
Protection bythea irbags
Depending on thea ccidents ituation,anairbag
can add tothep rotection of fere dbyac orrectly
fast ened 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 irbag 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:
RAres eated properly and keep as fara wa y
as possible from thea irbags.
RObser vethef ollowing information.
#Alw aysm akes uret hat ther ea reno
objects between thea irbag and the
ve hicle occupant.
To avo idrisk sr esulting from thed eployment of
th ea irbag:
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 81).
ROnl yhold thes teering wheel bythes teering
wheel rim. This all owsthe airbag tobe fully
deplo yed.
RAlw aysl ean agains tthe seat backres twhen
th ev ehicle is in motion. Do no tlean forw ards
or lean agains tthe door or side windo w.You
ma yotherwise be in thed eployment area of
th ea irbags.
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 irbag.
RIfch ildren ar etrave ling in thev ehicle,
obser vethea dditional no tes(→pag e45).
RAlw ayss towa nd secur eobject scorrectly. Objects in
thev ehicle interior ma ypreve nt an
airba gfromf unctioning cor rectly .There fore
alw ayse nsur ethat:
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).
RNo hardobjects, e.g. coat hangers, ar ehang‐
ing on theg rabh andles or coat hooks.
RNo accessories, suc hascup holders, are
attached tothev ehicle within thed eploy‐
men t area of an airbag, e.g. todoors, side
windo wsor side paneling.
RNo heavy ,sharp-edged or fragile objectsa re
in thep ockets of your clo thing. Stores uch
object sinas uitable place.
38
Occupant saf ety 

Reduce dairbag 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.
&
WARNING Risk of injury duetounsuita‐
ble seat co vers
Uns uitable seat co vers can obstruct or pre‐
ve nt thed eployment of thea irbags integra‐
te di ntot he seats.
Consequentl y,thea irbags cann otprotect
ve hicle occupants as they ared esigned to
do. In addition, theo peration of thea uto‐
matic front passenger airbag shutof fsyst em
could be restricted. Thisp oses an increased
ri sk of injur yorevenf atal injur y.
#Yous 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.
&
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 irbags replaced immediately.
St atus of thef ront passenger airbag
Po ints toremember when the front
passen gers eatiso ccupied
The au tomatic front passenger air bag shutof fis
abl etod etect whe ther thef ront passenger seat
is occupied byap erson or achild restra int sys‐
te m. The front passenger air bag is enabled or
deactivated accordingly.
When ins talling achild restra int sy stem on the
front passenger seat:
REnsure that thec hild restra int sy stem is posi‐
tioned cor rectl y.
Occupant saf ety 39 

PRE-SAFE®
Information on PRE-SAFE®(anticipatory
occupant pr otection)
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:
RTighten thes eat belts on thed rive r's seat
and front passenger seat.
RClose thes ide windo ws.
RVehicles with sliding sunroof: Closethe
sliding sunroof.
RVe hicles with memor yfunction: Movethe
front passenger seattoa morefavorable
seat position.
RVe hicles with multicontour seat: Increase
th ea ir pressur einthe seat side bols ters of
th es 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 hea ring.
* 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®measures
If an accident did no toccur ,the pre-e mptive
measures that weretaken ar ereversed. You
will need toper form certain settings your‐
self.
#If th es eat belt pre-tensioning is no treduced,
mo vethes eat backres tbacks lightl y.
The locking mechanism releases.
PRE- SAFE®PLUS (anticipa tory occupant pro‐
te ction plus)
PRE-SAFE®PLUS can de tect cer tain impacts,
particularly an imminent rear impact ,and take
pre-e mptivem easure stoprotect thev ehicle
occupants. These measures canno tnecessarily
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.
If an accidentd oes notoccur ,the pre-emp‐
tiv em easures that we retake na re re versed .
RIncre asingb rake pressur ewhen thev ehicle
is stationar y.This brak eapplication is can‐
celed automatically when thev ehicle pulls
aw ay.
PRE-SAFE
®PLUS sy stem limitationsRNo me asures ar eimp lemented:
-Ifth ev ehicle is backing up.
RThe brakes ar enotapplied:
-Whils tdriving.
44
Occupant saf ety 

