Problem
Possible
causes/co nsequences and0050 0050
Solutions The
engine cannot be
started usingtheSmart-
Key. The
on-board voltageistoo low.
X Switch offnon- essential consumers, e.g.seat heating orinterior
lighting, andtrytostart theengine again.
If this does notwork:
X Check thestarter battery andcharge itifnecessary
(Y page 284).
or
X Jump-start thevehicle (Ypage 285).
or
X Consult aquali fiedspecialist workshop. The
engine cannot be
started usingKEYLE SS-
GO. TheSmartK eyisin
the vehicle. The
vehicle islocked.
X Unlock thevehicle andtrytostart thevehicle again. The
SmartK eybattery isdischarged ornearly discharged.
X Check theSmartK eybattery (Ypage 77)and replace itifneces-
sary (Ypage 77).
If this does notwork:
X Start yourvehicle withtheSmartK eyinthe ignition lock. There
isinterf erence fromapowerful sourceofradio waves.
X Start yourvehicle withtheSmartK eyinthe ignition lock. You
have lostaSmart-
Key. X
Have theSmartK eydeactivated ataqual ified specialist work-
shop.
X Report theloss immediately tothe vehicle insurers.
X Ifnecessary, havethelocks changed aswell. You
have lostthe
mechanical key. X
Report theloss immediately tothe vehicle insurers.
X Ifnecessary, havethelocks changed aswell. The
side windows can-
not beopened orclosed
using theconven ience
opening/c losingfea-
ture. The
SmartK eybattery isdischarged ornearly discharged.
X Check theSmartK eybattery (Ypage 77)and replace itifneces-
sary (Ypage 77). Doo
rs Import
antsafety notes G
WARNING
If children areleft unsupervised inthe vehi-
cle, they could:
R operate thevehicle's equipment Additionally,
childrencouldsetthe vehicle in
motion if,for example, they:
R release theparking brake
R shift theautomatic transmission outof
park position 005D
R start theengine
There isarisk ofan accident andinjury. Doo
rs
79Opening andclosing
Z
Corr
ectdriver 'sseat position G
WAR
NING
You couldlose control of your vehicle ifyou
do thefoll owin gwhile driving:
R adj ust thedriv er'sseat ,head restraint ,
st eer ing wheel ormir rors
R fast entheseat belt
Ther eis aris kof an acc iden t.
Adj ust thedriv er'sseat ,head restraint ,
st eer ing wheel andmirror and fastenyour
seat beltbefore start ing theen gin e. X
Obse rveth esafe tyguidel ineson seat
adj ust men t(Y page 97).
X Mak esure that seat 0087isadj ust edpro perl y.
Ele ctric alseat adjust men t.(Y page 99)
When adjust ing theseat ,mak esure that:
R you areasfar away from thedriv er'sair bag
as poss ible
R you aresittin gin ano rm aluprig htposi tion
R you can fastentheseat beltproperl y
R you have movedtheback restto an almos t
ver ticalposi tion
R you have settheseat cushion angleso that
your thighs aregentlysuppo rted
R you can depr essthepedals properl y
X Chec kwhet herthehead restraint isadj us-
te dpro perl y.
When doingso, mak esure that you have
adj ust edthehead restraint sothat theback of
your head issuppo rted ateye levelby the
cen terof thehead restraint .
X Obse rveth esafe tyno teson steer ing col-
umn adjust men t(Y page 103).
X Mak esure that steer ing wheel 0043isadj us-
te dpro perl y.
Ad jus tingth est eer ing wheel electricall y
(Y page 103)
When adjust ing thest eer ing wheel column ,
mak esure that:
R you can hold thest eer ing wheel withyour
arm ssligh tlyben t
R you can mov eyour legsfreely
R you can seeallthedispl aysintheins tru-
men tclus tercle arly
X Obse rveth esafe tyguidel inesfor seat belts
(Y page 42).
X Chec kwhet heryou have fastened seat
belt 0044properl y(Y page 44).
