key MERCEDES-BENZ CLA COUPE 2019 User Guide

If
achild younger thantwelve yearsold and
under 5ft (1.5 0m) inheight istravelin gin the
vehic le:
R always securethe child inachild restraint
syst emsuitable forthis Merc edes- Benzvehi-
cle. The child restraint systemmust beappro-
priat eto the age, weight andsize ofthe child.
R always observethe instruct ions andsafet y
not eson "Children inthe vehic le"
(Y page 54)inaddition tothe child restraint
syst emmanuf acturer' sinst allation andoper-
atin ginst ruct ions
R always observethe instruct ions andsafet y
not eson the "Occ upant classif icationsyst em
(OCS)". (Ypage 47) G
WARN
ING
The seat belts maynotperf orm theirint ended
prot ective func tion if:
R the yare damaged, modified,extreme ly
dirt y,bleache dor dyed
R the seat beltbuck leisdamaged or
ext reme lydirt y
R the Emergen cyTens ionin gDev ices, belt
anc horage sor iner tiareels havebeen modi-
fied.
Seat belts maybedamaged inan acc ident ,
althoug hthe damage maynotbevisible, e.g.
due tosplint ersofglass. Modifie dor damaged
seat belts maytearorfail, e.g. inan acc ident .
Modifie dEm ergen cyTens ionin gDev ices
could accident allytrigger orfail todeploy
when necessary. Thisposes aninc reased risk
of injury oreven fatalinj ury.
Never modifythe seat belts ,Em ergen cyTen-
sion ingDev ices, beltanchorage sand inertia
reels. Make surethattheseat belts are
undamage d,not worn outand clean .Follow-
ing anacc ident ,have theseat belts checked
immed iatelyataqualified specialist work-
shop.
Only useseat belts thathave been approv edfor
your vehic leby Merc edes- Benz.
Spor tsseat orAMG Performance seat:this
seat isdesign edfor the stan dard three-po int
seat belt. Ifyou installanot hermulti- point seat
belt, e.g.sport orracin gseat belts ,the rest raint syst
emcannot prov idethe best level ofprot ec-
tion . G
WARN
ING
If you feed seatbelts through theopen ingin
the seat backrest,the seat backrestmay be
damaged ormay even break inthe even tof an
acc ident .This poses anincreased riskof
inj ury oreven fatalinj ury.
Only usethestan dard three-po intseat belt.
Never modifythe seat beltsystem.
Prop eruse oftheseat belts Obser
vethe safet ynot eson the seat belt
(Y page 42).
All vehic leocc upant smust bewearin gthe seat
belt correctlybefor ebegin ningthe jour ney. Also
make surethatallvehic leocc upant sare always
wearin gthe seat beltcorrectlywhile thevehic le
is in mot ion.
When fastenin gthe seat belt, always makesure
that :
R the seat beltbuck leton gue isinse rted only
int othe belt buck lebelon gingtothat seat
R the seat beltispulled tightacro ssyour body
Av oid wearin gbulky clothing ,e.g. awint er
coat .
R the seat beltisnot twist ed
Only thencan theforces which occurbe dis-
tr ibuted overthearea ofthe belt.
R the shoulder sectionofthe belt isrout ed
acro ssthe centerofyour shoulder
The shoulder sectionofthe seat beltshould
not touc hyour neckor be rout edunder your
arm orbehin dyour back.Where possible ,
adjust theseat belttothe appropr iateheight .
R the lapbelt istaut andpasses acrossyour lap
as low down aspossible
The lapbelt must always berout edacro ss
your hipjoin tsand notacro ssyour abdomen .
This applies particularly topregn antwomen .
If nec essary, pushthelapbelt down toyour
hip jointand pullittigh tusing theshoulder
sect ionofthe belt.
R the seat beltisnot rout edacro sssharp, poin-
ted orfragile objects
If you have such itemslocat edon orinyour
clot hing ,e.g. pens ,keys oreyeglasses ,sto re
the seinasuitable place.
