
ent
ertainm ent func tions,whic harealso made
possible byelectr oniccontrol units.
Elect ronic contr oluni tscont aind atam emor ies
whic hcan temp orarily orper manent lystor e
te ch nica linf or ma tiona bout thev ehicle's operat‐
ing stat e, com ponent loads, maintenance
re qu iremen tsand tech nica levents ormalfu nc‐
tio ns.
In gener al,t his information documents thes tate
of ac om pon ent part,am odul e,as ystemo rthe
sur round ingssucha s:
R Operatin gstatus ofsystem com ponen ts(e.g.
fi ll le ve ls, batt erys tatus ,tirep ressur e)
R Status messagescon cerningthe vehicle or
its individua lcom ponent s(e.g. number of
wheel revo lution s/speed, longitudin alacc el‐
er ation ,lat er al acc eler ation ,displa yoffas‐
te ned seatbelts)
R Malfunctio nsorfaults inim por tant system
com ponen ts(e.g. lights, brak es)
R Information oneve nts lead ing tovehicle
damag e R
System react ionsins pec ialdrivin gsituatio ns
(e. g.airbag deployment,int erve ntio nofsta‐
bilit ycontrol systems)
R Ambien tconditions (e.g.temp eratur e,rain
sen sor)
In addition toprov iding thea ctual control unit
func tion,this dataassis tsthem anuf actur erin
de tecting andrectify ingmal functi onsand opti‐
mizi ngvehicle functions. Themajority ofthis
dat aist em por arya nd isonl yprocessed inthe
ve hicle itself. Onlyas mall portion ofthed atai s
st or ed inthee vent or fault mem ory.
When your vehicle isser viced, tech nica ldata
fr om thev ehicle canberead out byser vice net‐
wo rkem ployees (e.g. workshops, manufactur‐
er s) or thirdp arties (e.g. breakdo wnservice s).
Ser vice sinc lude repair services, maintenanc e
pr ocesses ,warrant yc laim sand qualit yassur ‐
anc em easures, fore xamp le.The read out isper‐
fo rm ed via thel eg ally prescr ibed portfor the
diagnos ticsconnection inthev ehicle. The
re spectiv eservice networkl ocations orthird
par ties collec t,pr oces sand use thed ata. The y
documen ttec hni cal status esofthev ehicle, assis
tinf ind ing malf uncti onsandi mp roving
qu alit yand aret rans mit tedt ot he manuf acturer,
if necessar y.Fu rther mor e,them anuf actur eris
subject toproduct liability .For this, them anu‐
fa ctur errequ ires tech nica ldata from vehicles.
Fa ult mem ories inthev ehicle canberese tb ya
ser vice outle tasp arto frepair ormaint enanc e
wo rk.
Dep endingonthes elect edequipment, youc an
im por tdatai ntov ehicle convenie nce and info‐
ta inm ent func tionsyour self.
This includes, fore xamp le:
R Mult imed iadat asucha sm usic ,films orpho‐
to sf or pla ybac kina nintegr ated multim edia
sy stem
R Address book datafor use inconne ctionwith
an integr ated hands -free system oran inte‐
gr ated navig ation system
R Entere dn avigation destinations
R Dat aabout theu seofInt erne ts ervices
This datacan be save dl ocall yint he vehicle orit
is locat edon adevice whic hyou have connect ed
to thev ehicle (e.g.asmar tphone, USBflash Gene
raln otes 29

Re
stra int system functiona lity When
thei gnition isswitc hedon,aself-t estis
per form ed, during whic hthe 0075 restra int sys‐
te mw arning lamplight sup.Itgoes outnolater
th an afew sec ond safter thev ehicle isstar ted.
The com ponen tsof ther estra int system aret hen
function al. Malfunctioning
restra int system Am
alfun ction has occurredi nt he restra int sys‐
te mi f:
R The 0075 restra int system warning lam p
does notlight upwhen thei gnition is
switc hedon
R The 0075 restra int system warning lam p
light supc ontin uousl yorrepeat edlyduring a
jour ney &
WARNIN GRisk ofinju rydue tomalfu nc‐
tions inther estra int system
If th er estraint system ismalfunct ioning,
re stra int system com ponen tsma ybetrig‐ ge
redu nint entionall yorm aynotd eplo yas
int ended during anacciden t.This mayaffect
th eE mer gency Tensi oni ng Device sorair‐
ba gs, fore xamp le. #
Have ther estra int system checkeda nd
re pair edimmediat elya taq ualifiedspe‐
cialis tworks hop. Fu
nction ofther estraint system inan acci‐
dent Ho
wt he restra int system worksi sd eter mined by
th es eve rity of thei mp act detected and thet ype
of acciden tantic ipat ed:
R Front alim pact
R Rear impact
R Sideimp act
R Rollover
The activ ation thre sholds fort he com ponents of
th er estra int system ared eter mined basedon
th ee valuatio nofthe sensor values measur edat
va rious points inthev ehicle. Thisprocess ispre-
em ptivei nn atur e. The trigg ering/ deplo yment ofth
ec om ponen tsof ther estra int system mus t
ta ke place ingood timeatthes tart of thec olli‐
sion.