The seat beltshould:
R fit snugly across your body
R be rout edacr oss themidd leof your shoul-
der
R be rout edinyour pelvicarea across thehip
jo int s
X Bef ore start ing off,adj ust therear -view mir-
ror and theex terior mirrors(Y page 105)in
suc haway that you have agood viewof
road andtraff iccon dition s.
X Store theseat ,st eer ing wheel andexterior
mir ror settings usin gth emem oryfunction
(Y page 107). Seat
s Imp
ortant safety notes G
WAR
NING
Childr encoul dbec ome trapped ifth ey
adj ust theseat s,part icular lywhen unatten-
ded. Thereis aris kof injury.
When leavingtheveh icle,always taketh e
Sm artKey withyou and lockth eveh icle.This
also applies fortheDig ital Veh icle Key ifth e
"Dig italVeh icle Key" function isact ivat edvia
Mer cedesme connect.Nev erleave childre n
uns uperv isedintheveh icle. Seat
s
97Seat s,steerin gwheel andmirro rs Z
The
seats canstillbeadjusted whenthereis
no Smart Keyinthe ignition lock. G
WARNIN
G
When youadjust aseat, youorother vehicle
occupant scould become trapped, e.g.on
the seat guide rail.There isarisk ofinjury.
When adjusting aseat, make surethatno
one hasany body parts inthe sweep ofthe
seat. G
WARNIN
G
If the driver's seatisnot engaged, itcould
move forwards asfar asthe next catchdur-
ing movemen tsuch asbraking orabrupt
changes ofdirection .As aresult, youwould
be pushed againstyourseatbeltbythe
unsecured driver'sseat.
This could cause youtolose controlofthe
vehicle. Theseat beltcann otprotec tas
inten dedandcould result inadditional
injury.
There isarisk ofan accident andinjury.
Before everyjourney, makesurethatthe
driver's seatisfully engaged.
Observe thesafety noteson "Air bags"
(Y page 45)and "Children inthe vehicle"
(Y page 57). G
WARNIN
G
If you adjust theseat height carelessly, you
or other vehicle occupant scould betrapped
and thereby injured.Children inparticular
could accident allypress theelectric alseat
adjustmen tbutton sand become trapped.
There isarisk ofinjury.
While moving theseats, makesurethatyour
hands orother bodyparts donot getunder
the lever assembly ofthe seat adjustmen t
system. G
WARNIN
G
If the head restraints arenot installed ornot
adjusted correctly,they cannotprovide pro-
tect ionasinten ded.There isan increased
risk ofinjury inthe head andneck area, e.g.
in the event ofan accident orwhen braking. Always
drivewiththehead restraints instal-
led. Before driving off,make sureforevery
vehicle occupant thatthecent erofthe head
restr aintsupports theback ofthe head at
about eyelevel. G
WARNIN
G
You could losecontrolofyour vehicle ifyou
do the following whiledriving:
R adjust thedriver's seat,head restraint,
steerin gwheel ormirrors
R fasten theseat belt
There isarisk ofan accident .
Adjust thedriver's seat,head restraint,
steerin gwheel andmirror andfasten your
seat beltbefore startingthe engine.
! To
prevent damage tothe seats andthe
seat heating, observethefollowing notes:
R Do not spill liquids ontothe seats. Drythe
seats assoon aspossible ifliquid does
get spilled onthe seats.
R Ifthe seat covers aredamp orwet, donot
switch onthe seat heating. Also,donot
use theseat heating todry the seats.
R Clean theseat covers asrecomm ended;
see the"Inter iorcare" section .
R Do not trans portheavy loadsonthe
seats. Donot place pointed objectson
the seat cushions suchaskniv es,nails or
tools. Where possible, usetheseats only
for carrying passengers.
R When operating theseat heating, donot
cover theseats withinsulating materials,
e.g. blankets ,coats, bags,protec tivecov-
ers, child seats orbooster seats.
R When theseat heating isswitched on,the
seat surface canbedamaged asaresult
of object sbeing placed onthe seats, for
example, seatcushions, childseats and
protec tivecovers notapproved by
Mercedes- Benz.