R only oneperso nis using aseat belt Occupa
ntsaf ety
43Safety Z

Requi
rements To
be classifiedcorre ctly,the front passe nger
mus tsit:
R with the seatbel tfas tened correctly
R in an almost uprig ht pos ition with thei rba ck
ag ainst the seatba ckrest
R with thei rfee tres ting onthe floor, ifpos sible
If the front passe nger doesnot observe these
condi tions,OC Smay produce afal se cla ssifica -
tion, e.g.because the front passe nger :
R trans ferstheirwe ight by supp orti ngthem-
sel ves onaveh iclearm rest
R sits insuch awa ythat theirwe ight israi sed
from theseatcus hion
If it is ab sol ute lyneces sary to insta lla chi ld
res trai ntsystem onthe front-p asseng ersea t,be
su re to obs erve thecorre ctpos itioning ofthe
chi ldres trai ntsystem. Neverpl ace obje cts
und eror beh indthe childres trai ntsystem, e.g.a
cus hion.The entir eba se ofthe childres trai nt
sy stem mustal wa ysres ton the seatcus hionof
the front-p asseng ersea t.The backrest ofthe
forw ard-faci ngchi ldres trai ntsystem mustlie as
fla tas pos sibleag ainst the backrest ofthe front-
pa sse nger seat.
The childres trai ntsystem mustnot touchthe
roo for be subjecte dto aload bythe head
res trai nt.Adju stthe angleof the seatba ckrest
and theheadres trai ntpos ition acco rdingly .
Only thencanOCSbe guara nteed tofuncti on
corre ctly.Alw aysobs erve thechildres trai ntsys-
tem manu facturer'sinsta llati on and operating
instru ctions .
Oc cupa ntClass ificati onSys tem opera-
tio n(O CS ) 0043
PASSENG ERAIR BAG ONindicator lamp
0044 PASSENG ERAIR BAG OFFindicator lamp The
indicator lamps informyouwh ethe rthe
front-p asseng erfront airba gis dea ctiva tedor
ena bled.
X Pre ssthe Start/Sto pbu tton once ortwi ce, or
turn theSmar tKeytopos ition 0047 or0048 inthe
ig niti onlock.
The system carriesou tsel f-di agnosti cs.
The PASSENG ERAIR BAG OFFandPASSENG ER
AIR BAG ONindicator lamps mustlight upsim ul-
tane ously for appro xima telysixseco nds.
The indicator lamps displ aythe statu sof the
front-p asseng erfront airba g.
R PASSENG ERAIR BAG ONlights upfor 60sec-
onds ,su bse quently bothindicator lamps are
off (PASSEN GERAIRBAG ONand OFF) :the
front-p asseng erfront airba gis ab leto dep loy
in the eventofan acci dent.
R PASSENG ERAIR BAG OFFlights up:the front-
pa sse nger front airba gis dea ctiva ted.Itwi ll
then notbedep loye din the eventofan acci -
dent.
If the PASSENG ERAIR BAG ONindicator lamp is
off, only thePASSENG ERAIR BAG OFFindicator
la mp showsthe statu sof the front-p asseng er
front airba g. The PASSENG ERAIR BAG OFF
ind icator lamp may belit continu ously orbe off.
If the statu sof the front-p asseng erfront airba g
cha nges while the vehicleis in moti on,anairba g
di spl aymes sage appea rsinthe instr umentclu s-
ter (Ypage 202). Whenthe front-p asseng er
sea tis occu pied, alwa yspayattenti ontothe
PASSENG ERAIR BAG OFFindicator lamp. Be
aw are ofthe statu sof the front-p asseng erfront
ai rba gboth before and during thejourney . G
WARNI
NG
If the PASSENG ERAIR BAG OFFindicator
la mp islit, the front-p asseng erfront airba gis
di sa bled. Itwi llnot bedep loye din the eventof
an acci dent andcanno tper form itsintend ed
pro tectiv efuncti on.Aper son inthe front-
pa sse nger seatcou ldthen, forexa mpl e,come
into conta ctwith the vehicle's inter ior, esp e-
cia lly if the person issitti ngtoo closetothe
da shb oard. Thispos esan incre ased riskof
inju ryor eve nfata linju ry.
