engine MERCEDES-BENZ C-Class COUPE 2017 CL205 Owner's Manual

Information on the type of service and service
intervals (see the separate Maintenance Book-
let).
You can obtain further information from an
authorized Mercedes-Benz Center or at
http://www.mbusa.com (USA only).
iThe ASSYST PLUS service interval display
does not show any information on the engine
oil level.O bserve the notes on the engine oil
level (
Ypage 288).
The multifunction display shows aservice mes-
sage for several seconds, e.g.:
RService AinXXD ays
RServiceADue
RService AOverdue by XX Days
Depending on the operating conditions of the
vehicle,t he remaining time or distance until the
next service due date is displayed.
The letter A
orB,possibly in connection with a
number or another letter, indicates the type of
service. A
stands for aminor service and Bfor a
major service.
You can obtain further information from an
authorized Mercedes-Benz Center.
The ASSYST PLUS service interval display does
not take into account any periodsoft ime during
which the battery is disconnected.
Maintaining the time-dependent service sched-
ule:
XNote down the service due date displaye din
the multifunction display before disconnect-
ing the battery.
or
XAfter reconnecting the battery, subtract the
battery disconnection periodsf rom the ser-
vice date shown on the display.
Hiding aservicem essage
XPress the aor% button on the steering
wheel.
Displaying servic emessages
XSwitch on the ignition.
XUse ò on the steering wheel to call up the
list of menus.
XPress 9or: on the steering wheel to
select the Servicemenu and confirm with
a.
XPress 9or: on the steering wheel to
select the ASSYST PLUSsubmenu and con-
firm with a.
The service due date appears in the multi-
function display.
Information about Service
Resetting the ASSYST PLUS service
interval display
!If the ASSYST PLUS service interval display
has been inadvertently reset, this setting can
be corrected at aqualifieds pecialist work-
shop.
Have service work carried out as describedi n
the Maintenance Booklet. This may otherwise
leadtoi ncreased weara nd damage to the
major assemblies or the vehicle.
Aq ualifieds pecialist workshop, e.g. an author-
ized Mercedes-Benz Center, wil lreset the
ASSYST PLUS service interval display after the
service work has been carried out. You can also
obtain further information on maintenance
work, for example.
Special servic erequirements
The specifiedm aintenance interval takes only
the normal operation of the vehicle into
account. Under arduous operating conditions or
increased load on the vehicle,m aintenance
work must be carried out more frequently, for
example:
Rregular city driving with frequent intermediate
stops
Rif the vehicle is primarily used to travel short
distances
Ruse in mountainou sterrain or on poor road
surfaces
Rif the engine is often left idling for long periods
Under these or similar conditions, have, for
example ,the air filter, engine oil and oil filter
replaced or changed more frequently. Under
arduous operating conditions, the tires must be
checked more often. Further information can be obtained at aqualifieds pecialist workshop, e.g.
an authorized Mercedes-Benz Center.
ASSYST PLUS291
Maintenancea nd care
Z

when theengine is switche doff or at very
low speeds.O therwise, when in transmis-
sion position Dor Rthea utomatic trans-
mission will automatically switch to park
position Pand blockt hewheels.
ROperatin gwith th eStart/Stop button:
Do not open th edriver's door when the
engine is switche doff or at veryl ow
speeds.O therwise, when in transmission
position Dor Rth ea utomatic transmission
will automatically switch to park position P
and blockt hewheels.
Observe th efollowing to makes ure that the
automatic transmission stays in position Nneu-
tral:
Operatin gwith th eSmartKey and th eStart/
Stop button:
XMake sure that th eignitio nisswitche don.
XMake sure that th evehicle is stationary.
XDepress and hold th ebrakep edal.
Operatin gwith th eStart/Stop button only:
XEngage park position P.
XRelease thebrakep edal.
XRemoveS tart/Stop button fromi gnitionlock
(Ypage 131).
XInsert th eSmartKey int othe ignitio nlock.
XSwitch on th eignition.
XDepress and hold th ebrakep edal.
Operatin gwith th eSmartKey and th eStart/
Stop button:
XShif tton eutral N.
XRelease th ebrakep edal.
XRelease th eelectric parking brake, if neces-
sary.
XSwitch off th eignitio nand leave th eSma rtKey
in th eignitio nlock.
You can wash th evehicle in an automatic car
wash fromt heverys tart.
If th evehicle is veryd irty, pre-wash it bef

