
#
Therefore, ha vedeplo yedp yrot echnic
se at belt tensioner simmedia tely
re placed at aqualified specialis twork‐
shop. Mercedes-Benz
recommends that youh avet he
ve hicle towe dtoaq ualified specialis tworks hop
af te rana ccident.
* NO
TEDama gecaused bytrapping the
seat belt If an unused seat belt is no
tfully retracted ,it
ma ybecome trappe dinthe door or in the
seat mechanism. #
Alw ayse nsur ethat an unused seat belt
is full yretra cted. Fa
stening and adju sting seat belts If
th es eat belt is pulled quickl yors harply,the
seat belt retractor lo cks. The seat belt stra pc an‐
no tbep ulled out an yfurther. #
Alw ayse ngag eseat belt tongue 2ofthe
seat belt int oseat belt buckle 1ofthec or‐
re sponding seat. #
Press and hold thes eat belt outle trelease
and slide seat belt outlet 3intot he desired
position. #
Letgooft he seat belt outle trelease and
ensur ethat seat belt outlet 3locksinto
position. Ve
hicles with PRE-SAFE ®
:if th ef ront seat belt
is no tpulled tight across your body ,the seat belt
adjustment ma yautomaticall yapply acertain
tigh tening forc e. Do no thold thes eat belt tightly
while it is adjusting .You can activat eand deacti‐
va te thes eat belt adjustmen tfunction using the
multimedia sy stem.
Ve hicles with automatic front passen ger
fron tairbag deacti vatio ns ystem:
* NO
TEDeployment of thes eat belt ten‐
sioner and side impact airba gwhent he
front passenger seat is unoccupied If
th es eat belt tongu eise ngaged in thes eat
belt buckle of theu noccupied front
passenger seat, thes eat belt tensioner and
th es ide impact airbag ma yalso deplo yinthe
ev ent of an acciden talong wit hother sys‐
te ms. #
Onlyone person should use eac hseat
belt at an yone time. Ve
hicles without automatic front passen ger
fron tairbag deacti vatio ns ystem: 36
Occupant saf ety

R
Suitable positioning of thec hild restra int sys‐
te m( →pag e54). PRE-SAFE
®
sy stem PRE-
SAFE®
(Pre-Crash Saf ety-Sy stem) PRE-
SAFE®
is able todetect cer tain critical driv‐
ing situations and implemen tpre-em ptivem eas‐
ures toprotect thev ehicle occupants.
PRE-SAFE ®
can implement thef ollowing meas‐
ures independentl yofeacho ther:
R Tightening thes eat belts on thed rive r's seat
and front passenger seat.
R Closing thes ide windo ws.
R Vehicles with sliding sunroof: closingthe
sliding sunroof.
R Vehicles with memor yfunction: moving
th ef ront passenger seat toam oref avo ura‐
ble seat position.
R Vehicles with multicontour seat: increas‐
ing thea ir pressur einthe seat side bols ters
of thes eat backrest. R
PRE-SAFE ®
Sound: pr ovided that them ulti‐
media sy stem is switched on, generates a
brie fnoise signa ltostimulat ethe innat epro‐
te ctiv em echanism of aperson's hea ring.
* NO
TEDama gecaused byobject sinthe
fo ot we ll or behin dthe 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. Re
versing theP RE- SAFE®
sy stem measures If an acciden
tdid no toccur ,the pre-em ptive
measures that we retake na re re versed.
Yo uw ill need toper form certains ettings your‐
self. #
Ifth 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
occupants. These measures canno tnecessarily
pr eve nt an imminent impact.
PRE-SAFE ®
PLUS can implement thef ollowing
measures independentl yofeacho ther:
R Tightening thes eat belts on thed rive r's seat
and front passenger seat.
R Activating ther ear hazar dwarning light sata
higher flashin gfrequ enc y.
R Increasing brak epressure when thev ehicle
is stationar y.This brak eapplication is cancel‐
led 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. Occupant saf
ety45