Whe nthe front-p asseng ersea tis occu pied,
al wa ysensu rethat:
R the classifica tion ofthe person inthe front-
pa sse nger seatis corre ctand thefront- 48
Oc
cupan tsafe tySafe ty

G
WARNING
If you leavechild renunsu pervi sedinthe vehi-
cle, they couldset itin motion by,forexampl e:
R rele ase theparki ngbrake.
R shift theautomatic transmissi onout ofthe
parki ngposi tion P.
R start theengine.
In add ition, theymayopera tevehicl eequ ip-
ment andbecome trapped.There isarisk of
an accide ntand injury .
When leaving thevehicl e,alw aystake the
SmartKey withyouand lock thevehicl e.Never
lea vechild renunsu pervi sedinthe vehicl e. G
WARNING
If perso ns,particu larlychild renaresubjected
to prolo nged exposu reto extreme heator
cold, there isarisk ofinjury ,possi blyeven
fatal .Never leavechild renunattended inthe
vehicl e. G
WARNING
If the child restrai ntsystem issub jected to
dire ctsunli ght,parts maygetvery hot.Chil-
dren mayburn themsel vesonthese parts,
particu larlyon the metal partsofthe child
restrai ntsystem. Thereisarisk ofinjury .
If you leavethe vehicl e,taking thechild with
you ,alw aysensure thatthechild restrai nt
system isnot expose dto dire ctsunli ght.Pro-
tect itwith abla nket, forexampl e.Ifthe child
restrai ntsystem hasbeen expose dto dire ct
sunli ght,letitcool downbefore securingthe
child init. Never leavechild renunattended in
the vehicl e.
Alwa ysensure thatallvehicl eoccupa ntshave
their seatbeltsfastened correctly andaresitting
prope rly.Particu larattention mustbepaidto
child ren.
Observe thesafety notesonthe seat belt
(Y pag e42) and thenotes oncorrect useofseat
bel ts(Y pag e43).
A booster seatmaybenecessa ryto achie ve
prope rseat beltposi tioning forchild renover
40 lbs (18 kg)until theyreach aheig htwhere athree-poi
ntseat beltcan beprope rlyfastened
witho utabooster seat. Spec
ialseatbe ltretractor G
WARNING
If the seat beltis rele ased whiledrivi ng,the
child restrai ntsystem willno longer be
secure dprope rly.The speci alseat beltretrac-
tor isdisa bledand theinertia realdraw sin a
portion ofthe seat belt.The seat beltcannot
be immed iatelyrefastene d.There isan
increas edrisk ofinjury ,possi blyeven fatal.
Stop thevehicl eimmed iately,pay ing atten-
tion toroad andtraffic conditions. Reactivate
the speci alseat beltretractor andsecure the
child restrai ntsystem properly.
All seat beltsinthe vehicl e,except thedrive r's
seat belt,are equipped with aspeci alseat belt
retractor. Whenactivated,thespeci alseat belt
retractor ensuresthat theseat beltcannot
sla cken once thechild seatissecure d.
Install ingachild restrai ntsystem:
X Make sureyouobser vethe child restrai nt
system manufacturer's installationinstruc-
tions.
X Pul lthe seat beltsmoothly fromthebeltout-
let.
X Engage seatbelttongue inbel tbuckle .
Activating thespeci alseat beltretractor:
X Pul lthe seat beltout fullyand letthe inertia
reel retract itaga in.
Whil ethe seat beltis retracting, youshou ld
hear aratcheting sound.The speci alseat belt
retractor isenabl ed.