Fa ctor sw hich can only besee nand mea sured
af te rac ollision hasoccur redd onotpla yad eci‐
siv erole inthed eplo yment ofan airbag. Nordo
th ey prov ide anindic ation ofairbag deployment .
The vehicle maybed efor med signif icantl ywith‐
out anairbag beingdeployed. This isthec ase if
onl yparts whic harerelativ elye asil ydefor med
ar ea ffect edand ther ateo fvehicle deceler ation
is no th igh. Conversely ,ana irbag maybe
deplo yede vent hough thev ehicle suffers onl y
minor deformation. Ifve ry rigid vehicle parts
suc haslongitudinal membersarehit, fore xam‐
ple, this ma yresult insuf ficie ntly highleve lsof
ve hicle deceler ation. 34
Occupant safety

Fu
nction ofther ear seat beltbu ckle
ex tender The
seat beltbuckleextende rfor theo uter rear
seat smakes iteasier tofasten thes eat belt.
Alw ayse nsur ethat thes eat belt bucklecan be
ex tende dand retract ed free ly.
Af tert he seat beltisfastened, thes eat belt
buc kleretur ns toits nor mal posit ion.Theseat
belt then lies tight lyacr oss thel ap and thor ax
ar eas. Re
leasing seatbelts #
Press ther elease buttoninthes eat belt
buc kleand guide thes eat belt backwitht he
seat belttongu e. Ac
tiv atin g/deac tivatin gseatb elta djus tmen t
vi at he multi mediasystem Multi
media system:
4 Vehicle 5
î Vehicle Setting s
5 Belt Adjustmen t #
Activate0073 ordeacti vate 0053 thef unc tion . Seat
beltwarning funct ionfort he driver and
fr on tp ass enger The
00E9 seatbeltwarning lam pint he Instru‐
ment Displa yisar emind erthat all vehicle occu‐
pants mustwear their seat belts correctly .
The 00E9 seatbeltw arning lamplight supfor six
secon dseve rytim ethe vehicle isstar ted.
In addition, awarning tone maysound.
Whe nthe driver's andfront passeng er'sdoor s
ar ec losed andthed rive ra nd front passeng er
ha ve fastened their seat belts, thes eat belt
wa rning goes out.
In thef ollo wing cases, thes eat belt warning
light supd uring ajour neyif:
R The vehicle speed exceeds 15mp h
(25 km/ h)and thed rive r's orfront
passeng erseat beltisno tfas tened.
R The driver or front passeng erunf astens their
seat beltwhile thev ehicle isin mo tion. Airbags
Ov
ervie wo fairbags 1
Knee airbag
2 Driver's airbag
3 Front passeng erairbag
4 Windo wcurtain airbag
5 Side airbag
The installation locationofan airbag isident ified
by theA IRB AG symbol.
When enabled, anairbag canprov ide addition al
pr otect ion fort he respectiv evehicle occupant. 40
Occupant safety

R
The front passeng ersits insuc haw aythat
th eir weight israised from thes itting sur‐
fa ce. &
WARNIN GRisk ofinju ryor deat hdueto
deactiv ated front passeng erairbag
If th eP ASSENGER AIRBAGO FFind icat or
lam pislit,t he front passeng erairbag isdisa‐
bled. Itwill notb ed eplo yedi nt he event of
an acciden tand cann otper form itsintended
pr otect ivef unc tion .
Ap erson inthef ront passeng erseat could
th en, fore xamp le,com eintoc ontact with
th ev ehicle interior ,especially ifth ep erson is
sitt ing tooc lose tothec ockpit.
If th ef ront passeng erseat isoccupied,
alw ayse nsur ethat :
R The classif ication ofthep erson inthe
fr ont passeng ersea tisc orrect and the
fr ont passeng erairb agisenabl edordisa ‐
ble dina ccor dance withthe per son inthe
fr ont passeng ersea t. R
The front passeng ersea thas been moved
as farb acka spossi ble.