ore
cleaning it in an automatic car wash.
After using an automatic car wash, wipe off wax
fromt hewindshield and th ewiper blades. This
will prevent smearsa nd reducewiping noises
caused by residue on th ewindshield.
Washing by hand
In some countries, washingbyh and is only
allowed at specially equipped washingb ays.
Observe th elegal requirements in each country.
XDo not use hot water and do not wash the
vehicle in directs unlight.
XUseasofts ponge to clean.
XUse amild cleaning agent, such as acar
shampoo approved by Mercedes-Benz.
XThoroughly hose down th evehicle with agen-
tle jet of water.
XDo not pointt hewater jet directly towards the
air inlet.
XUse plenty of water and rinse out th esponge
frequently.
XRinse th evehicle with clean water and dry
thoroughly with achamois.
XDo not let th ecleaning agentd ry on thepaint-
work.
Carefull yremove all deposits of road salt as
soon as possible when driving in winter.
Power washers
GWARNING
The water jet fromac ircular jet nozzle (dirt
blasters) can cause invisible exterior damage
to th etires or chassis components. Compo-
nents damaged in this way may fail unexpect-
edly. Thereisar isk of an accident.
Do not use power washersw ith circular jet
nozzles to clean th evehicle. Have damaged
tires or chassis component sreplaced imme-
diately.
!Always maintain adistanc eofatl east
11.8 in (30 cm) between th evehicle and the
power washer nozzle. Information about the
correctd istanceisavailable fromt heequip-
mentm anufacturer.
Move th epower washer nozzle aroundw hen
cleaning your vehicle.
Do not aim directly at any of th efollowing:
Rtires
Rdoor gaps, roof gaps, joints, etc.
Relectrical components
Rbattery
Rconnectors
Care293
Maintenance and care
Z

Cleaning themirror turn signals
!Only use cleanin gagents or cleanin gcloths
that are suitable for plastic lenses.U nsuitable
cleanin gagents or cleanin gcloth scould
scratch or damag ethe plastic lenses of the
mirror tur nsignals.
XClean th eplastic lenses of th emirror tur nsig-
nals in th eexteri or mirror housing usingaw et
sponge and mild cleanin gagent, e.g.
Mercedes-Ben zcar shampoo or cleaning
cloths.
Cleaning th esensors
!If you clean th esensorsw ithapower
washer, mak esure that you keep adistance
of at least 11.8 in (30 cm)between the vehicl e
and th epower washer nozzle. Information
about th ecorrec tdistanc eisavailabl efrom
th ee quipment manufacturer.
XClean sensors :of th edriving systems with
water, car shampoo and asoftc loth.
Cleaning th erearv iew camera and 360°
camera
!Do no tclean th ecamera lensa nd thearea
aroun dthe rear view camera or 360°camera
with ahigh-pressurew aterjet.
XMakes ure that th evehicle is stationar yand
that th eSmartKey is in position 2in th eigni-
tio nlock.
XOpen th ecamera cover for cleanin gvia the
multimedia system (see th eseparate operat-
ing instructions).
XTo clean th ecamera: use clean wate rand a
softc loth to clean camera lens :.
360°camera: if you driveatspeeds above
20 mph (30 km/h) or with th eSma rtKey in posi-
tion 0or 1in th eignition lock, th ecover of the
360° camera closes automatically.
Cleaning th eexhaust pipes
GWARNING
The exhaust tail pipe and tail pipe trim can
become ver yhot.Ify ou com eintoc ontact
with these part softhevehicle ,you coul dburn
yourself. Thereisar isk of injury.
Always be particularly careful aroun dthe
exhaust tail pipe and th etail pipe trim. Allow
these component stocooldown before touch-
ing them.
!Do no tclean th eexhaust pipe with acid-
based cleanin gagents ,suchasb athroom
cleaner or wheel cleaner.
!Mercedes-AM Gvehicle swith black exhaust
pipes:t heblack-chrome tailpipe finishers
shouldn otbe polished with achrom epolish.
They will otherwise lose their black sheen. For
optimal care, th efaceplates shouldber ubbed
with alightly oiled cloth after everyc ar wash.
Commercially availabl eengine and car eoils
are suitable for this.
For heavier soiling, you can apply afinep aint-
work polishw itham icrofiber cloth .Remove
th ee xcess polishr esidue after polishing.
296Care
Maintenance and care