! Make
surethatthere arenoobject sin the
footwell underorbehind theseats when
moving theseats back. There isarisk that
the seats and/or theobject scould bedam-
aged.
i The
head restraints cannotbe removed. 98
SeatsSeats,
steering wheelandmirrors
Switching
theseat heating on/off
Switching on/off G
WARNING
Repeatedly switchingonthe seat heating
can cause theseat cushion andbackrest
pads tobecome veryhot.Thehealth ofper-
sons withlimited temperature sensitivityor
a limited abilityto react tohigh tempera-
tures maybeaffected orthey mayeven suf-
fer burn-like injuries.Thereisarisk ofinjury.
Therefore, donot switch theseat heating on
repeatedly.
! When
theseat heating isswitched on,the
seat surface canbedamaged asaresult of
object sbeing placed onthe seats, forexam-
ple, seat cushions, childseats andprotec-
tive covers notapproved byMercedes-B enz.
Ensure thatthere arenoobject son the seat
surface whentheseat heating isswitched
on. Driver's
andfront -passenger seat The
three redindicator lampsinthe button
indicate theheating levelyouhave selected.
The system automatically switchesdownfrom
level 3to level 2after approximately eight
minutes.
The system automatically switchesdownfrom
level 2to level 1after approximately ten
minutes.
The system automatically switchesoffapprox-
imately 20minutes afteritis set tolevel 1.
X Make surethattheSmartK eyisin position
0047 or0048 inthe ignition lock.
X To switch on:press button 0043repeatedly
until thedesired heating levelisset.
X To switch off:press button 0043repeatedly
until allthe indicator lampsgoout.
i If
the battery voltage istoo low, theseat
heating mayswitch off.
Problems withtheseat heating Problem
Possible
causes/co nsequences and0050 0050
Solutions The
seat heating has
switched offprema-
turely orcannot be
switched on.The vehi-
cle's electrical system
voltage istoo low
because toomany elec-
trical consumers are
switched on. Switch
offelectrical consumers thatyoudonot need, suchasthe
rear window defroster orinterior lighting.
Once thebattery issufficiently charged,switchonthe seat heating
again. Seats
101Seats,steering wheeland mirrors Z
Steering
wheel Import
antsafety notes G
WARNING
You could losecontrolofyour vehicle ifyou
do the following whiledriving:
R adjust thedriver's seat,head restraint ,
steering wheelormirrors
R fasten theseat belt
There isarisk ofan accident.
Adjust thedriver's seat,head restraint ,
steering wheelandmirror andfasten your
seat beltbefore startingthe engine. G
WARNING
Children couldinjure themselves ifthey
adjust thesteering wheel.Thereisarisk of
injury.
Never leavechildren unsupervised inthe
vehicle.
When leaving thevehicle, alwaystake the
SmartK eywith youand lock thevehicle. This
also applie sfor the Digital Vehicle Keyifthe
"Digital Vehicle Key"functionisactivated via
Mercedes meconn ect.
The electrically adjustablesteeringwheelcan
still beadjusted whenthereisno SmartK eyin
the ignition lock. Adjust
ingthe steering wheelelectri-
cally 0043
Adjust sthe steering wheelheight
0044 Adjust sthe steering wheelposition (fore-
and-aft adjustment )
i Further relatedsubjects:
R EAS Y-ENTRY/E XITfeature (Ypage 103)
R Stor ingsettin gs(Y page 107) EASY
-ENTR Y/EXITfeatur e
Import antsafety notes G
WARNING
If you drive offwhile theEAS Y-ENTRY/E XIT
feature ismaking adjustment s,you could
lose controlofthe vehicle. Thereisarisk of
an accident.
Always waituntil theadjustment processis
complete beforedriving off. G
WARNING
When theEAS Y-ENTRY/E XITfeature adjusts
the steering wheel,youand other vehicle
occupants –particularly children–could
become trapped. Thereisarisk ofinjury.
While theEAS Y-ENTRY/E XITfeature ismak-
ing adjustment s,make surethatnoone has
any body parts inthe sweep ofthe steering
wheel. Steering
wheel
103Seats,steering wheeland mirrors
Z
If
somebod ybecomes trapped:
R press oneofthe memory function posi-
tion buttons, or
R move theswitch forsteering wheel
adjustment inthe opposi tedirection to
that inwhich thesteering wheelismov-
ing.