X Push thechild restrai ntsystem downso that
the seat beltis tight anddoes notloos en.
Remo vingthechild restrai ntsystem anddeac-
tivating thespeci alseat beltretractor:
X Make sureyouobser vethe child restrai nt
system manufacturer's installationinstruc-
tions.
X Press therelease button ofthe seat belt
buckle andguide the seat belttongue back
toward sthe beltsash guide.
The speci alseat beltretractor isdea ctivated. Chi
ldren inthe vehi cle
55Safety Z

You
canthus avoid therisksthat could ariseas
a result of:
R an inc orre ctly cat egoriz edperson inthe fron t-
passen gerseat
R the unin tention aldeact ivationof the fron t-
passen gerfron tair bag
R the unsuit ableposit ioningof the child
rest raint syste m,e.g. tooclose tothe dash-
board
Rear ward -facing child restraint syst em If
it is absolute lynec essary toinst allarearward -
facin gchild restraint syste mon the fron t-
passen gerseat, always makesurethatthe
fron t-passen gerfron tair bag isdeact ivated.
Only ifthe PAS SENGER AIRBAGOFF indic ator
lamp isperman entlylit (Y page 41)isthe fron t-
passen gerfron tair bag deact ivated.
Always observethe child restraint syste mman-
ufact urer's installation andoperat inginst ruc-
tion s.
Forwar d-facing childrestraint syst em If
it is absolute lynec essary toinst allaforwar d-
facin gchild restraint syste mon the fron t-
passen gerseat, always movethefron t-
passen gerseat asfar back aspossible. Fully
ret ract theseat cushio nlengt h.The entirebase
of the child restraint syste mmust always reston
the seat cushio nof the fron t-passen gerseat.
The back restofthe child restraint syste mmust
lie asflat aspossible againsttheback restofthe
fron t-passen gerseat. Thechild restraint syste m
must nottouc hthe roof orbe subjec tedtoaload
by the head restraint .Adj ust the angle ofthe
seat backrestandthehead restraint position
acco rdingly. Always makesurethattheshoul-
der belt strap iscor rectlyrout edfrom thevehi-
cle belt outlet tothe shoulder beltguide onthe
child restraint syste m.The shoulder beltstrap
must berout edforwar dand down fromthevehi-
cle belt outlet .If nec essary, adjustthevehic le
belt outlet andthefron t-passen gerseat acco rd-
ingly.
Always observethe child restraint syste mman-
ufact urer's installation andoperat inginst ruc-
tion s. Child-
proof locks
Imp ortant safet ynotes G
WARN
ING
If childr enare traveling inthe vehic le,the y
could:
R open doors ,thus endan geringoth erpeople
or road users
R exit thevehic leand becaught byonc omin g
tr affic
R operat evehic leequipmen tand becom e
tr apped
There isarisk ofan accid entand injury.
Always activate thechild- proof locksand
over ridefeatureifchildr enare traveling inthe
vehic le.When leaving thevehic le,always take
the key with youand lock thevehic le.Never
leave childrenunat tended inthe vehic le.
Over ridefeature for:
R the rear doors (Ypage 60)
R the rear side windows (Ypage 60) G
WARN
ING
If you leave childrenunsuper visedinthe vehi-
cle, theycould setitin mot ionby,forexamp le:
R release thepark ingbrak e.
R shift theautomat ictransm ission outofthe
park ingposit ionP.
R star tthe engin e.
In addition ,the ymay operat evehic leequip-
men tand becom etrapped. Thereisarisk of
an accid entand injury.
When leaving thevehic le,always takethe
Smar tKey with youand lock thevehic le.Never
leave childrenunsuper visedinthe vehic le. G
WARN
ING
If person s,part icularly childrenare subjec ted
to prolon gedexpos uretoext reme heator
cold, thereisarisk ofinjury, possibly even
fatal. Never leavechildrenunat tended inthe
vehic le. Childr
eninthevehicle
59Safety Z

You
should therefo readapt yourdrivin gstyle
to the diffe renthandlin gchar acterist ics.Have
the brak esyste mchec kedataqualified spe-
cialist workshop.
