MERCEDES-BENZ A-CLASS SEDAN 2021 Manual PDF

#
Remo vetheemer gency key(/ pag e68 ). #
Press release knob 2 down fullyand slide
co ver1 inthedir ect ion ofthear row . #
Foldout cover1 inthedir ect ion ofthe
ar row and remo ve. #
Remo vebatt erycom partmen t3 and take
out thedisc hargedbatt ery. #
Inser tth ene wbatt eryint obatt erycom part‐
ment 3.Obser vethepositiv epole marking
in thebatt erycom partmen tand onthebat‐
te ry when doingth is. #
Push inbatt erycom partment 3. #
Re-att achco ver1 and push ituntil it
eng ages. Pr
obl ems with theSm artK ey ,tr oub lesho ot‐
ing Yo
ucan nolon gerlo ck orunloc kth eve hicl e
Po ssible causes:
R The Smar tKey batt eryis we ak ordisc harged.
R The Smar tKey isfaulty . #
Chec kth ebatt eryusing theindicat orlam p
(/ page66). #
Replace theSmar tKey batt ery, ifnec essar y
(/ page68). #
Use theemer gency keyto loc kor unloc k
(/ page72 ). #
Have theSmar tKey checkedat aqu alif ied
spec ialistwo rkshop. Ther
eis int erfere nce from apo we rful radio
sig nal source
The Smar tKey function isim pai redby ,fo rex am‐
ple:
R Highvo ltag epo we rlines
R Mobi lephones
R Electr onicdevices (notebook s,table ts)
R Shielding duetome talobje ctsor induc tion
loops forelectr icalgate systems oraut o‐
matic barrier s #
Mak esur eth at ther eis suf ficie ntdist anc e
be tween theSmar tKey and thepo tentia l
sou rceof interfere nce.
Yo uha ve los ta Sma rtKe y #
Have theSmar tKey deactiv ated ataqu alif ied
spec ialistwo rkshop. #
Ifnecessar y,ha ve themec hanical lock
re placed aswell. Open
ingand closing 69

Door
s Un
loc king/opening thedoor sfrom theinsid e #
Tounlo ckand open afront door :pul ldoor
handl e1. #
Tounlo ckare ar door :pul lth ere ar door
han dle. #
Toopen are ar door :pul lth ere ar door han‐
dle again. Cent
rally loc king andunloc kingtheve hicl e
fr om theinsid e #
Tounlo ck:pr ess button 1. #
Toloc k:press butt on2.
The redindicat orlam pon butt on2 onthe
dr iver or front passeng erdoor lights uponc e
th eve hicle isloc ked. %
Youcan also lockand unlocktheve hicle
wit hth ebutt ons onthefront passeng erdoor
and rear door s.
This does notloc kor unlo ckthefuel 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. 70
Openin gand closin g

#
Tounlo cktheve hicl e:touc hth einner sur‐
fa ce ofthedoor handle. #
Toloc kth eve hicl e:touc hsen sor surface
1 or2. #
Convenience closing:touc hre cess edsen‐
sor surface 2untilth eclosing process has
been completed.
% Further information oncon venie nce closing
(/ page 79) . If
yo uopen thetrunk lidfrom outside, thetrunk
lid isaut omaticall yunloc ked. Pr
oblems withKEYLE SS-GO, troubleshoo ting Yo
ucan nolon gerlo ck orunloc kth eve hicl e
using KEYLESS-GO
Po ssible causes:
R The Smar tKey functions have been deactiv a‐
te d.
R The Smar tKey batt eryis we ak ordisc harged.
R The Smar tKey isfaulty . #
Activateth eSmar tKey functions
(/ page67 ). #
Chec kth ebatt eryusing theindicat orlam p
(/ page66). #
Replace theSmar tKey batt ery, ifnec essar y
(/ page68). #
Use theemer gency keyto loc kor unloc k
(/ page72 ). #
Have theve hicle andSmar tKey checkedat a
qu alif ied spec ialistwo rkshop. Ther
eis int erfere nce from apo we rful radio
sig nal source
The KEYLESS-G Ofuncti onisim pa ired by,fo r
ex am ple:
R Highvo ltag epo we rlines
R Mobi lephones
R Electr onicdevices (notebook s,table ts)
R Shielding duetome talobje ctsor induc tion
loops forelectr icalgate systems oraut o‐
matic barrier s #
Mak esur eth at ther eis suf ficie ntdist anc e
be tween theSmar tKey and thepo tentia l
sou rceof interfere nce. Ac
tiv atin g/deac tivatin gthe automati clo ck ‐
ing featur e The
vehicle isloc kedaut omatic allywhen the
ignit ionisswitc hedonand thewheels aretur n‐
ing faster than walkin gpace. Open
ingand closing 71