Key
Overvie
wofkeyfunctions &
WARNING Risk of accident and inju ry
due tochildren lef tunat tende dint he
ve hicle
If ch ildren ar eleftu nat tende dint hevehicle,
th ey could:
R ope ndoors,t hereb yendangering other
persons or road users.
R geto utofthev ehicle and be hit by
oncoming traf fic.
R ope rate ve hicle equipment and become
trapped, fore xamp le.
In addition ,children could also se tthe vehi‐
cle in motion, fore xamp le,by:
R releasing thep arking brake.
R shifting thea utomatic transmission out of
par kposition jor shifting manual trans‐
mission int oneutral.
R startin gthe engine. #
When leaving thev ehicle, alw ayst ake
th ek eywit hyou and loc kthe vehicle. #
Neverlea ve children and animals unat‐
te nde dint hevehicle. #
Keep thev ehicle keyo ut of reac hof
ch ildren. *
NO
TEDama getothek eycaused by
magnetic fields #
Keep thek eyaway from strong mag‐
netic fields. 1
Locks
2 Batter ychec klamp
3 Unloc ks
4 Opens/closes thet ailgate
The keyloc ks and unlo ckst he following compo‐
nents:
R The doors
R The tailgate
R The fuel filler flap
If yo udon otopen thev ehicle within appr ox‐
imatel y40seconds af teru nlocking:
R The vehicle is loc keda gain 66
Openin gand closing

R
Anti-thef tprotection is reactivated
Do no tkeep thek ey to gether wit helectronic
devices or me talo bjects. This can af fect the
ke y's functionalit y.
% If batter ychec klamp 2does no tlight up
af te rp ressing the% or& button, the
batter yisdischar ged.
Changing thek eybat tery ( →pag e68). Ac
tivating/deactivatin gthe acoustic lo cking
ve rification signal Multimedia sy
stem:
, Vehicle .
î Vehicle set-
tings .
Acoustic lock #
Activate Oor deacti vate ª thef unction. Ac
tivating/deactivatin gthe pani calarm Re
quirements:
% The panic alar mfunction is onl yavailable in
cer tain countries.
R The ignition is switched off. #
Toactivate: press button 1fora pprox‐
ima tely one second.
Av isual and audibl ealarmist riggered. #
Todeactivate: brieflyp ress but ton1again.
or #
Press thes tart/s topb utton on thec ockpit
(the keyisi nside thev ehicle). Changing
theu nlocking settings Po
ssible unlocking functions of thek ey:
R Central unlocking
R Unlocking thed rive r's door and fuel filler flap #
Toswitc hbetwe en settings: pressthe
% and& button ssimultaneousl yfor
appr oximatel ysix seconds until theb attery
ch eckl am pflashes twice.
If th eu nlocking function fort he driver's door
and fuel filler flap has been selec ted:
R Pressing the% button asecon dtime cen‐
trally unloc ksthev ehicle.
R Vehicles with KEYLESS-GO: ifyo ut ouch
th ei nner sur face of thed oor handle on the
driver's door ,onlyt he driver's door and fuel
fi ller flap ar eunlocked. Re
ducing the energy consu mptionoft hekey All
vehicles: ifyo udon otuse thev ehicle or a
ke yf or an extende dperio doft ime,youc an
re duce thee nergy consum ption of ther espec‐
tiv ek ey.T odos o, deactivat ethe keyf unctions. #
Todeactivate: pressthe& button on the
ke yt wice in rapid succession.
The batter ychec klam poft hekeyf lashes
twic ebrief ly and light suponce. #
Toactivate: press anybutton on thek ey. Opening and closing
67

#
Remo vethee mer gency key( →pag e68). #
Press release button 2down full yand slide
co ver 1inthed irection of thea rrow. #
Fold out co ver1inthed irection of the
ar row and remo ve. #
Remo vebatter ycompartment 3and take
out thed ischar gedb atter y. #
Inser tthe ne wbatter yintob atter ycompart‐
ment 3.O bservethep ositiv epole marking
in theb atter ycompartmen tand on theb at‐
te ry. #
Push in batter ycompartment 3. #
Re-attac hcover 1and push it until it
engages. Problems with
thek ey Problem
Possible causes/consequences and M MSolutions
Yo uc an no lon gerloc koru nlockthe
ve hicle. Po
ssible causes:
R The keyb atte ry is dischar gedorn early dischar ged.
R Ther eisi nterfere nce from apowe rful radio signal source.
R The keyisf aulty. #
Chec kthe batter yusing theb atter ychec klam pand replace if necessar y. #
Use thee mer gency keytol ockoru nlock. Opening and closing
69

