warning MERCEDES-BENZ GLS SUV 2020 Owner's Guide

Overview of suitability of
the seats for
attaching i‑Size child restra int sy stems
i‑Size is a standardised securing sy stem for spe‐
cially designed restra int sy stems.
° The symbol indicates seats suitable for
attaching an i‑Size child restra int sy stem
in accordance with UN R129
(/ page 60).
Child restra int sy stems that are permit ted
in accordance with UN R44 as per the
ISOFIX tables (/ page 62) or UN R129 as
per thefo llowing i‑Size tables may be
attached. i‑Size
child restra int sy stems (ISO/R2, ISO/
F2X, ISO/B2, ISO/B3) Fr
ont passenger
seat Left/right
rear seat
(second row of
seats only)
Xi ‑U
X Not suitable for an i-Size
ch ild restrai nt sy stem in the
"Universal" categor y.i-U Suitable
forfo rw ard-facing
and rear wa rd-facing i-Size
ch ild restrai nt sy stems in the
"Universal" categor y. Fi
tting an ISOFIX or i‑Size child restra int sys‐
te m on the rear seat &
WARNING Risk of accident if there ar
ben chseat, rear seat and seat backrest
are not engaged
The rear ben chseat, rear seat and seat back‐
re st may fold forw ards, even while theve hi‐
cle is in motion. R
As a result, theve hicle occupant will be
pressed into the seat belt with increased
fo rc e. The seat belt will not be able to
pr otect as intended and could cause
additional injur y.
R Objects or loads in the boot or load com‐
partment cann otbe restra ined bythe
seat backrest. #
Make sure that there ar ben chseat, the
re ar seat and the seat backrest are
engaged before everytrip. If
th e seat backrest is not engaged and loc ked in
place, this will be shown on the multifunction
display on the instrument clus ter (folding the
re ar seat back electrically) or there d lock verifi‐
cation indicator will be visible (folding there ar
seat back mechanically). 64
Occupant saf ety

&
WARNING Risk of inju ryor death if the
permissible gross mass of thech ild and
ch ild restra int sy stem toget her is excee‐
ded.
To o much load may be placed on the ISOFIX
or i‑Size child restra int sy stems and thech ild
may not be restra ined cor rectly in theeve nt
of an accident, forex ample. #
Ifth ech ild and thech ild restra int sys‐
te m toget her weigh more than 33 kg,
only use an ISOFIX or i‑Size child
re stra int sy stem with which thech ild is
secured with theve hicle seat belt. #
Also secure thech ild restra int sy stem
with theTo pTe ther belt, if available. Alw
ays comply with the information about the
mass of thech ild restra int sy stem:
R inthe manufacturer's ins tallation and operat‐
ing instructions forth ech ild restra int sy stem
used
R on a label on thech ild restra int sy stem, if
present Re
gular lych eck that the permissible gross mass
of thech ild and child restra int sy stem is still
complied with.
When fitting a child restra int sy stem, obser ve
th efo llowing:
O Alw
ays obser vethe cor rect use of the seats
and consider their suitability for attaching a
ch ild restra int sy stem.
ISOFIX child seat securing sy stem
(/ page 62)
or
i‑Size child seat securing sy stem
(/ page 64)
O Alw
ays comply with the manufacturer's
ins tallation and operating instructions for
th ech ild restra int sy stem used.
O Make sure
that thech ild's feet do not touch
th e front seat. If necessar y,mo vethe front
seat slightly forw ards.
®When fitting an ISOFIX child restra int sys‐
te m, also obser vethefo llowing:
O When using a baby car seat in
weight
gr oup 0/0+ and a rear wa rd-facing child re
stra int sy stem in weight group I on a
re ar seat: adjustthe front seat so that the
seat does not touch thech ild restra int sys‐
te m.
O When using a
forw ard-facing child
re stra int sy stem in weight group 1:
re mo vethe head restra int from there spec‐
tive seat, if possible. In addition, the back‐
re st of thech ild restra int sy stem must lie as
fl at as possible against the backrest of the
ve hicle seat.
Af terth ech ild restra int sy stem has been
re mo ved, replace the head restra ints again
immediately and adjust them cor rectly.
O When using a
child restra int sy stem on
a seat on theth ird row of seats: adjust
th e front seat so that it does not touch the
ch ild restra int sy stem and mo vethe seat
backrest of the front seat into an upright
position if necessar y.
O If
th e head restra int of thech ild seat cannot
be fully extended when it is ins talled in the
ve hicle, this will result in restrictions on the Occupant saf
ety65