#Todeactivate: pressthe& button on the
SmartK eytwice in rapid succession.
The batter ychec klam poft he SmartK ey
fl ashes twic ebrief ly and lightsupo nce.
#To activate: press anybutton on theS mart‐
Ke y.
% When thev ehicle is star tedw itht he Smart‐
Ke yint he stow agec ompartment of thec en‐
te rc onsole (
→pag e129) ,the SmartK ey
functions ar eautom atically activated.
Inserting/re moving the eme rgency key
#Press release knob 1.
Emer gency key2 is pushed out slight ly.
#Pull out emer gency key2 until it en gage s.
% Youc an use thee mer gency keyint his posi‐
tion toattac hthe SmartK eyont oak eyring.
#Press release knob 1again and remo vethe
emer gency key.
#Toinser t:inse rtthee mer gency keya lon g
th ei nside of theS martK eyuntil it enga ges.
#Press release knob 1and press in the
emer gency keyf ullyu ntil it en gage s.
Re placing the SmartK eybattery
&
DANG ER Serious damag etohealth
caused byswallowing batteries
Batteries contain toxic and cor rosiv es ub‐
st ances. Swallowing batte ries ma ycause
serious damag etohealth.
Ther eisar isk offata linjur y.
#Keep batteries out of ther eac hofc hil‐
dren.
#If batteries ar eswallowe d, seek medical
attention immediately.
* ENVIRONMEN
TALN OTEEnvironmental
damage causedbyimproper disposal of
batteries
Bat teries conta in pollutants. It is
illegal todispose of them wit hthe household
ru bbish.
#
Dispose of batteries in an
environmen tallyr esponsibl emanner.
Ta ke dischar gedb atteries toaq ualified
specialis tworks hop or toac ollection
pointf or used batteries.
Opening and closing 57 

ProblemPossible causes/consequences and MSolutions
RThe SmartKeyisfaulty.
#Ac tivat eKEYLESS-GO.
#Chec kthe SmartK eybatter yusing theb atter ychec klam pand replace if necessar y.
#Usethee mer gency keytol ockoru nlockthe vehicle .
#Ha ve thev ehicle and SmartK eycheckedataq ualified specialis tworks hop.
Switching thea utomatic locking feature
on/off
The vehicle is loc keda utomatically when the
ignition is switched on and thew heels ar eturn‐
ing fast erthan walkin gpace.
#Todeactivate: press and holdb utton1 for
appr oximatel yfives econds until an acoustic
signal sounds.
#To activate: press and hold button 2for
appr oximatel yfives econds until an acoustic
signal sounds.
Danger of being loc kedo ut when thef unction is
activated:
RIf th ev ehicle is being tows tarted/pushed.
ROn aroller dynamome ter.
62
Openin gand closing 

Observethen otes when opening (→pag e63)
and closing (→pag e64)thet runk lid.
% Awarning tone sounds whil ethe trunk lid is
opening or closing.
& WARNING Risk of burn scaused byah ot
ex haus tsystem
The vehicle exhaus tsystemc an become very
hot. If youu se HANDS- FREEACCESS, you
could burn yourself by touchingt heexhaust
sy stem.
#Alw ayse nsur ethat youo nly ma kea
kicking mo vement within thed etection
ra ng eoft he sensors.
*NO
TEDama getothev ehicle caused by
unin tentional lyopening thet runk lid
RWhen using an automatic car wash
RWhen using ahigh pressur ecleaner
#Deactivat eKEYLESS-GO or mak esure
th at theS martK eylocated is at least
10 ft(3 m) away from thev ehicle in
suc hsituations.
When making thek icking mo vement, mak esure
th at youa restanding firm ly on theg round you
could otherwise lose your balance, e.g .onice.
Re quirements:
RThe keyisb ehind thev ehicle.
RStand at leas t12in(30 cm) away from the
ve hicle while per form ing thek icking mo ve‐
ment.
RDo no tcome int ocontact wit hthe bumper
while making thek icking mo vement.
RDo no tcarry out thek icking mo vement too
slowl y.
RThe kicking mo vement mus tbetowards the
ve hicle and bac k.
1Sensordetection range
If se veralc onsecutiv ekickin gmovements are
no ts uccessful, waitte ns econds.
Sy stem borders
The sy stem ma ybeimpaired or ma ynotfunction
if:
RThe area around thes ensor is dirty ,e.g. road
salt.
RThe kickin gmovement is made using apros‐
th etic leg.
Opening and closing 67 