Please observethe informat iononwarnin gand
indic atorlamps (Ypage 222)
(Y page 222)aswell ason display messag es
(Y page 196). ADAPTIVE
BRAKE
AD APTI VEBRA KEenhan cesbrak ingsafet yand
offe rsinc reased brakingcom fort.In addition to
the brak ingfunc tion,AD APTI VEBRA KEalso has
the HOL Dfunc tion (Ypage 158)andhillstar t
assist (Ypage 126). STEER
CONTROL
Genera linfor mation STE
ERCONTROL helpsyoubytransm itting a
not iceable steerin gforc eto the steerin gwheel
in the direc tionrequired forvehic lestabiliz ation.
This steerin gassist anceis prov ided inpart icular
if:
R both right wheels orboth leftwheels areona
wet orslippery roadsurfac ewhen youbrak e
R the vehic lebegins toskid
Imp ortant safet ynotes i
Obser
vethe "Impor tantsafet ynot es" sec-
tion (Ypage 61).
No steerin gassist anceis prov ided from STEER
CONTROL, if:
R ES P®
is malfun ctionin g
R the steerin gis malfun ctionin g
If ES P®
is malfun ctionin g,you willbeassist ed
furt her bythe elect ricalpower steerin g. Prot
ection againsttheft Imm
obilizer
The immobiliz erpreve ntsyour vehic lefrom
being started without thecorrectSmar tKey. X
To activ atewith theSma rtKey: removethe
Smar tKey from theignit ionlock .
X To
activ atewith KEYLESS-GO start-fu nc-
tion orKEYLESS-GO: switchthe ignit ionoff
and open thedriver 'sdoor.
X To deact ivate:switc hon the ignit ion.
When leaving thevehic le,always takethe
Smar tKey with youand lock thevehic le.Anyone
can startthe engin eif avalid Smar tKey has been
left inside thevehic le.
i The
immobiliz erisalways deactivatedwhen
you startthe engin e.
In the even tthat theengin ecan not bestar ted
(yet thevehic le'sbatt eryischar ged), thesys-
tem isnot operat ional.Contactanauthor ized
Merc edes- BenzCent eror call
1- 800 -FOR-ME RCedes (inthe USA )or
1- 800 -387- 010 0(in Canada). ATA
(anti- theft alar msyst em) X
To arm: lock thevehic lewith theSmar tKeyor
KEYL ESS-GO.
Indic atorlamp 0043flashes. Thealarm system
is armed afterapproxim ately15secon ds.
X To disar m:unlock thevehic lewith theSmar t-
Key orKEYL ESS-GO.
or X Ins ert the Smar tKeyint othe ignit ionlock .
A visual andaudible alarmistrig gered ifthe
alarm system isarmed andyouopen:
R adoor
R the vehic lewith themech anical key
R the trun klid
R the hood 68
Prot
ection against theftSafet y

X
To
sto pthe alarm with the SmartK ey:
pre ssthe 0036 or0037 button onthe Sma rt-
Key .
The alarm isstop ped.
or X Vehi
cles with KE YLES S-GO start-f unction
or KE YLES S-GO :rem ove theStart/ Stopbut-
ton from theigniti onlock (Ypage 123 ).
X Inse rtthe Sma rtKey intotheigniti onlock.
The alarm isstop ped.
X To
sto pthe alarm using KEYLES S-GO :
gra spthe outsid edo or handl e.The Sma rtKey
mu stbe outsid ethe vehicle.
The alarm isstop ped.
or X Pre ssthe Start/ Stopbutton onthe dash-
bo ard .The Sma rtKey mustbe insidethe vehi-
cle .
The alarm isstop ped.
