
PRE-SAFE
®
PLUS can implement thefo llowing
measures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Activating there ar hazard warning lights at a
higher flashing frequenc y.
R Increasing brake pressure when theve hicle
is stationar y.This brake application is cancel‐
led automatically when theve hicle pulls
aw ay.
If an accident did not occur, the pre-em ptive
measures that we retake n are reve rsed.
Sy stem limits
The sy stem will not initiate any action in thefo l‐
lowing situations:
R when reve rsing
or
R when theve hicle is towing a trailer and there
is a risk of a rear impact The sy
stem will not initiate any braking applica‐
tion in thefo llowing situations:
R whilst driving
or
R when entering or exiting a parking space
while using Active Parking Assist Fu
nction of 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 rdsth e cent reoftheve hicle. It does this by
ra pidly inflating an air cushion in the outer seat
side bols ter of the seat backrest on the side on
which the impact is anticipated. This increases
th e dis tance between the door and theve hicle
occupant.
If PRE-SAFE ®
Impulse Side has been deplo yed or
is faulty, thePRE-SAFE impulse side inoperative
See Owner's Manual (/page 633) display mes‐
sage appears. Au
tomatic measures af ter an accident
Depending on the type and se verity of the acci‐
dent, and depending on theve hicle's equipment,
th efo llowing measures can be implemen ted, for
ex ample:
R automatic braking (post-collision brake)
R activating the hazard warning lights
R triggering an automatic emer gency call
(/ page 468)
R switching off the engine
To restart theve hicle, switch the ignition off
and switch it back on (/ page174).
Depending on the type and se verity of the
accident, it is possible that theve hicle can
no longer be star ted.
R switching off the fuel supply
R unlocking theve hicle doors
R lowe ring the side windo ws
R displaying the emer gency guide in the multi‐
media sy stem display
R switching on the interior lighting Occupant saf
ety51

Fu
nction of the post-collision brake
Depending on the accident situation, the post-
collision brake can minimise the se verity of a fur‐
th er collision or evenavo id it.
If an accident is de tected, the post-collision
brake can implement automatic braking. When
th eve hicle has come toast andstill, the electric
parking brake is automatically applied.
The driver can cancel automatic braking bytak‐
ing thefo llowing actions:
R braking more stronglythan automatic brak‐
ing
R fully depressing the accelerator pedal with
fo rce Safely transporting
children in theve hicle Alw
ays obser vewhen children are tr avelling
in theve hicle %
Also strictly obser vethe saf ety no tesfo rthe
specific situation. In this wa yyo u can recog‐
nise po tential risks and avoid dangers if chil‐
dren are tr avelling in theve hicle
(/ page 53). Be diligent
Bear in mind
that neglecting tosecure a child in
th ech ild restra int sy stem may ha veserious con‐
sequences. Alw ays be diligent in securing a child
carefully before everyjou rney.
To impr oveprotection forch ildren younger than
12 years old or under 1.50 m in height,
Mercedes-Benz recommends you obse rvethe
fo llowing information:
R Alw ays secure thech ild in a child restra int
sy stem suitable forth is Mercedes-Benz vehi‐
cle.
R The child restra int sy stem must be appropri‐
ate tothe age, weight and size of thech ild.
R The vehicle seat must be suitable forfitting a
ch ild restra int sy stem (/ page 59).
Ac cident statistics show that children secured
on there ar seats are general lysafer than chil‐
dren secured on the front seats. Forth is reason,
Mercedes-Benz strongly advises that youfit a
ch ild restra int sy stem toare ar seat. Generic
term"child restra int sy stem"
The generic term child restra int sy stem is used
in this Owner's Manual. A child restra int sy stem
is, forex ample:
R a baby car seat
R are ar wa rd-f acing child seat
R afo rw ard-facing child seat
R ach ild boos ter seat with a backrest and seat
belt guide
Mercedes-Benz recommends using a child
boos ter seat with a backrest.
The child restra int sy stem must be appropriate
to the age, weight and size of thech ild.
Observing la wsand legal requirements
Alw ays obser vethe legal requ irements when
using a child restra int sy stem in theve hicle.
Make sure that thech ild restra int sy stem is
appr oved in accordance with theva lid test speci‐
fi cations and guidelines. Further information can
be obtained at a qualified specialist workshop.
Mercedes-Benz recommends that you use a
Mercedes-Benz Service Centre forth is purpose. 52
Occupant saf ety

