Page 41 of 498

BAGO FFindicator lam pisoff.Ift he front
passenger seat is occupied, mak esure, bo th
befor eand during thej ourne y,that thes tatus of
th ef ront passenger air bag is cor rect
(
→page 42).
* NO
TEImpo rtant points toremember if
th ef ront passenger seat is unoccupied
In an accident, thec omponents of the
re stra int sy stem ma ydeplo yunnecessarily
on thef ront passenger side if:
RTher eareheavy objects on thef ront
passenger seat.
RThe seat belt tongueise ngaged in the
seat belt buckle of thef ront passenger
seat and thef ront passenger seat is
unoccupied.
#St ow object sinas uitable place.
#Onlyone person should use eac hseat
belt at an yone time.
Protection bythea ir bags
Depending on thea ccidents ituation,anair bag
ma ysupplement thep rotection of fere dbyac or‐
re ctly fastened seat belt.
&
WARNING Risk of injury or deathdueto
incor rect seatp osition
If yo ud eviat ef romt he cor rect seatp osition,
th ea ir bag cann otper form its intended pro‐
te ctiv efunction and deployment ma yeven
cause fur ther injuries.
To avo id hazardous situations ,alway sm ake
sur ethat all vehicle occupants:
RHa ve their seat belt fastened cor rectly,
including pregnant women.
RAres eated properly and that dis tance to
th ea ir bags is as larg easpossible.
RObser vethef ollowing information.
#Alw aysm akes uret hat ther ea reno
objects between thea ir bag and the
ve hicle occupant.
To avo idther isk sresulting from thed eployment
of an air bag, eac hvehicle occupant must
obser vethef ollowing information:
RBefor estartin gy our journe y,adjus tyour seat
cor rectly ;the driver's seat and front
passenger seat should be mo vedasf ar back
as possible.
When doing so, alw ayso bser vethei nforma‐
tion on thec orrect driver's seatp osition
(
→page 83).
ROnlyhold thes teering wheel bythes teering
wheel rim. This all owsthe air bag tobe fully
deplo yed.
RAlw aysl ean agains tthe seat backres twhen
th ev ehicle is in motion. Do no tlean forw ards
or agains tthe door or side windo w.Youm ay
ot herwise be in thed eployment area of the
air bags.
RAlw aysk eep your feet on thef loor .Don ot
put your feet on thec ockpit, fore xamp le.
Yo ur feet ma yotherwise be in thed eploy‐
ment area of thea ir bag.
RIfch ildren ar etrave ling in thev ehicle,
obser vethea dditional no tes(→pag e46).
Occupant saf ety 39
Page 42 of 498

RAlwayss towa nd secur eobject scorrectl y.
Objects in thev ehicle interior ma ypreve nt an air
ba gf romf unctioning cor rectly .Eachv ehicle
occupant mus talway sm akes ureoft hefollow‐
ing:
RTher eareno people, animals or objects
between thev ehicle occupants and an air
bag.
RTher eareno objectsb etwe en thes eat, door
and door pillar (B-pillar).
RTher eareno har dobjects, e.g. coat hangers,
hanging on theg rabh andles or coat hooks.
RTher eareno accessor yparts, suc hascup
holders, attached tothev ehicle within the
deployment area of an air bag, e.g. on doors,
side windo wsor side trim.
RTher eareno heavy ,sharp-edged or fragile
object sinthe poc kets of your clo thing. Store
suc hobject sinas uitable place.
Reduce dair bag pr otection
&
WARNING Risk of injury from modifica‐
tions tothea irbag co ver
If yo um odify an airbag co verora ffix objects
suc hass tickers to it,thea irbag can no lon‐
ge rfunction cor rectl y.
#Ne verm odify an airbag co vera nd do
no ta ffix objectstoi t.
The installation location of an air bag is identi‐
fi ed bytheA IRB AG symbol (→pag e38).
&
WARNING Risk of injury or deathdueto
th eu se of unsuitable seat co vers
Uns uitable seat co vers can obstruct or pre‐
ve nt thed eployment of air bags integrated
int ot he seats.