The alarm isnot stop ped, eve nif yo uclo sethe
op en door tha ttrig geredit,for exa mpl e.
i If
the alarm stayson for more than
30 seco nds,the Mer cedesme conne cteme r-
genc ycal lsy stem automa tically send sa mes -
sa ge tothe Custom erCe nter. Thisis do ne
ei ther bytext message ordata conne ction.
The eme rgency callsy stem sendsthe mes -
sa ge ordata pro vided tha t:
R youha ve subsc ribed tothe Mer cedesme
conne ctser vice
R the Mer cedesme conne ctser vice hasbe en
acti vate dpro perly
R the nece ssarymob ile pho nenetw orkis
ava ilab le Pro
tectionagai nstthef t
69Safe ty Z

Smar
tKey Import
antsafety notes G
WARNING
If children areleft unsupervised inthe vehicle,
they could:
R operate thevehicle's equipment
Additionally, childrencouldsetthe vehicle in
motion if,for example, they:
R release theparking brake
R shift theautomatic transmissionoutofpark
position 005D
R start theengine
There isarisk ofan accident andinjury.
Never leavechildren oranimals unattendedin
the 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. G
WARNING
If you attach heavyorlarge object sto the
SmartK ey,the SmartK eycould beuninten -
tionally turnedinthe ignition lock.Thiscould
cause theengine tobe switched off.There isa
risk ofan accident.
Do not attach anyheavy orlarge object sto the
SmartK ey.Remove anybulky keyrings before
insertin gthe SmartK eyinto theignition lock.
! Keep
theSmartK eyaway fromstrongmag-
netic fields. Otherwise, theremote control
funct ioncould beaffected.
Str ong magnetic fieldscanoccur inthe vicin-
ity ofpowerful electrical installations.
Do not keep theSmartK ey:
R with electron icdevices, e.g.amobile phone
or another SmartKey
R with metallic objects,e.g. coins ormetal foil
R inside metallic objects,e.g. ametal case
Vehicles withKEYLESS-GO startfunction: do
not keep theSmartK eyinthe trunk .Otherwise, the
SmartK eymay notbedetect ed,e.g. when
startin gthe engine usingtheStart /Stopbutton. Smar
tKeyfunctions 0043
0037 Tolock thevehicle
0044 0054 Toopen thetrunk lid
0087 0036 Tounlock thevehicle
If you donot open thevehicle withinapprox-
imately 40seconds ofunlocking:
R the vehicle islocked again.
R protect ionagainst theftisreactivated.
X To lock: press the0037 button.
The SmartK eycent rally locks/un locks:
R the doors
R the trunk lid
R the fuel filler flap
The turn signals flashonce when unlocking and
three times whenlocking.
When thelocator lighting isactivated viathe
multimedia system,itlights upwhen itis dark
after thevehicle isunlocked withtheremote
cont rol;see Digital Operator's Manual.
You canalso setanaudib lesignal toconfirm
that thevehicle hasbeen locked. Theaudib le
signal canbeactivated anddeactivated using
the on-board computer (Ypage 190).
X To open thetrunk lidautom atically: press
and hold the0054 button untilthetrunk lid
opens (Ypage 79). 70
Smar
tKeyOpening andclosing

KEYLESS-
GO
Gene ralnot es Be
ar inmin dth at theen gin ecan bestart ed by
any oftheveh icleoc cup antsif th ere isaSm art-
Key intheveh icle.
Lockin gand unlockin g You
canstart ,loc kor unl ockth eveh icleusin g
KE YLE SS-GO .To do this, you onlyne ed car rythe
Sm artKey withyou. Youcancombi nethefun c-
ti on sof KE YLE SS-GO withth ose ofaco nven -
ti on alSm artKey. Unloc kth eveh icleby usin g
KE YLE SS-GO ,for instan ce,and lockit usin gth e
0037 buttonon theSm artKey.