Securing
TopTe ther &
WARNING Risk of inju ryor death if the
re ar seat backrests are not loc ked af ter
To pTe ther belts are fitted
The rear seat backrests may fold forw ards
when you are driving.
As a result, child restra int sy stems will no
longer be able toper form their intended pro‐
te ctive function. This may also cause addi‐
tional inju ries. #
Alw ays lock rear seat backrests af ter
fi tting TopTe ther belts. #
Obser vethe lock verification indicator. If
th e seat backrest is not engaged and loc ked in
place, this will be shown on the multifunction
display on the instrument clus ter (fold rear seat
back electrically) or there d lock verification indi‐
cator will be visible (fold rear seat back mechani‐
cally).
¯ Ifth ech ild restra int sy stem is equipped
with a TopTe ther belt: The
risk of injury may be reduced byTo p
Te ther. The TopTe ther belt enables an
additional connection between thech ild
re stra int sy stem attached with ISOFIX or
i‑Size and theve hicle.
The TopTe ther anchorages forth e second rowof
seats are located on there ar side of the two
outer rear seats on the second rowof seats. For
th eth ird row of seats, use theTo pTe ther
anchorage on there ar side of the seat backrest
on theth ird row of seats. Second
rowof seats 68
Occupant saf ety

Fr
ont passenger airbag disabled 1, 2
U, L
We ight category I: 9 to18 kg
Fr ont passenger airbag enabled 1
UF
Fr ont passenger airbag disabled 1, 2
U, L
We ight category II: 15to25 kg
Fr ont passenger airbag enabled 1
UF
Fr ont passenger airbag disabled 1, 2
U, L
We ight category III: 22 to36 kg
Fr ont passenger airbag enabled 1
UF
Fr ont passenger airbag disabled 1, 2
U, L
1 Ad just the seat cushion inclination so that the front
edge of the seat cushion is in the highest position and
th ere ar edge of the seat cushion is in the lo west posi‐
tion. 2 The
vehicle is equipped with automatic front
passenger airbag shutoff. The PASSENGER AIR BAG
OFF indicator lamp must be lit.
X Not suitable forch ildren in this we ight categor y.
U Suitable forch ild restra int sy stems of the "Univer‐
sal" category in this we ight categor y.
L Suitable for semi-universal child restra int sy stems
according totheta ble in "Recommended child
re stra int sy stems", or if theve hicle and the seat are
lis ted in thech ild restrai nt sy stem manufacturer's
ve hicle model list.
UF Suitable forfo rw ard-facing child restra int sy stems
of the "Universal" category in this we ight categor y. Securing
thech ild restra int sy stem with the
seat belt on there ar seat &
WARNING Risk of accident if there ar
ben chseat, rear seat and seat backrest
are not engaged
The rear ben chseat, rear seat and seat back‐
re st may fold forw ards, even while theve hi‐
cle is in motion.
R As a result, theve hicle occupant will be
pressed into the seat belt with increased
fo rc e. The seat belt will not be able to
pr otect as intended and could cause
additional injur y.
R Objects or loads in the boot or load com‐
partment cann otbe restra ined bythe
seat backrest. #
Make sure that there ar ben chseat, the
re ar seat and the seat backrest are
engaged before everytrip. If
th e seat backrest is not engaged and loc ked in
place, this will be shown on the multifunction
display on the instrument clus ter (folding the Occupant saf
ety71