Consequentl y,thea ir bags cann otprotect
ve hicle occupants as they ared esigned to
do. In addition, operation of thea utomatic
front passenger air bag shutof fmaybe
re stricted.
#Yo us hould only use seat co vers that
ha ve been appr oved fort he cor respond‐
ing seats byMercedes-Benz.
&
WARNING Risk of injury duetomalfunc‐
tions of thes ensor sinthe door paneling
Sensor stocontrol thea irbags ar elocated in
th ed oors. Modification sorworkn otper‐
fo rm ed cor rectl ytot he door sordoor panel‐
ing, as well as damaged doors, can lead to
th ef unction of thes ensor sbeing impaired.
The airbags might therefor enotfunction
proper lyan ym ore.
Consequent ly,t he airbags canno tprotect
ve hicle occupants as they ared esigned to
do.
#Ne verm odify thed oor sorp arts of the
doors.
#Alw aysh ave workon thed oor sord oor
paneling car ried out at aqualified spe‐
cialis tworks hop.
40
Occupant saf ety
Page 43 of 498

&WARNING Risk of injury duetodeplo yed
airbag
Ad eplo yeda irbag no longer has aprotective
function and cann otprotect as intended in
th ee vent of an accident.
#Ha ve thev ehicle towe dtoaq ualified
specialis tworks hop in order tohave the
deplo yeda irbag replaced.
Ha ve deplo yeda ir bags replaced immediately.
St atus of thef ront passenger airbag
Fu nction of thef ront passenger front air bag
shuto ff
The automatic front passenger front air bag
shutof fisabletodetect whe ther thef ront
passenger seat is occupied byap erson or a
ch ild restra int sy stem. The front passenger air
bag is enabled or deactivated accordingly. When ins
talling achild restra int sy stem tothe
front passenger seat, alw aysm akes ureoft he
fo llowing:
REnsur ethat thec hild restra int sy stem is posi‐
tioned cor rectl y(→pag e46).
RAlw ayso bser vethec hild restra int sy stem
manufacturer's ins tallation instructions.
RNe verp lace objects, e.g. cushions, under or
behind thec hild restra int sy stem.
RFu llyr etra ct thes eat cushion lengt hadjust‐
ment.
RThe entir ebase of thec hild restra int sy stem
mus talway sr estont he sitting sur face of the
front passenger seat.
RThe backres toftheforw ard-facin gchild
re stra int sy stem must, as farasp ossible, be
re sting on thes eat backres tofthe front
passenger seat.
RThe child restra int sy stem mus tnot to ucht he
ro of or be put under stra in by theh ead
re stra ints. Adjus tthe seat backres tinclina‐
tion and theh ead restra int setting accord‐
ing ly.
&
WARNING Risk of injury or deathdueto
object sbetwe en thes itting sur face and
th ec hild restra int sy stem
Objects between thes itting sur face and the
ch ild restra int sy stem could af fect thef unc‐
tion of thea utomatic front passenger airbag
shutoff.
This could result in thef ront passenger air‐
bag no tfunctioning as intended during an
accident.
#Do no tplace an yobjects between the
sitting sur face and thec hild restra int
sy stem.
#The entir ebase of thec hild restra int
sy stem mus talway sr estont he sitting
sur face of thef ront passenger seat.
#The backres toftheforw ard-facin gchild
re stra int sy stem mus tlie as flat as pos‐
sible agains tthe backres tofthe front
passenger seat.
#Alw aysc ompl ywitht he child restra int
sy stem manufacturer's ins tallation
instructions.
Occupant saf ety 41
Page 44 of 498

Aperso nont he front passenger seat must
obser vethef ollowing information:
RFasten seat belts cor rectl y.
RSit in an almos tupright seat position wi th
th eir bac kagains tthe seat backrest.
RSit wit htheir feet resting on thef loor ,ifp os‐
sible.
Otherwise, thef ront passenger air bag ma ybe
deactivated bymis take ,for example in thef ol‐
lowing situations:
RThe front passenger transfer stheir weight by
supporting themselves on avehicle armrest.
RThe front passenger sits in suc hawaythat
th eir weight is raised from thes itting sur‐
fa ce.