R The person isseat edcor rectl y. #
Ensu re,b othb efor ea nd dur ing thej our‐
ne y,that thes tatus ofthef ront
passeng erairbag iscor rect. If
th ef ront passeng erseat isoccupied, thec las‐
sif ication ofthep erson orchild restra int system
on thef ront passeng erseat take sp lace afte rt he
fr ont passeng erairbag shutoffs elf-t est.The
PA SSENGER AIRBAGi ndicat orlam psdispla ythe
st atus ofthef ront passeng erairbag.
Alw ayso bser vethen otes on thef unc tion ofthe
PA SSENGER AIRBAGi ndicat orlam ps
(/ page45). Fu
nction oftheP ASSE NGER AIR BAGi ndic a‐
to rlam ps Se
lf-te st of aut oma ticfront passeng erfront
air bag shutoff
When thei gnition isswitc hedon,aself-t estis
per form ed dur ing whic hthe twoP ASSENGER
AIR BAGO NandOFFind icat orlam pslight up
simul taneou sly. Occu
pant safety 45

The
status ofthef ront passeng erfront airbag is
displa yeda fter thes elf-t est:
R PASSENGER AIRBAGO Nlight supfor
60 seco nds, subseq uentlybo th indic ator
lam psareo ff(PAS SENGER AIRB AG ON and
OF F): thef ront passeng erfront airbag isable
to deplo yint he eve ntofan acci dent.
R PASSENGER AIRBAGO FFlight supc ontin u‐
ousl y:thef ront passeng erfront airbag isdis‐
abled. Itwill then notb ed eplo yedi nt he
eve ntofan acci dent.
If th eP ASSENGER AIRBAGO Nindicat orlam pis
of f,on lytheP ASSENGER AIRBAGO FFind icat or
lam pshows thes tatus ofthef ront passeng er
fr ont airbag. ThePASSENGER AIRBAGO FFind i‐
cat orlam pm aybe litcon tinuousl yorbeo ff.
If th eP ASSENGER AIRBAGO FFind icat orlam p
and the0075 restra int system warning lam p
light upsimultaneousl y,thef ront passeng erseat
ma ynotbe used. Alsointhis case, donotins tall
ac hild restra int system onthef ront passeng er
seat. Have aut omat icfron tp asse nger fron ta ir‐
bag shut offc hec keda nd repair edimmediat elyat
aq ualif iedspec ialistworks hop. St
atus displa y
If th ef ront passeng erseat isoccupied, ensure,
bo th bef orea nd dur ing thej our ney,that thes ta‐
tus ofthef ront passeng erfront airbag iscor rect
fo rt he cur rent situa tion.
Af teri ns talling arear ward-faci ng child
re stra int system onthef ront passeng er
seat :PA SSENGER AIRBAGO FFmus tbelitcon ‐
tin uousl y. &
WARNIN GRisk ofinju ryor deat hfrom
using arear ward-faci ng child restra int
sy stem when thef ront passeng erfront
airbag isenabled
If yo us ecureac hildinar ear ward-faci ng
ch ild restra int system onthef ront passeng er
seat andtheP ASSENGER AIRBAGO FFind i‐
cat orlam piso ff,t he front passeng erairbag
can deplo yint he eve ntofan acci dent.
The child could bestru ck bythea irbag.
Alw ayse nsur ethat thef ront passeng erair‐
bag isdeactiv ated. The PASSENGER AIRBAG
OFF indicat orlam pm ustb elit. NEVER
usearear ward-faci ng child restra int
sy stem onaseat protect edbyan ENABLED
FR ONT AIRB AG infront ofit,DE ATHo rSERI‐
OUS INJURYtotheC HILD canoccur . When
installing achild restra int system onthe
fr ont passeng ersea t,obse rvet he vehicle-spe‐
cif icinf ormation (/page60).
Depending onthec hild restra int system and the
st atur eofthe child, theP ASSENGER AIRBAG
OFF indicat orlam pm aybe off.In this case, do
no tins tallth er ear ward-faci ng child restra int
sy stem onthef ront passeng erseat.
Ins tead, installth er ear ward-facin gchild
re stra int system onasuitable rear seat .
Af teri ns talling aforwa rd-facin gchild
re stra int system onthef ront passeng er
seat :depen dingonthec hild restra int system
and thes tatur eo fthe child, PASSENGER AIR
BA GO FFma ybelitcon tinuousl yorbeo ff.