XSwitch off the engine.
XRemove the SmartKey from the ignition lock.
or, in vehicles with KEYLESS-G Ostart-function
or KEYLESS ‑GO
XOpenthe driver' sdoor.
The on-board electronics now have status 0.
Thi sist he same as the SmartKey having been
removed.
XRemove the Start/Sto pbutton from the igni-
tion lock (Ypage 131).
XMake sure that the engine canno tbes tarted
via your smartphone (Ypage 134).
XMake sure that the passenger sare not endan-
gered as they do so. Make sure that no one is neart he danger are awhile awheel is being
changed .Anyone wh oisnot directl yassisting
in the wheel change should, for example,
stand behind the barrier.
XGe toutof the vehicle. Paya ttention to traffic
conditions when doing so.
XClose the driver' sdoor.
MOExtended tires( tires with run-flat
properties)
General notes
With MOExtended tire s(tires with run fla tchar-
acteristics) ,you can continu etodrive your vehi-
cle eve nifthere is atotal loss of pressure in one
or more tires. The affected tire mus tnot show
any clearl yvisible damage.
You can recognize MOExtended tire sbythe
MOExtended marking which appears on the
sidewal lofthe tire .You will find this marking
next to the tire size designation, the load-bear-
ing capacity and the speed index (
Ypage 330).
MOExtended tire smay 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 warnin gmessage appears
in the multifunctio ndisplay:
Robserve the instructions in the display mes-
sages (Ypage 241).
Rcheck the tire for damage.
Rif driving on, observe the following notes.
The driving distance possible in run-flat mod eis
approximately 50 miles (80 km )whent he vehi-
cle is partiall ylad en. Whe nthe vehicl eisfully
laden it is approximately 19 miles (30 km). In addition to the vehicl
eload, the driving dis-
tance possible depends upon:
Rvehicl espeed
Rroa dcondition
Routsid etemperature
The driving distance possible in run-flat mode
may be reduce dbyextremedriving conditions
or maneuvers, or it can be increased through a
moderate style of driving.
The driving distance possible in run-flat mod
eis
co

unted from the moment the tire pressure loss
warning appears in the multifunction display.
You mus tnot excee damaximum speed of
50 mph (80 km/h).
Whe nreplacing one or al ltires, please observe
the following specifications for your vehicle's
tires:
Rsize
Rthe typ eand
Rthe "MOExtended" mark
If at ire hasg one flatand canno tbereplaced
with aMOExtended tire ,astandard tire may be
used as atemporary measure. Make sure that
yo uu sethe proper size and typ e(summer or
winter tire).
Vehicles equipped with MOExtended tire sare
not equipped with aTIREFIT kit at the factory. It
is therefore recommended that yo uaddit ionally
equip your vehicl ewithaT IREFIT kit if yo umount
tire sthat do not feature run-flat properties ,e.g.
winter tires. ATIREFIT kit may be obtaine dfrom
aq uali fied specialist workshop.
Important safety notes
GWARNING
Whe ndriving in emergency mode, the driving
characteristics deteriorate ,e.g. when corner-
ing, accelerating quickl yand when braking.
There is ariskofana ccident.
Do not excee dthe state dmaximum speed.
Avoi dabrup tsteering and driving maneuvers,
and driving ove robstacles (curbs ,potholes,
off-road). Thi sapplies in particula rtoaladen
vehicle.
Stop driving in emergency mod eif:
Ryouh earb anging noises.
Rthe vehicl estarts to shake.
Flat tire301
Breakdown assistance
Z