&
WARNING Risk of injury or deathdueto
deactivated front passenger airbag
If th eP ASSENGER AIR BAGO FFindicator
lam pisl it,the front passenger airbag is disa‐
bled. It will no tbedeployedint heeve nt of
an accident and canno tperform its intended
pr otectiv efunction.
Ap erson in thef ront passenger seat could
th en, fore xamp le, com eintoc ontact wi th
th ev ehicle interior ,especially if thep erson is
sitting tooc lose tothec ockpit.
If th ef ront passenger seat is occupied,
alw ayse nsur ethat:
RThe classification of thep erson in the
front passenger seatisc orrect and the
front passenger airbag is enabled or disa‐
bledina ccordance wit hthe person in the
front passenger seat.
RThe front passenger seath as been moved
as farb ackasp ossible.
RThe person is seated cor rectl y.
#Ensure ,bothb efor eand during thej our‐
ne y,that thes tatus of thef ront
passenger airbag is cor rect.
Fu nction of theP ASSE NGER AIR BAGi ndica‐
to rlamps
Sy stem self-te st
When thei gnition is switched on, asystems elf-
te st is per form ed during whic hthe two
PA SSENGER AIR BAGONa nd OFFi ndicator
lamps light up simultaneousl y.
42
Occupant saf ety
Page 45 of 498

Thestatus of thef ront passenger air bag is dis‐
pla yeda fter thes ystem self-tes t:
RPASSENGER AIR BAGONl ightsupf or
60 seconds, subsequently bo thPASSENGER
AIR BAGONa nd OFFi ndicator lamps ar eoff:
th ef ront passenger air bag is able todeploy
in thee vent of an accident.
RPA SSENGER AIR BAGO FFlightsupc ontinu‐
ously: thef ront passenger air bag is deactiva‐
te d. It will then no tbed eployedint heeve nt
of an accident.
If th eP ASSENGER AIR BAGONi ndicator lam pis
off, only theP ASSENGER AIR BAGO FFindicator
lam pshows thes tatus of thef ront passenger air
bag. The PASSENGER AIR BAGO FFindicator
lam pm aybe lit continuousl yorbeoff.
If th eP ASSENGER AIR BAGO FFindicator lamp
and the6 restra int sy stem warning lamp
light up simultaneousl y,thef ront passenger seat
ma ynotbe used. Also in this case, do no tins tall
ac hild restra int sy stem on thef ront passenger
seat. Ha vethea utomatic front passenger air bag
shutof fchec keda nd repaired immediatel yata
qu alified specialis tworks hop. St
atus display
If th ef ront passenger seat is occupied, ensure,
bo th befor eand during thej ourne y,that thes ta‐
tus of thef ront passenger air bag is cor rect for
th ep reva iling situation.
Af teri nstalling arear ward-facing child
re stra int sy stem tothef ront passenger
seat :
PA SSENGER AIR BAGO FFmus tbel it con‐
tinuousl y.
&
WARNING Risk of injury or deathfrom
using arear ward-facing child restra int
sy stem when thef ront passenger air bag
is enabled
If yo us ecur eac hild in arear ward-facing
ch ild restra int sy stem on thef ront passenger
seat and theP ASSENGER AIR BAGO FFindi‐
cator lam pisoff,t he front passenger air bag
can deplo yintheevent of an accident.
The child could be stru ck bythea ir bag.
Alw ayse nsur ethat thef ront passenger air
bag is disabled. The PASSENGER AIR BAG
OFF indicator lam pmustbel it.
NEVER use arear wardfacing child restra int
on aseat pr otected byan ACTIVE FRONT AIR
BA Ginf ront of it ;DEATH or SERIOUS INJURY
to thec hild can occur.
When ins talling achild restra int sy stem tothe
front passenger seat, observ ethe vehicle-spe‐
cific information .
Depending on thec hild restra int sy stem and the
st atur eoft hechild, theP ASSENGER AIR BAG
OFF indicator lam pmaybe off. In this case, do
no tfitth er ear ward-facing child restra int sy stem
to thef ront passenger seat.
Ins tead, fitt he rear wa rd-facing child restra int
sy stem toas uitable rear seat.
