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Smar
tKey Ov
ervie wof Smar tKey functio ns 000A
WARNIN GRisk ofacci dent andinjury
due tochildr enleftunat tende din the
ve hicle
If ch ildr enarelef tunat tende din theve hicle,
th ey cou ld:
R ope ndoo rs,th er eb yendang ering other
per sons orroad user s.
R getou tof theve hicle andbehit by
oncom ingtraf fic.
R ope rate vehicle equipment andbecome
tr apped, forex am ple.
In addit ion,ch ildr encould alsosetth eve hi‐
cle inmo tion, forex am ple, by:
R releasing thepar king brak e.
R shif ting theaut omatic transmiss ionout of
par kposition 005D.
R star tin gth eengine 0007
Neverlea vechildr enand animals unat‐
te nde din theve hicle. 0007
When leaving theve hicle, alwaysta ke
th eSmar tKey wit hyo uand lockth e
ve hicle. 0007
Keep theSmar tKey out ofthere ac hof
ch ildr en. 000E
NO
TEDama getotheke ycaus edby
magne ticfields 0007
Keep theke yaw ay from stro ng ma g‐
ne tic fields. 1
Locks
2 Batt erych ecklam p
3 Unlocks
4 Opens/closes thetrunk lid
5 Panic alar m
The Sma rtKe yloc ksand unlocksth efo llo wing
com pone nts:
R Doo rs
R Trunk lid
R Fuelfiller flap Open
ingand closing 55
Page 58 of 518

If
yo udo notopen theve hicle within appr ox‐
imat ely40 seco ndsafte runloc king:
R The vehicle isloc kedag ain
R Anti-th eftpr otect ion isreact ivat ed
Do notke ep theSmar tKey toge ther wit helec‐
tr onic devices orme talobje cts. This canaffect
th eSmar tKey 's functionality .
0009 Ifbatt erych ecklam p2 does notlight up
af te rpr essing the0036 or0037 button,the
batt eryis disc harged. Ac
tiv atin g/deac tivatin gthe acoustic lock ing
ve rificat ion signa l Mult
imed iasystem:
0018 Vehicle 0019
î Vehicle Setting s
0019 Aco ustic Lock 0007
Activate0073 ordeacti vate 0053 thefunc tion. Ac
tiv atin g/deac tivatin gthe pani calar m Re
quirement s:
R The ignit ionisswitc hedoff 0009
The panic alarmfunc tion isonl yav ailable in
cer tain coun tries. 0007
Toactiv ate: press butt on1 forapp rox‐
ima tely one second.
A visual andaudibl ealar mistrigg ered. 0007
Todeac tivate: briefly pr ess button1 again.
or 0007
Press thest ar t/ stop butt ononthecoc kpit
(t he Smar tKey isinsid eth eve hicle). Changing
theunloc kingsettings Po
ssible unlockingfunctions oftheSmar tKey :
R Cen tralunlo cking R
Unloc kin gth edr iver's door andfuel filler flap 0007
Toswitc hbe tw een settings: press the
0036 and0037 buttonssimul taneousl yfo r
appr oximat elysix seco ndsuntilth ebatt ery
ch ecklam pflashes twice.
If th eunloc kingfunction forth edr iver's door
and fuel filler flap has been selected:
R Pressing the0036 buttonasecon dtime cen‐
tra lly unloc kstheve hicle
R Vehicl eswith KEYLESS-GO :If yo uto uc h
th einner surface ofthedoor handle onthe
dr iver's door ,onl yth edr iver's door andfuel
fi ller flap areunlo cked. Deactiv
atingtheSm artK ey functio ns If
yo udo notuse theve hicle oraSmar tKey for
an extende dpe riod oftime, youcan reduce the
ener gycon sum ption ofthere spectiv eSmar t‐
Ke y.To do so, deactiv ateth eSmar tKey func‐
tions. 56
Openi ngand closi ng
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0007
Todeac tivate: press the0037 buttononthe
Smar tKey twi ce inqu ick succ ession .
The batterych ecklam pof theSmar tKey
fl ashes twicebr ief lyand light sup once. 0007
Toactiv ate: press anybutt onontheSmar t‐
Ke y.
0009 When theve hicle isstar tedwit hth eSmar t‐
Ke yin thestow agecom partment ofthecen‐
te rconsole, theSmar tKey functions are
au tomatical lyact ivat ed (0013 page12 8). Re
mo ving /ins ertin gthe eme rgency key 0007
Toremo ve:pr ess release button1.
Em erge ncy key2 ispush edout slightly. 0007
Pull outemer gency key2 untilit en gage sin
th eint ermediat eposition .
0009 Youcan usetheint ermediat eposition of
emer gency key2 toatt achth eSmar tKey to
a ke yring. 0007
Press release button1 again and fully
re mo veemer gency key2. 0007
Toinser t:press release button1. 0007
Insertemer gency key2 totheint ermediat e
position orfull yuntil iteng ages. Re
plac ingthe Smar tKey batt ery 000A
DANG ER Serious damag eto healt h
caused byswallo wing batteries
Batt eries cont aintoxic and corrosiv esub‐
st anc es.Swallo wing batteries ma ycause
ser ious damag eto healt h.
Ther eis arisk offata linj ury. 0007
Keep batt eries out ofthere ac hof chil‐
dr en. 0007
Ifbatt eries aresw allo wed,seek medical
att ent ion immediat ely. 000F
ENVIR
ONMEN TALNO TEEnvironme ntal
da ma gecau sed byimproper disposal of
batt eries Bat
teries con tain polluta nts. Itis
illeg alto dispose ofthem withth ehousehold
ru bbish. 0007
Dispose
ofbatt eries inan
en vironmen tally re sponsible manner.