XPull the tire sealant bottle out of the tire infla-
tion compressor.
The filler hose remains attached to the tire
sealant bottle.
XDrive to the nearest qualified specialist work-
shop and have the tire changed there.
XHave the tire sealant bottle and the filler hosereplaced as soon as possible at aqualified
specialist workshop.
XHave the tire sealant bottle replaced every
four years at aqualified specialist workshop.
Battery (vehicle)
12 Vb attery –important safety notes
Special tools and expert knowledge are required
when working on the battery, e.g. removal and
installation .You should therefore have all work
involvin gthe battery carried out at aqualified
specialist workshop.
GWARNING
Work carried out incorrectly on the battery
can lead, for example, to ashort circuit and
thus damage the vehicle electronics. This can
lead to function restriction sapplying to
safety-relevant systems, e.g the lighting sys-
tem, the ABS (anti-loc kbraking system) or the
ESP
®(Electronic Stability Program). The oper-
ating safety of your vehicle may be restricted.
You could lose control of the vehicle, for
example:
Rwhen braking
Rin the event of abrupt steerin gmaneuvers
and/or when the vehicle's speed is not
adapted to the road conditions
There is arisk of an accident.
In the event of ashort circuit or asimilar inci-
dent, contact aqualified specialist workshop
immediately. Do not drive any further .You
should have all work involvin gthe battery car-
ried out at aqualified specialist workshop.
For further information about ABS and ESP
®,
see (Ypage 62) and (Ypage 67).
All vehicles except vehicles with alithium-
ion battery:
GWARNING
Electrostatic build-up can lead to the creation of sparks, which could ignite the highly explo-
sive gases of abattery. There is arisk of an
explosion.
Before handling the battery, touch the vehicle
body to remove any existin gelectrostatic
build-up.
The highly flammable gas mixture forms when
charging the battery as well as when jump-start-
ing.
Always make sure that neither you nor the bat-
tery is electrostatically charged. Abuild-up of
electrostatic charge can be caused, for exam-
ple:
Rby wearing clothin gmade from synthetic
fibers
Rdue to friction between clothin gand seats
Rif you push or pull the battery across the car-
pet or other synthetic materials
Rif you wipe the battery with acloth
GWARNING
During the charging process, abattery produ-
ces 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 a
connected battery does not come into con-
tact with vehicle parts.
RNever place metal object sortools on abat-
tery.
RIt is importan tthat you observe the descri-
bed order of the battery terminals when
connectin gand disconnectin gabattery.
RWhen jump-starting, make sure that the
battery poles with identical polarity are
connected.
RIt is particularly importan ttoobserve the
described order when connectin gand dis-
connectin gthe jumper cables.
RNever connect or disconnect the battery
terminals while the engine is running.
GWARNING
Battery acid is caustic. There is arisk of injury.
Battery (vehicle)305
Breakdown assistance
Z

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.
All vehiclese xcept vehiclesw ithalithium-ion battery:
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.
If, at low temperatures, the indicator lamps/warning lamps in the instrument cluster do not light up,
it is highly likely that the discharged 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.
All vehicles:
!Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter could be
damaged by the non-combusted fuel.
308Jump-starting
Breakdown assistance

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.
RAllv eh icle sexcept vehicle swithal ithium-io nbattery: do 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.
Rwhen the jumpe rcable sareconnected to the battery ,uninsulated sections of the termina lclamp
do not come into contact with othe rmetalsections.
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 131).
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 Aof 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.
Jump-starting309
Breakdow nassistance
Z