The driver 'sdoor andthedoor atwhic hth ehan -
dle isused ,mus tbot hbe closed. TheSmartKey
mus tbe out side theveh icle. Whe nloc king or
unl ocking withKE YLE SS-GO ,th edist ance
bet ween theSm artKey and theco rrespo nding
door handlemus tno tbe gre aterth an three feet
(on emet er).
A ch eckwhic hper iodic allyestablis hesaradi o
co nn ection bet ween theveh icleand theSm art-
Key determ ineswhet heravalid SmartKey isin
th eveh icle. This occur s,for exampl e:
R when start ing theen gin e
R while drivin g
R when usingHA ND S-FRE EACCE SS
R when theex tern al door handles aretouch ed
R duri ngconven ien ceclosing X
To unl ock theveh icle: touch theinn ersur -
fac eof thedoor handle.
X To lock theveh icle: touch sensor surface0043
or 0044. Mak
esur eth at you donotto uch theinn er
sur faceof thedoor handle.
X Conve nienceclosin gfea ture: touch
rec ess edsen sor surface0044 for anextend ed
per iod.
Fur ther inform ation on theco nven ien ceclo s-
ing feat ure (Ypage 84). X
To unl ock thetrunk lid:pull trunk lidhan -
dle 0043.
Deact ivating and activating If
you donotint endto use theveh iclefor alon -
ger period oftime, youcan deac tivat eKE YLE SS-
GO. TheSmartKey willthen use verylit tle powe r,
th ere byconserv ing battery powe r.Fo rth epur-
pos esofact ivat ion/de activat ion,th eveh icle
mus tno tbe nearby.
X To dea ctivate: pre ssthe0037 buttonon the
Sm artKey twice inrapi dsuc cessi on.
The indicat orligh ton theSm artKey flashes
twi ce brieflyth en onelon gflas h,then KEY-
LE SS -GO isdeac tivat ed (Ypage 73).
X To act ivate: pressany buttonon theSm art-
Key.
or X Inser tth eSm artKey intoth eign ition lock.
KE YLE SS-GO andallofits asso ciatedfeat ures
are avail able again . KEYLESS-
GOstar tfu nct ion
Gene ralnot es Be
ar inmin dth at theen gin ecan bestart ed by
any oftheveh icleoc cup antsif th ere isaSm art-
Key intheveh icle. Sm
artKey
71Opening andclosing Z

Cha
nging theset tings ofthelockin g
syst em
You canchang eth eset tings oftheloc kin gsys-
te m. This mean sth at onlythedriv er'sdoor and
th efuel fillerflap areunlo cked when theveh icle
is unlo cked. This isusef ulifyou frequen tlytravel
on your own.
X To cha nge theset ting:pres sand hold the
0036 and0037 buttons sim ultan eousl yfor
appro ximatelysix sec onds unt ilth ebat tery
ind icat orlamp flashes twice (Ypage 73).
If th eset tingof theloc kin gsyst emisch ang ed
wit hin thesign alran geoftheveh icle,pres sing
th e0037 or0036 button:
R loc ksor
R unlo cksth eveh icle
The SmartKey nowfun ction sas foll ows:
X To unlo ck:pres sth e0036 buttonon ce.
X To unlo ckcent rally: pres sth e0036 button
twi ce.
X To lock centrally: pres sth e0037 button.
The KEYLE SS-GO function isch ang edasfol-
lows:
X To unlo ckthedr iver 'sdoor :to uch theinn er
surf ace ofthedoor handleonthedriv er's
door .
X To unlo ckcent rally: touch theinn ersurf ace
of thedoor handleonthefron t-passe nger
door ortherear door.
X To lock centrally: touch theout ersen sor
surf ace ononeof thedoor handles.
X To res toreth efa ctor yset tings: pres sand
hold the0036 and0037 buttons sim ultan e-
ously forappro ximatelysix sec onds unt ilth e
bat tery check lamp flashes twice
(Y page 73). Mech
anicalkey
Gener alnot es If
th eveh icle can nolonger belockedor
unlo cked withth eSm artKey orKEYLE SS-GO ,
use themec hanical key.