Only use appro
vedch ild restra int sy stems
Only child restra int sy stems that meet thefo l‐
lowing UNECE standards are permit tedfo r use in
th eve hicle:
R UN-R44
R UN-R129 (i-Size child restra int sy stems)
Information on child restra int sy stem appr oval
categories and de tails on the appr oval label on
th ech ild restra int sy stem (/ page 60). De
tecting risks, avoiding dan ger Securing sy
stems forch ild restra int sy stems
in theve hicle
Only use thefo llowing securing sy stems forch ild
re stra int sy stems:
R the ISOFIX or i-Size mounting brac kets
R theve hicle's seat belt sy stem
R theTo pTe ther anchorages
Fitting an ISOFIX or an i-Size child restra int sys‐
te m is prefer red. Simply attaching
tothe securing rings on the
ve hicle can reduce therisk of fitting thech ild
re stra int sy stem incor rectly.
When secu ring a child with the integrated seat
belt of the ISOFIX or i-Size child restra int sys‐
te m, alw ays comply with the permissible gross
we ight forth ech ild and child restra int sy stem
(/ page 66).
Ad vantage of a rear wa rd-facing child
re stra int sy stem
It is preferable totranspo rta baby or a small
ch ild in a suitable rear wa rd-facing child restra int
sy stem. In this case, thech ild sits in the oppo‐
site direction tothe direction of tr avel and faces
ba ckwa rds.
Babies and small children ha vecompa ratively
we ak neck muscles in relation tothe size and
we ight of their head. The risk of injury tothe cer‐
vical spine during an accident can be reduced in
a re ar wa rd-facing child restra int sy stem. Alw
ays secure a child restra int sy stem cor‐
re ctly &
WARNING Risk of inju ryor death caused
by incor rect ins tallation of thech ild
re stra int sy stem
If th ech ild restra int sy stem is incor rectly
ins talled on a suitable seating position, it
cannot per form its intended pr otective func‐
tion.
In particular, thech ild cannot be restra ined
in theeve nt of an accident, heavy braking or
a sudden change of direction. #
Alw ays comply with the manufacturer's
ins tallation instructions forth ech ild
re stra int sy stem and its cor rect use. #
Makesure that the entire base of the
ch ild restra int sy stem alw aysre sts on
th e sitting sur face of the seat. #
Never place objects, e.g. cushions,
under or behind thech ild restra int sys‐
te m. Occupant saf
ety53

#
Alw ays use child restra int sy stems with
th e original co ver designed forth em. #
Alw aysre place damaged co vers with
ge nuine co vers. &
WARNING Risk of inju ryor death due to
unsecured child restra int sy stems in the
ve hicle
If th ech ild restra int sy stem is not cor rectly
ins talled or secured, it could release, in par‐
ticular, in theeve nt of an accident, sudden
braking or a sudden change in direction.
The child restra int sy stem could be flung
around and hit vehicle occupants. #
Alw ays ins tallch ild restra int sy stems
cor rectl y,eve n when not in use. #
Alw ays comply with thech ild restra int
sy stem manufacturer's ins tallation
instructions. R
Alw ays obser vethech ild restra int sy stem
manufacturer's ins tallation and operating instructions as
well as theve hicle-specific
information:
- Fitthe ISOFIX or i-Size child restra int sys‐
te m to there ar seat (/ page 66).
- Secure thech ild restra int sy stem with the
seat belt on there ar seat (/ page72).
- Secure thech ild restra int sy stem with the
seat belt on the front passenger seat
(/ page 75). Obser vethe specific
instructions forth ere ar wa rd-facing and
fo rw ard-facing child restra int sy stems
(/ page 74).
If th e front passenger seat is occupied,
ensure, bo thbefore and during the jour‐
ne y,that thest atus of the front
passenger airbag is cor rect forth e cur‐
re nt situation (/ page 47).
R Obse rveth ewa rning labels in theve hicle
interior and on thech ild restra int sy stem.
R Also secure TopTe ther if present. Do not alter
thech ild restra int sy stem &
WARNING Risk of inju rydue toaltera‐
tions tothech ild restra int sy stem
The child restra int sy stem may no longer
function as it is supposed toifyo u make
alterations or attach objects toit, e.g. toys or
unsuitable accessories. This poses an
increased risk of injury!
Ne ver alter thech ild restra int sy stem. Only
attach accessories which the manufacturer
of thech ild restra int sy stem has authorised
especially forth is ch ild restra int sy stem. Mercedes‑Benz
recommends Mercedes-Benz
care products for cleaning child restra int sys‐
te ms recommended byMercedes-Benz. 54
Occupant saf ety