Problem
Possible causes/consequences and M
MSolutions #
Have thek eycheckedataq ualified specialis tworks hop.
Yo uh ave lostak ey. #
Have thek eydeacti vatedataq ualified specialis tworks hop. #
If necessar y,ha ve thel oc ks changed as well. Doors
Note
sont he additional doo rlock The additional door loc
kisonlya vailable for
ve hicles fort he United Kingdom. &
WARNING Risk of inju ryto persons
inside thev ehicle when thea dditional
door loc kisactivated
If th ea dditional door loc kisactivated, the
door scan no longer be opened from the
inside.
If th er ea repersons in thev ehicle, they can
no longer le avet he vehicle, e.g. in hazardous
situations. #
Neverlea ve persons unattended in the
ve hicle, particularly children, elderly
person sorpersonsinneed of help. #
Ifth er ea repersons in thev ehicle, do
no ta ctivat ethe additional door loc k. The additional door loc
kisautomaticall yactiva‐
te d:
R Afterl ocking thev ehicle wit hthe key.
R Afterl ocking thev ehicle using KEYLESS-GO.
% Afterl ocking thev ehicle, theh ornc an be
operated foras horttime.
% Afterl ocking thev ehicle, pressing theb utton
to centrally unloc kthe vehicle from inside
will trigger an alar m(→pag e71). If
th ea dditional door loc kisactivated, thed oors
cann otbe opened from thei nside.
Yo uc an deactivat ethe additional door loc kby
deactivating thei nterior pr otection (→ page92). Un
locking/opening thed oor sfromt he inside #
United Kingdom onl y:obser vethen otes on
th ea dditional door loc k(→ pag e70). 70
Openin gand closing

#
Pull door handle 2.
Locking pin 1pops up when thed oor is
unloc ked. Centrall
ylocking and unlocking thev ehicle
from thei nside #
Tounlo ck:press button 1. #
Tolock: press button 2.
This does no tloc koru nlockthe fuel filler flap.
The vehicle is no tunloc ked:
R Ifyo uh ave lockedt he vehicle using thek ey. R
Ifyo uh ave lockedt he vehicle using KEY‐
LESS-GO. Locking and unlocking
thev ehicle wit hthe
mo bile phone (NFC) Re
quirements:
R The vehicle is equipped wit hthe "digital vehi‐
cle key" function.
R The "digital vehicle key" function is activated
via theM ercedes me connect weba pp:
http://www.mercedes.me.
R Asuitable mobile phone wit hNFC aerial
(Near Field Communication) and Secur eEle‐
ment.
R Asufficient charge status on them obile
phone. On some mobile phones, thef unction
is also available when theb atter yisd is‐
ch arge d.
% Youc an checkt he suitability of your mobile
phon ebye ntering thep hone number at
http://www.mercedes.me. Openin
gand closing 71

Information abouts
uitablemobilephones
can be obtained from your Mercedes-Benz
servic ecentr eorath ttp://www.mercedes-
benz.com/connect.
% Protectiv ecases around them obile phone
can impair thef unctionality.
% Youc an also loc korunlockthev ehicle with
ad igital vehicle keys ticker.
Fu rther information can be obtained at your
Mercedes-Ben zServic eCentr eorv ia
http://www.mercedes-benz.com/connect.
% The function is on lyavailable in combination
wit hM ercedes me connec tand on lyin cer‐
ta in countries.
If th ev ehicle has been par kedf or longer than
tw ow eeks, theN FC aerial in thed oor handle is
deactivated. #
Pull door handle.
The NFC aerial is activated. #
Touc ht he door handle on thed rive r's door in
th ea reaw hereN FC aerial 1is located with
th ep artoft he mobile phone wher ethe NFC
aerial is located.
The vehicle is loc kedoru nlockeda lternately.
If yo ul ose your mobile phone, deactivat ethe
"digital vehicle key" servic einMercedes me con‐
nect via http://www.mercedes.me. %
Mercedes-Ben zrecommends that youc arry
th ee mer gency keyinc aseoff unction
re strictions. Lo
cking/unlocking thev ehicle wit hKEY‐
LESS-GO Re
quirements:
R The keyiso utside thev ehicle.
R The dis tance betwee nthe keya nd thev ehicle
does no texceed 1m.
R The driver's doo rand thed oor at whic hthe
door handle is used ar eclosed. 72
Opening and closing