal
clamp first, followe dbythe positive termi-
nal clamp.
After the battery hasb eend isconnected ,the
transmission is locked in position P.
After the work hasb eend one, instal lthe bat-
tery and replace the cove rofthe positive ter-
mina lclamp firmly.
Compl ywiths afety precautions and take pro-
tective measures when handling batteries.
Risk of explosion.
Fire, open flames and smoking are
prohibited when handling the bat-
tery .Avoi dc reating sparks.
Battery aci discaustic. Avoi dcontact
with skin, eyes or clothing.
Wear suitabl eprotective clothing,
especially gloves, apron and face-
guard.
Rinse any aci dspillsimmediately
with clear water. Contact aphysician
if necessary.
Wear ey eprotection.
Kee pchildren away.
Observ ethisO perator' sManual.
For safety reasons ,Mercedes-Benz recom-
mend sthaty ouonlyu sebatteries which have
been teste dand approved for your vehicl eby
Mercedes-Benz. These batteries provide
increased impact protection to prevent vehicle
occupants from suffering aci dburns shoul dthe
battery be damaged in the event of an accident.
In order for the battery to achieve the maximum
possibl eservice life, it must always be suffi-
ciently charged.
Like othe rbatteries, the vehicl ebattery may
discharge ove rtime if yo udonot usethe vehicle.
In thisc ase, have the battery disconnected at a
qualified specialist workshop.Y oucan also
charge the battery with acharge rrecommended
by Mercedes-Benz. Contact aquali fied special-
is tw orkshop for furthe rinformation.
Hav ethe battery condition of charge checked
more frequentlyify ouuset he vehicl emainl yf or
short trip sorifyouleav eits tanding idle for a
lengthy period. Consult aquali fied specialist
workshop if yo uwishtol eave your vehicle
parked for alon gp eriodoft ime.
Remove the SmartKeyify oupark the vehicle
and do not require any electrical consumers.
Battery (vehicle)247
Breakdo wn assis tance
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

wise be locked out when pushingortowing the
vehicle.
Installing/removing th etowing eye
Installing th etowing eye
GWARNING
The exhaust tail pipe may be veryh ot.Therei s
ar isk of burnsw hen removingt herear cover.
Do not touc hthe exhaust pipe. Take particular
car ew hen removin gthe rear cover.
The bracket sfor th escrew-in towing eye are
located in th ebumpers. They are at th efront and
at th erear ,behindt hecovers.
XRemovet hetowing eye fromt hevehicle tool
kit (Ypage 241).
XPresst hemark on cover :inwards in the
directio nofthearrow.
XTake cover :off th eopening.
XScrew in th etowing eye clockwis easfar as it
will go and tighten it.
Removing th etowing eye
XUnscrew and remove th etowing eye.
XAttac hcover :to th ebumper and pressu ntil
it engages.
XPlace th etowing eye in th evehicle too lkit.
Towing avehicle with both axles on
th eg round
GWARNING
You can no longer steer th evehicle if the
steeringw heel lock has been engaged. There
is ar isk of an accident.
Always switch off th eignitio nwhen towing the
vehicle with atow cable or atow bar.
The automatic transmission automatically shifts
to position Pwhen you open th edriver's or front-
passenger door or when you remove th eSmart-
Key fromt heignitio nlock.
In ordertoe nsure that th eautomatic transmis-
sion stays in position Nwhen towing th evehicle,
you must observe th efollowing points:
XSwitch on th ehazar dwarning lamps
(Ypage 95).
XTurn th eSma rtKey to position 2in th eignition
lock.
On vehicles with KEYLESS-GO, use th eSma rt-
Key instead of th eStart/Stop button
(
Ypage 115).
XDepress and hold th ebrakep edal.
XShiftthe transmission to position N.
XRelease th ebrakep edal.
XRelease th eelectric parking brake.
XLeave th eSmartKey in position 2in th eigni-
tio nlock.
In ordertos ignalachange of directio nwhen
towing th evehicle with th ehazar dwarning
lamps switche don, use th ecombination switch
as usual. In this case ,only th eindicator lamps
for th edirectio noftravel flash.W hen you reset
th ec ombination switch, th ehazar dwarning
flashers start flashing again.
It is importan ttha ty ou observe th esafety
instructions when towing away your vehicle
(
Ypage 251).
Towing th evehicle with th ereara xle
raised
!
The ignitio nmust be switche doff if you are
towing th evehicle with th erear axle raised.
Interventio nbyESP
®could otherwise dam-
age th ebrakes ystem.
252Towing and tow-starting
Breakdown assistance

!Vehicles with automatic transmission must
not be towed with the rear axle raised. The
vehicle/trailer combination may otherwise
swerve or even roll over.
Transporting the vehicle
Vehiclesw ith automatic transmission
!When the vehicle is loadedf or transport, the
front and rear axles must be stationary and on
the same transportation vehicle. Positioning
over the connection point of the transport
vehicle is not permitted. The drive train may
otherwise be damaged.
All vehicles
!You may only secure the vehicle by the
wheels, not by parts of the vehicle such as
axle or steering components. Otherwise, the
vehicle could be damaged.
The towing eye can be used to pull the vehicle
onto atrailer or transporter for transporting pur-
poses.
XTurn the SmartKey to position 2in the ignition
lock.
XShift the transmission to position N.
As soon as the vehicleh as been loaded:
XPrevent the vehicle from rolling awayb y
applying the electric parking brake.
XShift the transmission to position P.
XTurn the SmartKey in the ignition lock to posi-
tion0and remove the SmartKey from the
ignition lock.
XSecure the vehicle.
Tow-starting (emergencye ngine
starting)
!
Vehicles with automatic transmission must
not be tow-started. You could otherwise dam-
age the automatic transmission.
You can find information on "Jump-starting" at
(
Ypage 249).
Fuses
Important safety notes
GWARNING
If you manipulate or bridge afaulty fuse or if
you replace it with afuse with ahigher amper-
age, the electric cables could be overloaded.
This could result in afire. There is arisk of an
accident and injury.
Alwaysr eplace faulty fuses with the specified
new fuses having the correct amperage.
Blown fuses must be replaced with fuses of the
same rating, which you can recognize by the
color and value.T he fuse ratings are listed in the
fuse allocation chart.
The fuse allocation chart is located in the vehicle
tool kit in the stowage compartment under the
trunk floor (
Ypage 241).
If an ewly inserted fuse also blows, have the
cause traced and rectified at aqualified special-
ist workshop, e.g. an authorized Mercedes-Benz
Center.
!Only use fuses that have been approved for
Mercedes-Benz vehicles and which have the
correct fuse rating for the system concerned.
Otherwise, componentsors ystems could be
damaged.
!Make sure that no moisture can enter the
fuse box when the cover is open.
!When closing the cover, make sure that it is
lying correctly on the fuse box. Moisture seep-
ing in or dirt could otherwise impair the oper-
ation of the fuses.
The fuses in your vehicle serve to close down
faulty circuits. If afuse blows, all the compo-
nentsont he circuit and their functions stop
operating.
Fuses253
Breakdown assistance
Z