#
Toactiv ate: press and hold button2 for
appr oximat elyfive seconds untilanacous tic
signal sounds. #
Todeac tivate: press and holdbu tton 1 for
appr oximat elyfive seconds untilanacous tic
signal sounds.
The redindicat orlam pon butt on2 lights up
onc eth eve hicle isloc ked. In
thefo llo wing situat ions,th er eis adang erof
being lockedout when thefunc tion isactiv ated:
R While theve hicle isbeing tow star ted/
pushed.
R Ifth eve hicle isbeing tested on aro ller dyna‐
mome ter. Loc
king/u nlocking theve hicl ewith the
emer gency key Loc
king/u nlocking thedr iver' sdoor withth e
emer gency key
% Ifyo uwish toloc kth eve hicle entirelyusing
th eemer gency key,firs tpr es sth ebutt onfor
loc kin gfrom theinside whilethedr iver's
door isopen. Thenproceed toloc kth edr iv‐
er's door using theemer gency key. #
Remo vetheemer gency key(/ pag e68 ). #
Inser tth eemer gency keyas faras itwil lgo
int oopening 1intheco ver. #
Pull and hold thedoor handle. #
Pull theco veron theemer gency keyas
st ra ight aspossible away from theve hicle
until itre leases. #
Release thedoor handle. 72
Opening andclosing

#
Tounlo ck:tur nth eemer gency keyco unt er-
clo ckwise toposition 0047. #
Toloc k:tur nth eemer gency keyclo ckwise to
position 0047. #
Carefully press theco veront oth eloc kcyli n‐
der until iteng ages and isseat edfirm ly. Loc
king thefront passeng erdoor andrear
door s #
Inser ta sui table objec t,e.g. theemer gency
ke y,int oopen ing1onthedoor lock. #
Toloc kth elef t-han dside oftheve hicl e:
tur nth eemer gency keyco unt er-cloc kwi seas
fa ras itwil lgo. #
Toloc kth eright- hand sideoftheve hicl e:
tur nth eemer gency keyclo ckwise asfaras it
wil lgo.
If th eloc keddoor isthen closed, itcan nolong er
be opened from theoutside. Tr
unk Openi
ngthetrunk lid &
DANG ER Risk ofexhaus tga spoisoning
Combus tionengines emitpoisonous exhaus t
ga ses suchas carbon monoxide.Exhaus t
ga ses can entertheve hicle interior ifth e
tr unk lid is op en when theengine isrunning ,
esp ecially ifth eve hicle isin mo tion. #
Alw aysswitc hof fth eengine before
opening thetrunk lid. #
Neverdr ive wit hth etrunk lidopen. Openin
gand closing 73