Af teri nstalling aforwa rd-facin gchild
re stra int sy stem tothef ront passenger
seat: depending on thec hild restra int sy stem
and thes tatur eoft hechild, PASSENGER AIR
BA GO FFma ybel it continuousl yorbeoff.
Alw ayso bser vethef ollowing information.
Occupant saf ety 43
Page 46 of 498

&WARNING Risk of injury or deathdueto
incor rect positioning of thef orwa rd-
fa cing child restra int sy stem
If yo us ecur eac hild in aforwa rd-facin gchild
re stra int sy stem on thef ront passenger seat
and youp ositio nthe front passenger seat too
clos etot he cockpit, in thee vent of an acci‐
dent, thec hild could:
RCome int ocontact wi th thevehicle inte‐
ri or if theP ASSENGER AIR BAGO FFindi‐
cator lam pislit,forexample.
RBe stru ck bythea ir bag if the
PA SSENGER AIR BAGO FFindicator lamp
is off.
#Alw aysm ove thef ront passenger seat
as farb ackasp ossible and fully retract
th es eat cushion lengt hadjustment.
Alw aysm akes uret hat thes houlder belt
st ra pisc orrectly routed from thes eat
belt outle tonthevehicle tothes houl‐
der belt guide on thec hild restra int sys‐
te m. The shoulder belt stra pm ustb e
ro uted forw ards and down wardsf rom
th ev ehicle belt outlet. If necessar y,
adjustthe seat belt outle tand thef ront
passenger seat accordingly.
#Alw ayso bser vethec hild restra int sys‐
te mm anufacturer's ins tallation instruc‐
tions.
When ins talling achild restra int sy stem tothe
front passenger seat, observ ethe vehicle-spe‐
cific information .
If ap erson is sitting in thef ront passenger
seat: PASSENGER AIR BAGO FFma ybel it con‐
tinuousl yorbeo ff,d ependingont he person's
st ature.
Ap erson on thef ront passenger seat must
alw ayso bser vethef ollowing information:
RIfth ef ront passenger seat is occupied with
an adult or aperson wit hastatur ec orre‐
sponding tothat of an adult,t hePASSENGER
AIR BAGO FFindicator lam pmustbeo ff.T his
indicates that thef ront passenger air bag is
enabled.
If th eP ASSENGER AIR BAGO FFindicator
lam pisl it continuousl y,an adult or person
wit hab uild cor responding tothat of an adult shouldn
otuse thef ront passenger seat.
Ins tead, they should use arear seat.
RIfth ef ront passenger seat is occupied bya
person of smaller statur e(e.g. ateenager or
small adult), theP ASSENGER AIR BAGO FF
indicator lam peither lightsupc ontinuously
or remains off, depending on ther esult of the
classifi cation.
-PASSENGER AIRB AGOFF is off: mo vethe
front passenger seatasf ar backas possi‐
ble or aperson of smaller statur eshould
use arear seat.
-Ifth eP ASSENGER AIRB AGOFF indicator
lam pisl it continuously: aperson of
smaller statur eshouldn otuse thef ront
passenger seat.
& WARNING Risk of injury or deathwhen
th eP ASSENGER AIR BAGO FFindicator
lam pisl it
If th eP ASSENGER AIR BAGO FFindicator
lam premain slit af tert he sy stem self-test,
th ef ront passenger air bag is deactivated. It
will no tbedeployedint heevent of an acci‐
44
Occupant saf ety
Page 47 of 498

dent.Inthis case, thef ront passenger air bag
cannot perform its intended pr otectiv efunc‐
tion ,e.g. when aperson is seated in thef ront
passenger seat.
That person could, fore xamp le, com einto
con tact wi th thevehicle interior ,especially if
th ep erson is sitting tooc lose tothec ockpit.
If th ef ront passenger seat is occupied,
alw ayse nsur ethat:
RThe classification of thep erson in the
front passenger seatisc orrect and the
front passenger air bag is enabled or
deactivated in accordance wit hthe per‐
son in thef ront passenger seat.
RThe person is seated proper lywit hac or‐
re ctly fastened seat belt.
RThe front passenger seat has been mo ved
as farb ackasp ossible.