If you usethemec hanical keyto unlo ckand
open thedriv er'sdoor orthetrunk lid,theant i-
th eft alarm systemwill betrigger ed(Ypage 68). Ther
eare several ways totur noff thealarm :
X To dea ctiv ateth eala rm with thekey: press
th e0036 or0037 buttonon theke y.
or X Inser tth eSm artKey intoth eign ition lock.
or X To
dea ctiv ateth eala rm with KEYLESS- GO:
pres sth eSt art /S topbut tonin theign ition
loc k.The SmartKey must beintheveh icle.
or
X Loc kor unlo cktheveh icle usin gKE YLE SS-
GO. TheSmartKey must beout side theveh i-
cle .
If you unlo cktheveh icle usin gth emec hanical
ke y,thefuel fillerflap willnotbe unlo cked auto -
mat icall y.
X To unlo ckthefu el fille rfla p:ins ert the
Sm artKey intoth eign ition lock.
Rem oving themech anicalkey X
Push release catch0043 inthedire ction ofthe
arr ow and atthesame timerem ove mec han-
ical key0044 from theSm artKey.
For further inform ationabout :
R Un loc kin gth edriv er'sdoor (Ypage 77)
R Un loc kin gth etrunk (Ypage 82)
R Loc kingth eveh icle (Ypage 77)
Inser tingth emech anicalkey X
Push mechanical key0044 com pletelyintoth e
Sm artKey untilit en gages andrelease
cat ch0043 isback inits basic position. 72
Sm
artKeyOp ening andclosing

Smar
tKeybattery
Import antsafety notes G
WARNING
Batt eries containtoxic andcorrosive substan-
ces. Ifbatteries areswallow ed,itcan result in
severe healthproblems. Thereisarisk offatal
injury.
Keep batteries outofthe reach ofchildren. If
a battery isswallow ed,seek medical attention
immediately.
The SmartK eybatteries containperchlorate
material, whichmayrequire specialhandling
and regard forthe environm ent.National guide-
lines must beobserved duringdisposal. InCal-
ifornia, seewww .dtsc.ca.gov/
Haza rdousWa <00560057004800120033004800550046004B004F005200550044005700480012
004C005100470048005B0011004600490050>.
Mercedes-B enzrecommen dsthat youhave the
battery replaced ataquali fiedspecialist work-
shop.
Checking thebatt ery X
Press the0037 or0036 button.
The battery isworking properly ifbattery
check lamp0043lights upbriefly.
The battery isdischarged ifbattery check
lamp 0043does notlight upbriefly.
X Change thebattery (Ypage 73).
i Ifthe SmartK eybattery ischeck edwithin
the signal reception rangeofthe vehicle,
pressing the0037 or0036 button:
R locks or
R unlocks thevehicle
i You
cangetabattery atany quali fiedspe-
cialist workshop. Replacing
thebatt ery You
require aCR 2025 3V cell battery.
X Take themechanical keyoutofthe SmartK ey
(Y page 72). X
Press mechanical key0044into theopening in
the SmartK eyinthe direction ofthe arrow
until battery traycover 0043opens. Whendoing
so, donot hold cover 0043shut.
X Remove batterytraycover 0043. X
Repeatedly tapthe SmartK eyagainst your
palm untilbattery 0087falls out.
X Insert thenew battery withthepositive ter-
minal facing upwards.Use alint-f reecloth to
do so.
X Make surethatthesurface ofthe battery is
free oflint, grease andother contaminants.
X Insert thefront tabsofbattery traycover 0043
and then press toclose it.
X Insert mechanical keyinto theSmartK ey
(Y page 72).
X Check thefunct ionofall SmartK eybuttons on
the vehicle. Smar
tKey
73Opening andclosing Z