Page 53 of 521

#
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.
Sy stem limitations
The sy stem will no tinitiat eanyaction in thef ol‐
lowing situations:
R when reve rsing
The sy stem will no tinitiat eanybraking applica‐
tion in thef ollowing situations:
R whils tdriving
or
R when entering or exitin gap arkin gspace
while using ActiveP arking Assist Children in
thev ehicle Note
sont he saf etransportation of children &
WARNING Risk of accident and inju ry
due tochildren lef tunat tende dint he
ve hicle
If yo ul eave children unat tende dint hevehi‐
cle, they ma ybea bletos etthev ehicle in
motion, fore xamp leby:
R Releasing thep arking brake.
R Shifting thet ransmission out of park
position j.
R Startin gthe engine.
In addition, they ma yoperat evehicle equip‐
ment. #
Neverlea ve children and animals unat‐
te nde dint hevehicle. #
When leaving thev ehicle, alw ayst ake
th ek eywit hyou and loc kthe vehicle.
This also applies tomobil ephones if the
"Digital Car Keyint he smartphone" 50
Occupant saf ety
Page 67 of 521

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.
Moreo ver,ch ildren could also se tthe vehicle
in motion by,for example:
R releasing thep arking brake.
R shifting thea utomatic transmission out of
par kposition j.
R startin gthe engine. #
Neverlea ve children and animals unat‐
te nde dint hevehicle. #
When leaving thev ehicle, alw ayst ake
th ek eywit hyou and loc kthe vehicle.
This also applies tomobil ephones if the
"Digital Vehicle Keyint he smartphone"
function is activated via theM ercedes
me connect weba pp. #
Keep thek eyso ut of ther eac hofc hil‐
dren. This also applies tomobile
phones if the" Digital Vehicle Keyint he
smartphone" function is activated via
th eM ercedes me connect weba pp. *
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 theb ootlid
The keyloc ks and unlo ckst he following compo‐
nents:
R Doo rs
R Boo tlid
R Glov eb ox
R Fuelfiller flap 64
Opening and closing
Page 71 of 521

Problem
Possible causes/consequences and M
MSolutions #
Chec kthe batter yusing theb atter ychec klam pand replace if necessar y. #
Use thee mer gency keytol ockoru nlock. #
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 dint hefollowing situations:
R The vehicle is loc kedu sing thek ey.
R The vehicle is loc kedu sing KEYLESS-GO.
% Afterl ocking youc an issue asignal wit hthe
horn.
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 (→ page93). Un
locking/opening thed oor sfromt he inside Un
ited Kingdom onl y:obser vethen otes on the
additional door loc k(→pag e68). 68
Opening and closing
Page 157 of 521

Re
fuelling 1
Fuelfiller flap
2 Brac ketfor thef uel filler cap
3 Tyre pressur etable
4 QR code forr escue card
5 Fuel type #
Press fuel filler flap 1. #
Turn thef uel filler cap anti-clockwise and
re mo veit. #
Inser tthe fuel filler cap int obrack et 2 . #
Comp lete ly inse rtthef uel pum pnozzle into
th et ank filler nec k,hook in place and refuel. #
Onlyfillthef uel tank unti lthe fuel pum pnoz‐
zle switches off. Pa
rking Switching of
fthe vehicle &
WARNING Risk offire caused byhot
ex haus tsystemp arts
Flammable material suc hasleaves, grass or
twigs ma yignit eift heyc ome int ocontact
wi th hotp arts of thee xhau stsystem or
ex haus tgas flow. #
Park thev ehicle so that no flammable
material can com eintoc ontact wi thhot
ve hicle components. #
In particular ,donotpar kond rygrass‐
land or har vested grain fields. &
WARNING Risk of accident and inju ry
due tochildren lef tunat tende dint he
ve hicle
If yo ul eave children unat tende dint hevehi‐
cle, they ma ybea bletos etthev ehicle in
motion, fore xamp leby:
R Releasing thep arking brake.
R Shifting thet ransmission out of park
position j.
R Startin gthe engine.
In addition, they ma yoperat evehicle equip‐
ment. #
Neverlea ve children and animals unat‐
te nde dint hevehicle. #
When leaving thev ehicle, alw ayst ake
th ek eywit hyou and loc kthe vehicle.
This also applies tomobil ephones if the
"Digital Car Keyint he smartphone"
function is activated via theM ercedes
me connect weba pp. 15 4
Driving and pa rking