The adjustment processisstopped. G
WARNING
When theEASY-E NTRY/EXIT feature adjusts
the steering wheelandthedriver's seat,you
and other vehicle occupants –particul arly
childre n–could become trapped.There isa
risk ofinjury.
Whil ethe EASY-E NTRY/EXIT feature ismak-
ing adjustments, makesurethatnoone has
any body parts inthe sweep ofthe seat and
the steering wheel.
If somebod ybecomes trapped:
R press oneofthe memory function posi-
tion buttons, or
R press oneofthe memory function mem-
ory buttons, or
R move theswitch forsteering wheel
adjustment inthe opposi tedirection to
that inwhich thesteering wheelismoving
The adjustment processisstopped. G
WARNING
If you useopenings inthe body work or
detachab leparts assteps, youcould :
R slip and/or fall
R dama gethe vehicle andcause yourself to
fall .
There isarisk ofinjury.
Alway suse secure climbingaids,e.g. asuit-
abl elad der.
The EASY-E NTRY/EXIT feature makesgetting
in and outofyou rvehicle easier.
You canactivate anddeactiva tethe EASY-
ENTRY/EXIT featureinthe on-board computer
(Y page 201). Posi
tion ofthe steering wheelwhen
the EAS Y-ENTRY/E XITfeature isactive The
steering wheelswings upwhen you:
R remove theSmartKey fromtheignition lock
R open thedriver's doorwithKEYLESS- GOin
positio n1
R open thedriver's doorandtheSmartKey is
in positio n0092 or0047
i The
steering wheelmoves upwards onlyif
it has notalrea dyreached theuppe rsteer-
ing limiter.
Posi tion ofthe steering wheelfor driv-
ing The
steering wheelismoved tothe last selec-
ted positio nwhen:
R the driver's doorisclosed
R you insert theSmartKey intotheignition
lock
or
R you press theStart/St opbutton onceon
vehicle swith KEYLESS- GO
When youclose thedriver's doorwiththeigni-
tion switched on,the steering wheelisalso
automa ticallymoved tothe previou slyset
positio n.
The lastpositio nof the steering columnis
stored whenyouswitch offthe ignition or
when youstore thesetting withthememory
function (Ypage 107).
Crash-responsi veEAS Y-EX ITfeature If
the crash-responsive EASY-EXITfeature is
triggered inan accident, thesteering column
wil lmove upwards when thedriver's dooris
opened. Thisoccurs irrespectiveofthe posi-
tion ofthe SmartKey inthe ignition lock.This
makes iteasi erto exit thevehicle andrescue
the occupants.
The crash-responsive EASY-EXITfeature isonly
opera tional ifthe EASY-E XIT/ENTRY featureis
activated inthe on-board computer
(Y page 201). 104
Steering
wheelSeats, steerin gwhe eland mirrors
Using
reversegear You
canadjust theexterior mirror onthe fron t-
passenger sidetoaposition thatallows youto
see therear wheel onthat side assoon asyou
engage reversegear. Thissettingcan be
stor edusing memor ybutt onM0085.
X En sure thattheSmart Keyisin position 0048
in the ignit ionlock .
X With theexterior mirror onthe fron t-
passenger sideactiv ated, usebutton0087 to
adjust theexterior mirror .The rear wheel
and thecurb should bevisible inthe exterior
mirror .
X Press memor ybutt onM0085 and one ofthe
arrows onbutt on0087 within three secon ds.
The parkin gposition isstor edifthe exterior
mirror doesnotmove.
X Ifthe mirror moves outofposition ,repeat
the steps .
Calling upastor edpar king position
sett ing X
Turn theSmart Keytoposition 0048inthe igni-
tion lock.
X Selec tthe exterior mirror onthe fron t-
passenger sideusing button0044.
X En gage reversegear.
The exterior mirror onthe fron t-passenger
side moves tothe stor edparkin gposition .