Note
s onvehicles without automatic front
passen ger airbag shu toff St
icke r visible when the front passenger door
is open
Ve hicles without automatic front passenger air‐
bag shutoff ha vea special sticke r af fixe dto the
side of the cockpit on the front passenger side. Make sure
you obse rveth efo llowing informa‐
tion:
R Neverfit a rear wa rd-facing child restra int
sy stem tothe front passenger seat
R Alw aysfit a rear wa rd-facing child restra int
sy stem toa suitable rear seat
- Suitability of seats for attaching belt-
secured child restra int sy stems
(/ page 69)
- Secure thech ild restra int sy stem with the
seat belt on there ar seat (/ page71).
R Notes on rear wa rd-facing and forw ard-facing
ch ild restra int sy stems on the front
passenger seat (/ page73) Note
s onrear wa rd-facing and forw ard-facing
ch ild restra int sy stems on the front
passenger seat &
WARNING Risk of inju ryor death when
using a rear wa rd-facing child restra int
sy stem while the front passenger airbag
is enabled
If yo u secure a child in a rear wa rd-facing
ch ild restra int sy stem on the front passenger
seat and thePA SSENGER AIR BAG OFF indi‐
cator lamp is off, the front passenger airbag
can deploy in theev ent of an accident.
The child could be stru ck bythe airbag.
Alw ays ensure that the front passenger air‐
bag is disabled. The PASSENGER AIR BAG
OFF indicator lamp must be lit.
NEVER use a rear wa rd-facing child restra int
sy stem on a seat with an ENABLED FRONT
AIRB AG; DEAT H or SERIOUS INJU RYtothe
CH ILD can occur. Occupant saf
ety73

O
The
child restra int sy stem must not be put
under stra in between thero of and the seat
cushion and/or be fitted facing the wrong
direction.
O The
child restra int sy stem must not be put
under stra in by the head restra int. Adjust
th e head restra ints as appropriate.
O Ne
ver place objects (e.g. cushions) under or
behind thech ild restra int sy stem. #
Set the front passenger seat as far back as
possible and mo vethe seat into the highest
position if possible. #
Fully retract the seat cushion length adjust‐
ment. #
Adjust the seat cushion inclination so that
th e front edge of the seat cushion is in the
highest position and there ar edge of the
seat cushion is in the lo west position. #
Set the seat backrest tothe most vertical
position possible. #
Installth ech ild restra int sy stem.
The entire base of thech ild restra int sy stem
must alw aysre st on the sitting sur face of the
front passenger seat. #
Alw ays make sure that the shoulder belt
st ra p is cor rectly routed from the seat belt
outlet of theve hicle tothe shoulder belt
guide on thech ild restra int sy stem.
The shoulder belt stra p must be routed for‐
wa rds and down wards from the seat belt out‐
let. #
If necessar y,adjust the seat belt outlet and
th e front passenger seat according ly. Child saf
ety loc ks Ac
tivating or deactivating the child saf ety
lock for the rear doors &
WARNING Risk of accident and inju ry
due tochildren left unat tended in the
ve hicle
If ch ildren are left unsupervised in theve hi‐
cle, they could, in pa rticular:
R open doors, thereby endangering other
persons or road users.
R get out and be stru ck byoncoming traf‐
fi c.
R ope rate ve hicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion, forex ample by:
R releasing the parking brake.
R changing the transmission position.
R starting theve hicle. Occupant saf
ety75

#
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. #
Keep theve hicle key out of reach of
ch ildren. &
WARNING Dangertolife due toexpo‐
sure toextreme heat or cold in theve hi‐
cle
If people, particularly children, are exposed
to extreme temp eratures over an extended
pe riod of time, there is a risk of serious
injury or danger tolife. #
Never lea vepersons, children in partic‐
ular, unat tended in theve hicle. &
WARNING Risk of accident and inju ry
due tochildren left unat tended in the
ve hicle
If ch ildren are tra velling in theve hicle, they
could, in pa rticular:
R open doors, thereby endangering other
persons or road users.
R get out and be stru ck byoncoming traf‐
fi c.
R ope rate ve hicle equipment and become
trapped, forex ample. #
Alw ays activate the ins talled child
saf ety loc ksifch ildren are tra velling in
th eve hicle. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. Ve
hicles forth eUni ted Kingdom: obser vethe
impor tant sa fety no tes in the "No tes on the addi‐
tional door lock" section. There are
child saf ety loc ksforth ere ar doors
and there ar side wind ows.
The child saf ety lock on there ar doors secures
each door separatel y.The doors can no longer
be opened from the inside. #
Press the le ver in direction 1(activate) or
2 (deactivate). #
Make sure that thech ild saf ety loc ksare
wo rking properly. 76
Occupant saf ety