Securing with
theve hicle seat belt We
ight category
Type 1
Ty pe appr oval number Order number
2
1 Manu facturer: Britax Römer .2 With colour code 9H95.
Catego ry0:
up to10 kgand up toappr ox. 6 months BA
BY SAFE plus II
E1 04 301 14 6 A 000
970 38 02
Catego ry0+:
up to13 kgand up toappr ox.15 months BA
BY SAFE plus II
E1 04 301 14 6 A 000
970 38 02
Catego ryI:
9 to 18 kgand from appr oximately 9 mon thsto
4 ye ars DUO plus
E1 04 301
13 3 A 000
970 43 02
Catego ryII/III:
15 to36 kgand from appr oximately 4 to12
ye ars KIDFIX XP
E1 04 301 304
A 000
970 49 02
Catego ryII/III:
15 to36 kgand from appr oximately 4 to12
ye ars AMG KIDFIX XP
E1 04 301 304
A 000
970 33 02 58
Occupant saf ety

Overview of suitable seats in
theve hicle forfitting a child restra int sy stem Securing sy
stems forch ild restra int sy stems Ve
hicle seat
Left/right rear seat
Preferred securing sy stem:
® ISOFIX child seat securing sy stem
(/ page 62)
or
° i-Sizechild seat securing sy stem
(/ page 65)
¯ Also secure TopTe ther if present
(/ page 68) Alternative securing sy
stem:
R Vehicle seat belt (/ page 70)
Fr ont passenger seat
Securing system:
R Vehicle seat belt (/ page 70) Be sure
toobser ve:
R Ifth e front passenger seat is occupied, ensure,
bo th before and during the journe y,that thest a‐
tus of the front passenger airbag is cor rect forthe
cur rent situation (/ page 47).
R Notes on automatic front passenger airbag shut‐
off (/ page 45). Occupant saf
ety59

Ve
hicle seat
Centre rear seat
Securing system:
R Vehicle seat belt (/ page 70)Appr
oval catego ries forch ild restra int sys‐
te ms On
lyuse appr ovedch ild restra int sy stems
Only child restra int sy stems that meet thefo l‐
lowing UNECE standards are permit tedfo r use in
th eve hicle:
R UN-R44
R UN-R129 (i-Size child restra int sy stems)
Identification on thech ild restra int sy stem
In fo rm ation about the appr oval categor y,we ight
category and appr oval number, forex ample, is
on the appr oval label on thech ild restra int sys‐
te m.
There may be fur ther information such as the
ISOFIX size categories, depending on the
appr oval category of thech ild restra int sy stem. Appr
oval catego ries in accordance with UN-
R44 Example of an appr
oval label R
Universal: child restra int sy stems in the
"Universal" category are appr oved for ins tal‐
lation in vehicles. They can be used, in
accordance with overviews ofthe suitability
of seats for securing child restra int sy stems,
on seats labelled U,UF or IUF.
The identification IUF refers to ISOFIX child
re stra int sy stems in the "Universal" categor y.
These child restra int sy stems must also be
secured using TopTe ther or support points.
R Semi-Universal: child restra int sy stems in
th e "Semi-Universal" category may only be
used if theve hicle and vehicle seat are lis ted
in thech ild restra int sy stem manufacturer's
ve hicle model list.
R Vehicle-specific: child restra int sy stems in
th e "vehicle-specific" category may only be
used if theve hicle and vehicle seat are lis ted60
Occupant saf ety

in
thech ild restra int sy stem manufacturer's
ve hicle model list.
Appr oval catego ries in accordance with UN-
R129 Example of an appr
oval label
R i‑Size: child restra int sy stems in the "i‑Size"
category are appr ovedfo r ins tallation in vehi‐
cles with i‑Size mounting brac kets. They can be used, in accordance wi
thove rviews ofthe
suitability of seats for securing child restra int
sy stems, on seats labelled i‑U.
The identification i‑U refers to i‑Size child
re stra int sy stems in the "Universal" categor y.
These child restra int sy stems must also be
secured using TopTe ther or support points.
Obser vethe suitability of vehicle seats
Depending on the appr oval categor y,there are
fo rw ard-facing and rear wa rd-facing child
re stra int sy stems. Their use can be restricted for
cer tain vehicle seats:
R Suitability of seats for securing ISOFIX child
re stra int sy stems (/ page 62).
R Suitability of seats for securing i‑Size child
re stra int sy stems (/ page 65).
R Suitability of seats for securing belt-secu red
ch ild restra int sy stems (/ page 70) Occupant saf
ety61