Alw ayso bser vethef ollo wing information. 46
Occupant safety

&
WARNIN GRisk ofinju ryor deat hdueto
inc orrect pos itioning ofthef orwa rd-
fa cing child restra int system
If yo us ecureac hildinaf orwa rd-facin gchild
re stra int system onthef ront passeng erseat
and youp ositiont he front passeng erseat too
clos etot he coc kpit, inthee vent ofan acci ‐
de nt, thec hild could :
R Come intoc ontact with thev ehicle inte‐
ri or ifth eP ASSENGER AIRBAGO FFind i‐
cat orlam pislit,f or exam ple.
R Bestru ck bythea irbag ifth e
PA SSENGER AIRBAGO FFind icat orlam p
is off. #
Alw aysm ove thef ront passeng erseat
as farb acka spossi bleand fully retract
th es eat cushion lengthadjus tmen t.
Alw aysm akes uret hat thes houlder belt
st ra pi sc orrectly routed from thes eat
belt outle tonthe vehicle tothes houl‐
der belt guide onthec hild restra int sys‐
te m. The shou lderbeltstra pm ustb e
ro uted forw ards and down wardsf rom
th ev ehicle beltoutle t.Ifnecessar y, adjus
tthe seat beltoutle tand thef ront
passeng erseat accor dingly. #
Alw ayso bser vethec hild restra int sys‐
te mm anufactur er'sinstallation instruc‐
tion s. When
installing achild restra int system onthe
fr ont passeng ersea t,obse rvet he vehicle-spe‐
cif icinf ormation (/page60).
If ap erson issitting onthef ront passeng er
seat :PA SSENGER AIRBAGO FFma ybelitcon ‐
tin uousl yorbeo ff,d epen dingo nthe per son's
st atur e.
Ap erson onthef ront passeng erseat must
alw ayso bser vethef ollo wing information:
R Ifth ef ront passeng erseat isoccupied byan
adult orap erson withas tatur ec orrespond‐
ing tothat ofan adult ,the PASSENGER AIR
BA GO FFind icat orlam pm ustb eo ff.T his
ind icat esthat thef ront passeng erfront air‐
bag isenabled.
If th eP ASSENGER AIRBAGO FFind icat or
lam pislitcon tinuousl y,an adult orper son
wit hab uildcorresponding tothat ofan adult shoul
dnotuse thef ront passeng erseat.
Ins tead, they should usearear seat.
R Ifth ef ront passeng erseat isoccupied bya
per son ofsmaller statur e(e.g. at eenag eror
small adult), theP ASSENGER AIRBAGO FF
ind icat orlam peither light supc ontin uousl y
or remains off,depe nding onther esult ofthe
cla ssificati on.
- Ifth eP ASSENGER AIRBAGOFF indicat or
lam piso ff:m ove thef ront passeng er
seat asfarb acka spossi bleorthep erson
of smaller statur eshoul dusearear seat.
- Ifth eP ASSENGER AIRBAGOFF indicat or
lam pislitcont inuously: thep erson of
smaller statur eshoul dnotuse thef ront
passeng erseat. &
WARNIN GRisk ofinju ryor deat hwhen
th eP ASSENGER AIRBAGO FFind icat or
lam pislit
If th eP ASSENGER AIRBAGO FFind icat or
lam premain slitaf te rt he system self-t est,
th ef ront passeng erair bag isdeactiv ated. It
will notb ed eplo yedi nt he eve ntofan acci ‐ Occu
pant safety 47

Yo
uw illne ed toper form certain settings your‐
self . #
Ifth es eat belt pre-t ension ingisno treduced,
mo vethes eat backres tb acks lightl y.
The locking mechanism releases. Fu
nction ofPRE-S AFE®
PL US (anticipat ory
occupant protection plus) PRE-
SAFE®
PL US can detect cer tain im pact s,
par ticular lyan imm inentrear impact ,and take
pr e-em ptivem easur estoprotect thev ehicle
occupants. Thesemeasur escanno tnecessar ily
pr eve ntan imm inentimpact.
PR E-S AFE ®
PL US can implem entthef ollo wing
measur esindependentl yofeacho ther :
R Tight ening thes eat belts onthed rive r's seat
and front passeng erseat.
R Vehicl eswith electricrear seats: tighten
th es eat belts ontheo uter rear seat s.
R Incr easin gbrake pressur ewhen thev ehicle
is statio nary.This brak ea pplication iscan‐
celed automaticall ywhen thev ehicle pulls
aw ay. If
an accident didnoto ccur ,the pre-em ptive
measur esthat we retake na rereve rsed.