Correct driver' sseat position
&
WARNING Risk of injury from adjusting
th ev ehicle settings while thev ehicle is in
motion
Yo uc ouldlose cont roloft hevehicle in the
fo llowing situations:
Rifyo ua djus tthe driver's seat, theh ead
re stra int ,the steering wheel or them irro r
while thev ehicle is in motion
Rifyo uf asteny our seat belt whil ethe vehi‐
cle is in motion
#Befor estarti ngthee ngine: adjus tthe
driver's seat, theh ead restra int ,the
st eering wheel or them irro ra nd fasten
yo ur seat belt.
Obser vethef ollowing when adjusting steering
wheel 1,seat belt 2and driver's seat 3:
RYoua reas fara wa yfromt he driver's airbag
as possible.
RYo ua resittin ginan ormalupright position.
RYour thighs ar eslightly suppor tedbyt he seat
cushion.
RYo ur legs ar enotentirel ystret ch ed and you
can dep ress thep edals proper ly.
RThe bac kofyour head is suppor tedate ye
le ve lbyt he center of theh ead restra int.
RYo uc an hold thes teering wheel wit hyour
arms slig htlybent.
RYouc an mo veyour legs freel y.
RYouc an see all thed ispla ysinthei nstrument
clus terc lea rly.
RYo us hould ha veag ood overviewoft raffic
conditions.
RThe seatb elti sp ulle dsnug lyagains tthe
body and mus tberouted across thec enter
of your shoulder and across your hips in the
pelvic area.
Seats and stowing 81 

Seats
Adjustin gthe fron tseatm anuall yand elec‐
tricall y(withou tSeatC om fort Pa ckage)
&
WARNING Risk of becoming trapped if
th es eats ar eadjus tedbyc hildren
Childre ncould becom etrapped if they adjust
th es eats, particularly when unattended.
#When leaving thev ehicle, alw ayst ake
th eS martK eywit hyou and loc kthe
ve hicle.
#Ne verlea ve children unatte ndedint he
ve hicle.
The seats can be adjus tedw hen thei gnition is
switched off.
& WARNING Risk of becoming trapped
whe nadjusting thes eats
When youa djus tas eat,y ou or other vehicle
occupants could become trapped, e.g. on the
seat guide rail.
#Mak esurew hen adjustin gaseatthat
no oneh as anybody parts in thes weep
of thes eat.
Obser vethes afet yn otes on "Airbags "and "Chil‐
dren in thev ehicle".
&
WARNING Risk of accident duetot he
driver's seat no tbeing engaged
If th ed rive r's seat is no tengaged, it could
mo veunexpectedl ywhile thev ehicle is in
motion.
This could cause youtol ose control of the
ve hicle.
#Alw aysm akes uret hat thed rive r's seat
is engaged befor estartin gt he vehicle.
&
WARNING Risk of injury from adjusting
th ev ehicle settings while thev ehicle is in
motion
Yo uc ouldlose cont roloft hevehicle in the
fo llowing situations:
Rifyo ua djus tthe driver's seat, theh ead
re stra int ,the steering wheel or them irro r
while thev ehicle is in motion
Rifyo uf asteny our seat belt whil ethe vehi‐
cle is in motion
#Befor estarti ngthee ngine: adjus tthe
driver's seat, theh ead restra int ,the
st eering wheel or them irro ra nd fasten
yo ur seat belt.
&
WARNING Risk of becoming trapped if
th es eat height is adjus tedc arelessly
If yo ua djus tthe seat height carelessly ,you
or other vehicle occupants could be trapped
and thereb yinjured.
82
Seats and stowing