XStart the engine of the donorvehicl eand run it at idling speed.
XConnect negative terminal =of dono rbattery Bto ground point ?of your vehicl eusing the
jumper cable ,connecting the jumper cable to dono rbattery Bfirst.
XStart the engine.
XBefore disconnecting the jumper cables, le tthe engine run for several minutes.
XFirst, remove the jumper cable sfrom ground point ?and negative terminal =,then from pos-
itive clamp :and positive terminal ;.Begineacht ime at the contacts on your ownv ehiclefirst.
XClose cover Aof positive terminal :afte rremoving jumper cables.
XHave the battery checke dataqualified specialist workshop.
Jump-starting is not considered to be anorma loperating condition.
iJumpe rcable sand further information regarding jump-starting can be obtaine datany qualified
specialist workshop.
Towin gand tow-starting
Important safety notes
GWARNING
Functions relevant to safety are restricted or
no longer available if:
Rthe engine is not running.
Rthe brake system or the power steering is
malfunctioning.
Rthere is amalfunction in the voltag esupply
or the vehicle's electrical system.
If your vehicl eisbeing towed, much more
force may be necessary to stee rorbrake.
There is ariskofana ccident.
In such cases, us eatow bar. Before towing,
make sure that the steering move sfreely.
GWARNING
You can no longer stee rthe vehicl eifthe
steering wheel lock hasb eene ngaged .There
is ar iskofana ccident.
Alway sswitch off the ignition when towing the
vehicl ewithat ow cable or atow bar.
GWARNING
Whe ntowing or tow-starting another vehicle
and its weight is greate rthan the permissible
gross weigh tofyourv ehicle, the:
Rthe towing eyec ould detach itself
Rthe vehicle/trailer combination could roll-
over.
There is ariskofana ccident.
Whe ntowing or tow-starting another vehicle,
its weight shoul dnot be greate rthan the per-
missible gross weight of your vehicle.
Details on the permissible gross vehicl eweight
of your vehicl ecan be found on the vehicl eide n-
tification plate (
Ypage 343).
!Whe nCOLLISIONP REVENTION ASSIST
PLUS, DISTRONIC PLU Sorthe HOLD function
is activated, the vehicl ebrakes automatically
in certain situations.
To avoid damag etothe vehicle, deactivate
thes esystems in the following or similar sit-
uations:
Rwhen towing the vehicle
Rin the car wash
!Make sure that the electri cparking brake is
released .Ifthe electri cparking brake is faulty,
visit aquali fied specialist workshop.
!Secure the tow rop eortow ba rtothe towing
eyeo nly.Otherwise, the vehicl ecould
become damaged.
310Towinga nd tow-starting
Breakdown assistance

Noteson4 MATIC vehicles
!
Vehicle swith4 MATIC must not be towed
with eithe rthe front or the rea raxler aised, as
doing so will damage the transmission.
Vehicle swith4 MATIC maye ithe rbet owed away
with both axles on the ground or be loaded up
and transported.
If the vehicle' stransmission, front, or rea raxlei s
damaged, have the vehicl etransporte dona
truck or trailer.
In the even tofdamagetot he electrical sys-
tem: if the battery is defective, the automatic
transmission will be locked in position P.Tos hift
the automatic transmission to position N,you
must provide powe rtothe vehicle' selectrical
syste mint he same wa yaswhenj ump-starting
(
Ypage 308).
Have the vehicl etransporte donatransporte ror
trailer.
Tow-startin g(em ergency engine
starting)
!
Vehicle switha utomatic transmission must
not be tow-started .You could otherwis edam -
ag et he automatic transmission.
iYouc an find information on "Jump-starting"
under (Ypage 308).
Fuses
Important safety notes
GWARNING
If yo umanipulate or bridg eafaulty fuse or if
yo ur eplace it with afusew ithah igheramper -
age, the electric cable scould be overloaded.
This could resul tinafire. There is ariskofa n
accident and injury.
Alway sreplace faulty fusesw itht he specified
new fusesh avingthe correc tamperage.
Blown fusesm ustber eplaced with fusesoft he
same rating ,which yo ucan recognize by the
color and value. Th efuser ating sarelistedint he
fuse allocatio nchart.
Th efus ea lloc atio nchart is on the fuse bo xinthe
trunk (
Ypage 315). If
an ewly inserte dfusea lsob lows ,havet he
cause traced and rectifie dataqualified special-
is tw orkshop ,e.g.ana uthorized Mercedes-Benz
Center.
!Onl yusefusest hath aveb eena pproved for
Mercedes-Benz vehicles and which have the
correc tfus er ating for the systemc oncerned.
Otherwise, components or systems could be
damaged.
!Make sure tha tnomoisture can ente rthe
fuse bo xwhent he cover is open.
!When closing the cover, make sure tha titis
lying correctly on the fuse box. Moistur eseep-
ing in or dirt could otherwis eimpair theope
r-
ation of the fuses.
Th ef uses in your vehicl eserve to close down
faulty circuits .Ifafuse blows, al lthe compo-
nents on the circuit and their functions stop
operating.
Before changin gafuse
Observe the important safety notes
(Ypage 313)
XSwitch off the engine.
XSwitch off al lelectrica lconsumers.
XSecure the vehicl eagain st rolling away
(Ypage 152).
XRemov ethe SmartKeyf romthe ignition lock.
or, in vehicles with KEYLESS-GOs tart-function
or KEYLESS ‑GO
XOpen the driver's door.
Theo n-board electronics now have status 0.
This is the same as the SmartKeyh avingbeen
removed.
Th ed river’s door can be closeda gain.
All indicator lamps in the instrumen tcluster
must be off.
Th ef uses arel oc ated in variou sfuseb oxes:
RFuse bo xonthe driver's side of the dashboard
RFuse bo xinthe front-passenge rfootwell
RFuse bo xinthe engine compartment on the
driver's side
RFuse bo xunder the trunk floo ronthe right-
hand side of the vehicle, when viewed in the
directio noftravel
Fuses313
Breakdow nassistance
Z