Sy stem limit s
The system will notinitiat eanyaction inthef ol‐
lo wing situations:
R when backing up
The system will notinitiat eanybraking applica‐
tion inthef ollo wing situations:
R whils tdrivin g
or
R when entering orexitin gap arkin gspace
while using ActiveP arking Assist Saf
elyt ransp orting childr eninthev ehic le Alw
ayso bser vewhen childr enaret rave ling
in thev ehic le %
Alsostrictl yobserve thes afet yn otes fort he
specif icsituation. Inthis wa yy ou can recog‐
nize potentia lrisk sa nd avo iddang ersi fc hil‐
dr en aret rave ling inthev ehicle
(/ page50). Be
dilig ent
Bear inmind that neg lectingtos ecur eac hildin
th ec hild restra int system mayhave serious con‐
seq uences. Alwaysb ed iligent insecur ingachild
car efull ybefor ee very jou rney .
To improve protect ion forc hildr enyoung erthan
12 yearso ldor unde r5ft(1.50 m)inheight ,
Mer cedes- Benzrecom mends youo bse rvet he
fo llo wing informatio n:
R Alw ayss ecur ethe child inac hild restra int
sy stem suitable fort his Mer cedes-Benz vehi‐
cle.
R The child restra int system mus tbea ppr opr i‐
at et ot he age, we ight andsize ofthec hild.
R The vehicle seatmustbes uitable fori ns tal‐
ling achild restra int system.
Ac cid ent statis ticss howt hat childr ensecur ed
on ther ear seats areg ene rallys afer than chil‐
dr en secur edon thef ront seats. Forthis reason ,
Mer cedes-Ben zstrong lyadvis esthat youi nstall
ac hild restra int system onarear seat. Occupan
tsafet y 49

R
Obser vethew arning labels inthev ehicle
int erior and onthec hild restra int system.
R Also secur eTop Tether ifpr esent .
No tesf or vehicl eswith areclining rear seat
When installing achild restra int system, move
th er eclini ngrear seat backres ttoa nalmos t
upr ight posit ion.The recli ning rear seat backres t
mus tbeinc ontact with thec hild restra int sys‐
te m. Obser vethen otes on thec ushionbag
(/ page40).
If yo ui nstallac hild restra int system onthe
re cli ning rear seat ,bes uret oo bser vethec hild
re stra int system manuf acturer'sinstallation
ins truct ions .
Do notm odify thec hild restra int system &
WARNIN GRisk ofinju rydue tomodif i‐
cations tothec hild restra int system
The child restra int system maynolong er
func tion asitis supposed toifyo um ake
mod ificat ionsorattac ho bject stoit,e.g. toys
or unsuit ableaccessor ies.This poses an
incr eased risk ofinjur y! Ne
verm odify thec hild restra int system. Only
att acha ccessor ieswhic hthe manuf acturer
of thec hild restra int system has author ized
especiall yfor this ch ild restra int system. Onl
yusechild restra int systems whicharein
pr oper working condit ion &
WARNIN GRisk ofinju ryor deat hcaused
by theu seofdamag edchild restra int
sy stems
Child restra int systems ortheir retainin gsys‐
te ms that have been subjec tedt oal oad in
an acc iden tmaythen notb ea ble toper form
th eir intended protect ivef unc tion .
The child can notb erestrained inthee vent of
an acci dent, hea vybraki ng oras udden
ch ang eofdirect ion. #
Alw aysr eplace child restra int systems
immediat elyt hat have been damag edor
in vo lved inan acciden t. #
Have thes ecur ingsystems fort he child
re stra int systems checkeda taq ualified spec
ialistworks hop beforei nstalling a
ch ild restra int system again. Av
oid direct sunli ght &
WARNIN GRisk ofburnsw hen thec hild
seat isex posed todirect sunlight
If th ec hild restra int system isex posed to
dir ect sunlight orheat, partscould heatup.
Childr encould sufferb urns from these parts,
par ticular lyon metallic partsof thec hild
re stra int system. #
Alw aysm akes uret hat thec hild
re stra int system isno te xpo sedt o
dir ect sunlight . #
Protect itwit hab lanket,for exam ple. #
Ifth ec hild restra int system has been
ex posed todirect sunlight ,allowi tto
cool befores ecu ring achild intoit. #
Neverlea ve childr enunat tende dint he
ve hicle. 52
Occupant safety