*
NO
TEDama getothetrunk lidbyobs ta‐
cle sab ove theve hicle The
trunk lidswings upwards when itis
opened. #
Ther efor e, mak esur eth at ther eis suf fi‐
cie ntcle arance above thetrunk lid. #
Pull thetrunk lidhandle. #
Vehicl eswith HANDS -FREEACCESS: Make
a kic kin gmo vement withyo ur foot belo wthe
bum per(/ page75 ). #
Pull trunk lidremo teoper ating switch1. #
Press and hold the008B buttononthe
Smar tKey . Closing
thetrunk lid &
WARNIN GRisk ofinju ryfrom unsecu red
it ems intheve hicle
If object s,lugg ageor loads areno tsecur ed
or notsecur edsuf ficie ntly,they cou ldslip,
tip ove ror be throw nar ou nd and ther eb yhit
ve hicle occupants.
Ther eis arisk ofinjur y,par ticular lyin the
ev ent ofsudden braking orasudden chang e
in dir ect ion. #
Alw aysst ow object sin suc hawa yth at
th ey canno tbe thro wn around. #
Beforeth ejour ney,secur eobjects, lug‐
ga ge orloads agains tslipping ortipping
ove r. Obser
vetheno teson loadi ngtheve hicle. #
Pull thetrunk liddown wardsusing thehan‐
dle recess andpush itclos ed. 74
Opening andclosing

HANDS
-FREEACCESS function Wi
th HANDS-FREE ACCES Syo ucan open the
tr unk lid by per form ing akic kin gmo vement
under thebum per.
Obser vetheno teswhen opening thetrunk lid
(/ page73 ). &
WARNIN GRisk ofburnscaused byaho t
ex haus tsy stem
The vehicle exhaus tsy stem can become very
ho t.Ifyo uuse HAND S-FRE EAC CES S,you
cou ldbu rn yourself bytouc hin gth eex haus t
sy stem. #
Alw aysensur eth at youon lyma kea
kic king movement within thede tection
ra ng eof thesensor s. *
NO
TEDama getotheve hicle caused by
unin tentio nallyopening thetrunk lid R
When usinganaut omatic carwash
R When usingahigh pressur ecleaner #
Deactiv ateKEYLES S-GOormak esur e
th at theSmar tKey locat edisat leas t
10 ft(3 m) away from theve hicle in
suc hsituations. When
making thekic king movement, makesur e
th at youar est andi ngfirm lyon thegr ound. You
cou ldother wise loseyour balan ce,e.g.on ice. Obs
erve thefo llo wing notes:
R The Smar tKey isbehin dth eve hicle.
R Stand atleas t12 in(30 cm) away from the
ve hicle while perform ing thekic king move‐
ment.
R Donotcome intocont actwithth ebum per
while making thekic king movement.
R Donotcar ryout thekic king movement too
slo wly.
R The kicking movement mustbe towa rdsth e
ve hicle andbackag ain. 1
Detection rang eof thesensor s Openin
gand closing 75

If
se veralcon secut ive kic kin gmo vements are
no tsuccessfu l,wa itte nseco nds.
Sy stem limit s
The system maybe impair edorma yno tfunc tion
in thefo llo wing cases :
R The sensorsar edir ty,e.g. due toroad salt or
sn ow .
R The kicking movement ismade using apr os‐
th etic leg.
The trunk lidcould beopen edunin tentio nally,in
th efo llo wing situat ions:
R Aper son 'sarms orlegs aremo vingin the
sensor detection rang e, e.g .wh en polishi ng
th eve hicle orpic king upobject s.
R Object sar emo vedor placed behind theve hi‐
cle, e.g. tensi oni ng stra ps orlugg age.
R Clam pingstra ps, tarp sor other coverings are
pu lled ove rth ebum per.
R Apr otect ive mat withalengt hre ac hin gove r
th etrunk silldown intoth ede tection rang e
of thesensor sis used.
R The protect ive mat isno tsecur edcor rectl y. R
Workisbeing doneonthetrailer hitch,trail‐
er sor rear-m oun tedbicy clerack s.
Deactiv ateth eSmar tKey functions (/page67 )
or do notcar rytheSmar tKey about your per son
in suc hsit uatio ns. Un
loc king andopening thetrunk from insid e
wit hth eemer gency release Re
quirement s:
R The 12Vve hicle batteryis conn ectedand
ch arge d. #
Press emer gency release button1 brief ly. 76
Opening andclosing