Tire-mounting tools should not be used near
the valve. This could damage the electronic
components.
Only have tires changed ataqualified spe-
cialist workshop.
Always observe the instructions and safety
notes in the "Mounting awheel" section
(
Ypage 336).
The wear pattern sonthe front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before aclear wear pattern
has formed on the tires. Frontt ires typically
wear more on the shoulders and the rear tires in the center.
On vehicles that have the same size front and
rear wheels, you can rotatet he wheels accord-
ing to the intervals in the tire manufacturer's
warranty book in your vehicle documents. If no
warranty book is available, the tires should be
rotated every 3,000 to 6,000 miles (5,000 to
10,000k m).Earlier may be necessary, depend-
ing on the degree of tire wear. Do not change the
direction of wheel rotation.
Clean the contact surfaces of the wheel and the
brake disc thoroughly every time awheel is rota-
ted. Check the tire pressure and, if necessary,
restart the tire pressure loss warning system
(
Ypage 323) or the tire pressure monitor
(Ypage 325).
Direction of rotation
Tires with aspecified direction of rotation have
additional benefits ,e.g. if there is arisk of hydro-
planing. These advantages can only be gained if
the tires are installed corresponding to the
direction of rotation.
An arrow on the sidewall of the tire indicates its
correctd irection of rotation.
Storing wheels
Storewheels that are not being used in acool,
dry and preferably dark place. Protectt he tires
from oil, grease, gasoline and diesel.
Mounting awheel
Preparing the vehicle
XStop the vehicle on solid, non-slippery and
level ground.
XApply the electric parking brake manually.
XBring the front wheels into the straight-ahead position.
XShift the transmission to position P.
XMake sure that the vehicle level is set to "Nor-
mal" on vehicles with AIRMATIC(Ypage 172).
XSwitch off the engine.
XVehicles without KEYLESS-GO: remove the
SmartKey from the ignition lock.
XVehicles with KEYLESS-GO start-function
or KEYLESS-GO: open the driver's door.
The on-board electronics now have status 0.
This is the same as the SmartKey having been
removed.
XVehicles with KEYLESS-GO start-function
or KEYLESS-GO: remove the Start/Stop but-
ton from the ignition lock (
Ypage 131).
XMake sure that the engine cannot be started
via your smartphon e(Ypage 134).
XIf included in the vehicle equipment, remove
the tire-change tool kit from the vehicle.
XSafeguard the vehicle against rolling away.
Securing the vehicle to prevent it from
rolling away
If your vehicle is equipped with awheel chock,i t
can be found in the vehicle tool kit (Ypage 300).
The folding wheel chock is an additional safety
measure to prevent the vehicle from rolling
away,f or example when changing awheel.
336Changing awheel
Wheels and tires