Further related subjects:RChild restra int sy stem on thef ront passenger
seat (→pag e53).
PRE-SAFE®system
PRE- SAFE®(Pre-Crash Saf ety-Sy stem)
PRE- SAFE®is able todetect cer tain critical driv‐
ing situations and implementp re-em ptivem eas‐
ures toprotect thev ehicle occupants.
PRE-SAFE
®can implement thef ollowing meas‐
ures independentl yofeacho ther:
RTightening thes eat belts on thed rive r's seat
and front passenger seat.
RClosing thes ide windo ws.
RVehicles with sliding sunroof: closingthe
sliding sunroof.
RVe hicles with memor yfunction: moving
th ef ront passenger seat toam oref avo rable
seat position.
RVe hicles with multicontour seat: increas‐
ing thea ir pressur einthe seat side bols ters
of thes eat backrest.
RPRE-SAFE®Sound: pr ovided that them ulti‐
media sy stem is switched on, generates a
brie fnoise signaltos timulatethe innat epro‐
te ctiv em echanism of aperson's heari ng.*
NO
TEDama gecaused byobject sinthe
fo ot we ll or behindt he seat
The automatic adjustment of thes eat posi‐
tion ma yresult in damag etothe seat and/or
th eo bject.
#Stow object sinas uitable place.
Reversing theP RE- SAFE®system measures
If an accidentd id notoccur ,the pre-em ptive
measures that we retake na re re versed.
Yo uw ill need toper form certains ettingsy our‐
self.
#If th es eat belt pre-tensioning is no treduced,
mo vethes eat backres tbacks lightl y.
The locking mechanism releases.
Fu nction of PRE-SAFE®PLUS (anticipatory
occupant pr otection plus)
PRE- SAFE®PLUS can de tect cer tain impacts,
particular lyan imminent rear impact ,and take
pre-em ptivem easures toprotect thev ehicle
Occupant saf ety 45
Page 48 of 498

occupants. These measures cannotnecessarily
pr eve nt an imminent impact.
PRE-SAFE
®PLUS can implement thef ollowing
measures independentl yofeacho ther:
RTightening thes eat belts on thed rive r's seat
and front passenger seat.
RIncre asingb rake pressur ewhen thev ehicle
is stationar y.This brak eapplication is can‐
celed automaticall ywhen thev ehicle pulls
aw ay.
If an accident did no toccur ,the pre-em ptive
measures that we retake na re re versed.
Sy stem limitations
The sy stem will no tinitiat eanyaction in thef ol‐
lowing situations:
Rwhen reve rsing
The sy stem will no tinitiat eanybraking applica‐
tion in thef ollowing situations:
Rwhils tdriving
or
Rwhen entering or exitin gap arkin gspace
while using ActiveP arking Assist
Information on PRE- SAFE®Impulse Side
If an imminent side impact is de tected, PRE-
SA FE®Impulse Side can pre-emptively mo vethe
front-seat vehicle occupant's upper body
to wa rdst he center of thev ehicle. It does this by
ra pidl yinflating an air cushion in theo uter seat
side bols teroft he seat backres tonthe side on
whic hthe impact is anticipated. This increases
th ed ista nce betwee nthe door and thev ehicle
occupant.
If PRE-SAFE
®Impulse Side has been deplo yedo r
is defective, the 3 5 ( 6 $ ) ( , P S X O V H 6 L G H , Q R S H U D
W L Y H 6 H H 2 S H U D W R U
V 0 D Q X D O displaymessag eis
shown (
→pag e397).
Children in thev ehicle
Note sont he saf etransportation of children
&
WARNING Risk of accident and injury
due tochildren lef tunat tende dint he
ve hicle
If yo ul eave children unaccompanied in the
ve hicle, they ma ybea bletos etthev ehicle in
motion, fore xamp leby:
RRe leasing thep arking brake.
RShifting thet ransmission out of park
position j.
RStartin gthe engine.
In addition, they ma yoperat evehicle equip‐
ment.
#Ne verlea ve children and animals unat‐
te nde dint hevehicle.
#When leaving thev ehicle, alw ayst ake
th eS martK eywit hyou and loc kthe
ve hicle.
46
Occupant saf ety