Side
windo ws Opening
andclosing theside windo ws &
WARNIN GRisk ofentr apment when
ope ning asid ewi ndo w
Whe nope ning asid ewi ndo w,par tsof the
body could bedraw nin or become trap pe d
be twee nth eside windo wand windo wframe. #
When opening ,mak esur eth at nobody
is touc hin gth eside windo w. #
Ifsomeone istrappe d,release thebut‐
to nimm ediate ly or pullit in order to
clos eth eside windo wag ain. &
WARNIN GRisk ofbeco ming trap ped
whe nclos ingasid ewi ndo w
Whe nclos ingasid ewi ndo w,body parts
could betrapped intheclosing area inthe
pr ocess. #
When closing,mak esur eth at no body
par tsarein theclosing area. #
Ifsomeon eis tra pped, release thebut‐
to nimm ediate ly or pres sth ebutt onin
or der toreopen theside windo w. &
WARNIN GRisk ofbeco ming trap ped
whe nch ildr enopera tetheside windo ws
Childr encould become trapped ifth ey oper‐
at eth eside windo ws,par ticular lywhen unat‐
te nde d. #
Activateth ech ild safetyloc kfo rth e
re ar passe nger com partment side win‐
do ws . #
When leaving theve hicle, alwaysta ke
th eSmar tKey wit hyo uand lockth e
ve hicle. #
Neverlea vechildr enunat tende din the
ve hicle. Re
quirement s:
R The powe rsupp lyor theignition isswitc hed
on. 1
Toclos e
2 Toopen
The buttons onthedr iver's door take prece‐
denc e. #
Tostar taut omatic operation :pr ess the
0062 buttonbeyond thepoint ofresis tance
or pulland release it. Open
ingand closing 77

#
Tointerru pt aut omatic operation :pr ess or
pul lth e0062 buttonagain.
When theve hicle isswitc hedoff,yo ucan con‐
tin ue tooper ateth eside windo ws.
This funct ionisavailable forar ound four min utes
or unt ila fron tdoor isopen ed.
Au tomatic reve rsing funct ionoftheside win‐
do ws
If an obs tacle imped esasid ewi ndo wdu ring the
clos ingproces s,theside windo wwill open again
aut omaticall y.The automatic reve rsing func tion
is onl yan aid and isno ta subs titutefo ryo ur
att entiven ess . #
Dur ing theclosing process, makesur eth at
no body partsarein theclosing area. &
WARNIN GRisk ofbeco ming trap ped
des pite ther ebeing reve rsing protect ion
on theside windo w
The reve rsing func tion does notre act :
R Tosof t,light andthin obje cts, e.g. fin‐
ge rs. R
Dur ing rese ttin g.
The reve rsing func tion cannotpr eve ntsom e‐
one from becomi ngtrap pe din these situa‐
tion s. #
Dur ing theclosing process, makesur e
th at no body partsarein theclosing
ar ea. #
Ifsomeon ebecomes trapped, press the
0062 buttontoopen theside windo w
ag ain. Con
venience opening (ventilating theve hicl e
bef orest ar ting ajour ney) &
WARNIN GRisk ofentr apment when
ope ning asid ewi ndo w
Whe nope ning asid ewi ndo w,par tsof the
body could bedraw nin or become trap pe d
be twee nth eside windo wand windo wframe. #
When opening ,mak esur eth at nobody
is touc hin gth eside windo w. #
Release thebutt onimmediat elyif
somebody becomestrapped. #
Press and hold theÜ buttononthe
Smar tKey .
The follo wing functionsar eper form ed:
R The vehicle isunloc ked.
R The side windo wsareopen ed.
R The pano ramic sliding roof isopened.
R The seat ventil ation ofthedr iver's seat is
switc hedon.
% Ifth ero ller sunblin dof thepanor amicsliding
sunr oofisclosed, thero ller sunblin dis
open edfirs t. #
Tointerru pt con venience opening: release
th eÜ button. #
Tocont inue convenience opening: press
and hold theÜ buttonagain. 78
Opening andclosing