Ac
tivating or deactivating the child saf ety
lock for the rear side windo ws #
Toactivate/deacti vate:press button 2.
The rear side wind owcan be opened or
closed in thefo llowing cases:
R indicator lamp 1is lit: via the switch on
th e driver's door R
indicator lamp 1is off: via the switch on
th e cor responding rear door or driver's
door Note
s on pets in theve hicle &
WARNING Risk of accident and inju ry
due toanimals left unsecured or unat‐
te nded in theve hicle
If yo u lea veanimals in theve hicle unatten‐
ded or unsecured, they could press buttons
or switches, for ins tance.
An animal may:
R acti vate ve hicle equipment and become
trapped, forex ample
R swit chsystems on or off and endanger
ot her road users
Un secured animals may be throw n about the
ve hicle in theev ent of an accident, or sudden
st eering and braking manoeuvres, and injure
ve hicle occupants. #
Never lea veanimals unat tended in the
ve hicle. #
Alw ays cor rectly secu reanimals while
driving, e.g. using a suitable animal car‐
ri er. Occupant saf
ety77

Key
Overview of
key functions &
WARNING Risk of accident and inju ry
due tochildren left unat tended in the
ve hicle
If ch ildren are left unsupervised in theve hi‐
cle, they could, in pa rticular:
R open doors, thereby endangering other
persons or road users.
R get out and be stru ck byoncoming traf‐
fi c.
R ope rate ve hicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion, forex ample by:
R releasing the parking brake.
R changing the transmission position.
R starting theve hicle. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. #
Keep theve hicle key out of reach of
ch ildren. *
NO
TEDama getotheke y caused by
magnetic fields #
Keep theke yaw ay from strong mag‐
netic fields. Ve
hicle key
1 Locks
2 Indicator lamp 3
Unloc ks
4 Opens/closes theta ilgate
% If indicator lamp 2does not light up af ter
pressing theÜ orß button, the bat‐
te ry iswe ak or possibly dischar ged. Re place
th e battery as soon as possible.
Re place theke y bat tery ( / page 80).
The key loc ksand unlo cksth efo llowing compo‐
nents:
R doors
R Fuelfiller flap
R tailgate
If th eve hicle is not opened within appr oximately
40 seconds af ter unlocking, it loc ksagain. Anti-
th eft pr otection is primed again.
Do not keep theke yto ge ther with electronic
devices or me tal objects. This can af fect the
ke y's functionalit y.
Do not keep theke y in thete mp erature-contro l‐
led cup holder. Otherwise, theke y will not be
re liably de tected. 78
Opening and closing

#
Insert the new battery into battery compart‐
ment 3. Obser vethe positive pole marking
in the battery compartment and on the bat‐
te ry when doing this. #
Push in battery compartment 3.#
Re-attach co ver1 and push it until it
engages. Problems with
theke y,troublesho oting Yo
u can no lon ger lo ckor unlock theve hicle
Po ssible causes:
R The key bat tery iswe ak or dischar ged.
R The key is faulty. #
Check the battery using the indicator lamp
(/ page 78). #
Replace theke y bat tery, if necessary
(/ page 80). #
Use the emer gency keyto lock or unlock
(/ page 84). #
Have theke ych ecked at a qualified specialist
wo rkshop. There is inter
fere nce from a po werful radio
signal source
The key function is impaired by,fo rex ample:
R high voltage po wer lines
R mobile phones
R electronic devices (no tebooks, tablets)
R shielding due tome tal objects or induction
loops for electrical gatesystems or auto‐
matic bar riers #
Make sure that there is suf ficient di stance
between theke y and the po tential sou rce of
inter fere nce.
Yo u ha velost a key #
Have theke y deacti vated at a qualified spe‐
cialist workshop. #
If necessar y,ha ve the mechanical lock
re placed as well. Doors
Note
s onthe additional door lock The additional door lock is only
available for
ve hicles forth eUni ted Kingdom. &
WARNING Risk of inju ryto persons
inside theve hicle when the additional
door lock is activated
If th e additional door lock is activated, the
doors can no longer be opened from the
inside. #
Never lea vepersons, in particular chil‐
dren, unat tended in theve hicle. #
Ifth ere are persons in theve hicle, do
not activate the additional door loc k. The additional door lock is automatically activa‐
te d in thefo llowing situations:
R The vehicle is loc ked using thekey.
R The vehicle is loc ked using KEYLESS-GO. Opening and closing
81