The exterior mirror onthe fron t-passenger side
moves backtoits original position :
R as soon asyou exceed aspeed of9mph
(1 5km/ h)
R ifyou press button0043 for the exterior mirror
on the drive r'sside Mem
oryfunct ion Stor
ingsett ings G
WARN
ING
If you usethememo ryfunc tion onthe driv-
er's side while driving,you could losecon-
tr ol of the vehic leas aresult ofthe adjust -
men tsbeing made. Thereisarisk ofan acc i-
dent .
Only usethememo ryfunc tion onthe driv-
er's side when thevehic leisstat ionar y. G
WARN
ING
When thememo ryfunc tion adjust sthe seat,
you and othervehic leocc upant s– part icu-
larly childr en–could becom etrapped. There
is arisk ofinjury.
While thememo ryfunc tion ismakin gadjust -
men ts,make surethatnoone hasany body
part sin the sweep ofthe seat.
If someo nebecom estrapped, pressamem-
ory posit ionswitc hor seat adjust ment
switc himmed iately. G
WARN
ING
Children couldbecom etrapped ifthe yact i-
vat ethe memo ryfunc tion,part icularly when
unat tended. There isarisk ofinjury.
Never leavechildrenunsuper visedinthe
vehic le. Mem
oryfunct ion
107Seats,steer ingwheel andmirrors
Z
The
operating safetyofyour vehicle maybe
restr icted.
You could losecontrolofthe vehicle, for
example:
R when braking
R in the event ofabrupt steeringmaneuvers
and/or whenthevehicle's speedisnot
adapted tothe road condit ions
There isarisk ofan accident .
In the event ofashort circuit orasimilar
incident ,cont actaqualified specialist work-
shop immediately. Donot drive anyfurther.
You should haveallwork involving thebat-
tery carried outataqualified specialist
workshop.
For further informationabout ABSandESP®
,
see (Ypage 60)and (Ypage 65). G
WARNIN
G
Elect rostat icbuild-up canlead tothe crea-
tion ofsparks, whichcouldignite thehighly
explosive gasesofabattery. Thereisarisk
of an explosion.
Before handling thebattery, touchthevehi-
cle body toremove anyexistin gelectrost atic
build-up.
The highly flammable gasmixt ureforms when
charging thebattery aswell aswhen jump-
start ing.
Always makesurethatneither younorthebat-
tery iselectrost aticallycharged. Abuild-up of
electrost aticcharge canbecaused, forexam-
ple:
R by wearing clothingmade fromsynthet ic
fibers
R due tofrict ionbetween clothingand seats
R ifyou push orpull thebattery acrossthe
carpet orother synthet icmaterials
R ifyou wipe thebattery withacloth G
WARNIN
G
During thecharging process,abattery pro-
duces hydrogen gas.Ifashort circuit occurs
or sparks arecreated, thehydrogen gascan
ignite. Thereisarisk ofan explosion. R
Make surethatthepositive terminalof a
conn ected battery doesnotcome into
cont actwith vehicle parts.
R Never placemetal object sor tools ona
battery.
R Itis important thatyouobserve the
described orderofthe battery terminals
when connectin gand disconn ectingabat-
tery.
R When jump-st arting,makesurethatthe
battery poleswithidentical polarityare
conn ected.
R Itis particularly importanttoobserve the
described orderwhen connectin gand dis-
conn ectin gthe jumper cables.
R Never connectordisconn ectthe battery
termin alswhile theengine isrunnin g. G
WARNIN
G
Batt eryacid iscaustic. Thereisarisk of
injury.
Avoid contactwith skin, eyesorclothin g.Do
not inhale anybattery gases.Donot lean
over thebattery. Keepchildren awayfrom
batteries. Washawaybattery acidimmedi-
ately withplenty ofclean water andseek
medical attention. H
Environmental
note Batt
eries containpollutants.
It is illegal todispose of
them withthehousehold
rubbish. Theymust becol-
lected separately anddis-
posed ofinan environ men-
tally responsible recycling
system. Dispose
ofbatteries inan
environ mentallyresponsible
manner .Take discharged
batteries toaqualified spe-
cialist workshop ortoacol-
lection pointforused bat-
teries. Bat
tery (vehicl e)
283Breakdown assistance Z