Ta ke disc hargedbatt eries toaqu alif ied
spec ialistwo rkshop ortoacol lection
poin tfo rused batteries. Opening
andclosi ng 57
Page 60 of 518
Re
quirement s:
R Youre qu ire aCR 203 23V cell battery.
Mer cedes-Ben zre comme ndsthat youha ve the
batt eryre placed ataqu alif ied spec ialistwo rk‐
shop. 0007
Remo vethemec hanical key(0013 page57 ). 0007
Press release button2 down fullyand
re mo vecover1. 0007
Remo vebatt erycom partmen t3 and take
out thedisc hargedbatt ery. 0007
Inser tth ene wbatt eryint obatt erycom part‐
ment 3.Obser vethepositiv epole marking
in thebatt erycom partmen tand onthebat‐
te ry. 0007
Push inbatt erycom partmen t3. 0007
Replace cover1 sothat iteng ages. Pr
oblem swit hth eSm artK ey Pr
oblem
Possible causes/conseq uencesand0050 0050
Solutions
Yo ucan nolongerloc kor unloc kth e
ve hicle. Po
ssible causes are:
R The Smar tKey batt eryis disc hargedor near lydisc harged.
R Ther eis int erfere nce from apo we rful radio signal source. 58
Openin gand closin g
Page 61 of 518
Pr
oblem
Possible causes/conseq uencesand0050 0050
Solutions
R The Smar tKey isdef ective. 0007
Chec kth ebatt eryusing thebatt erych ecklam pand replace ifnec essar y(0013 page57 ). 0007
Use theemer gency keyto loc kor unloc k(0013 page57 ). 0007
Have theSmar tKey checkedat aqu alif ied spec ialistwo rkshop.
Yo uha ve los ta Smar tKey . 0007
Have theSmar tKey deactiv ated ataqu alif ied spec ialistwo rkshop. 0007
Ifnecessar y,ha ve themec hanical lockch ang edaswell. Door
s Un
loc king andopening doorsfrom theinsid e 0007
Pull door handle2.
Loc kingpin 1pops upwhen thedoor is
unloc ked. Loc
king thedoor sfrom theinsid e 0007
Take theSmar tKey wit hyo uwhen exitin gth e
ve hicle andclose thedr iver's door . 0007
Press down locking knob 1 onthedr iver's
door from thefront passeng erseat. Openin
gand closing 59
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0007
Exit theve hicle andpress down theloc king
kn ob onthefront passeng erdoor . 0007
Close thefront passeng erdoor . Loc
king/unloc kingtheve hicl ece ntr allyfrom
th einsid e 0007
Tounlo ck:pr ess button 1. 0007
Toloc k:press butt on2.
This does notloc kor unloc kth efuel filler flap.
The vehicle isno tunloc ked:
R Ifyo uha ve loc kedth eve hicle using the
Smar tKey .
R Ifyo uha ve loc kedth eve hicle using KEY‐
LESS -GO. Loc
king/unloc kingtheve hicl ewith KEY‐
LES S-GO Re
quirement s:
R The Smar tKey isouts idetheve hicle.
R The distance betwee nth eSmar tKey and the
ve hicle does notex ceed 3ft (1 m).
R The driver's door andthedoor atwhic hth e
door handle isused areclosed. 0007
Tounlo cktheve hicl e:touc hth einner sur‐
fa ce ofthedoor handle. 0007
Toloc kth eve hicl e:touc hsen sor surface
1 or2. 0007
Convenience closing:touc hre cess edsen‐
sor surface 2foran extende dpe riod.
0009 Further information oncon venie nce closing
(0013 page 72). 60
Openin gand closin g
Page 63 of 518
If
yo uopen thetrunk lidfrom outside, thetrunk
lid isaut omaticall yunloc ked. Pr
oblems withKEYLE SS-GO Pr
oblem
Possible causes/conseq uencesand0050 0050
Solutions
Yo ucan nolongerloc kor unloc kth e
ve hicle using KEYLES S-GO. Po
ssible causes are:
R The Smar tKey batt eryis we ak ordisc harged.
R Ther eis int erfere nce from apo we rful radio signal source.
R The Smar tKey isdef ect ive. 0007
Chec kth ebatt eryusing thebatt erych ecklam pand replace ifnec essar y(0013 page57 ). 0007
Use themec hanical keyto loc kor unloc kth eve hicle (0013 page57 ). 0007
Have theve hicle andSmar tKey checkedat aqu alif ied spec ialistwo rkshop. Switc
hingtheaut oma ticlocking featur e
on/ off The
vehicle isloc kedaut omatic allywhen the
ignit ionisswitc hedonand thewheels aretur n‐
ing faster than walkin gpace. Open
ingand closing 61
Page 64 of 518
0007
Todeac tivate: press and holdbu tton 1 for
appr oximat elyfive seconds untilanacous tic
signal sounds. 0007
Toactiv ate: press and hold button2 for
appr oximat elyfive seconds untilanacous tic
signal sounds.
In thefo llo wing situat ions,th er eis adang erof
being lockedout when thefunc tion isactiv ated:
R The vehicle isbeing towe d/pushed. R
The vehicle isbeing tested on adynamome‐
te r. Inf
orma tion onthepo we rcl os ingfun ction
fo rthe doors If
yo upush thedoor intoth eloc kto thefirs t
de tent positio n,thepo we rclosi ngfunction will
au tomatical lypul lth edoor intoth eloc k. Un
loc king thedr iver' sdoor withth eemer ‐
ge ncy key 0007
Inser tth eemer gency keyas faras itwil lgo
int oopening 1intheco ver. 0007
Pull and hold thedoor handle. 0007
Pull theco veron theemer gency keyas
st ra ight aspossible away from theve hicle
until itre leases. 62
Openingand closing