length MERCEDES-BENZ GLS SUV 2020 Owners Manual

In addition,
the operation of the automatic
front passenger airbag shutoff could be
re stricted. #
You should on lyuse seat co vers that
ha ve been appr oved forth e cor respond‐
ing seats byMercedes-Benz. &
WARNING Risk of inju rydue tomalfunc‐
tioning sensors in the door
The function of the airbags can be impaired
due tomodifications or incor rect wo rkper‐
fo rm ed on the doors or door trim, or if the
doors are damaged. #
Never modify the doors or parts of the
doors. #
Alw ays ha vewo rkon the doors or door
trim car ried out at a qualified specialist
wo rkshop. &
WARNING Risk of inju rydue todeplo yed
airbag
A deplo yed airbag no longer of fers any pro‐
te ction. #
Have theve hicle towe dto aqu alified
specialist workshop in order tohave the
deplo yed airbag replaced. Ha
ve deplo yed airbags replaced immediately. St
atus of the front passenger front airbag Fu
nction of the automatic front passenger
airbag shu toff
The automatic front passenger airbag shutoff is
able todetect whe ther the front passenger seat
is occupied bya person or a child restra int sys‐
te m. The front passenger airbag is enabled or
disabled accordingly. &
WARNING Risk of inju ryor death due to
objects under the co-driver seat
Objects trapped under the co-driver seat can
inter fere with the function of the automatic
co-driver airbag shutoff or damage the sys‐
te m. #
Do not store any objects under the co-
driver seat. #
When the co-driver seat is occupied,
make sure that no objects are trapped
under the co-driver seat. When
fitting a child restra int sy stem tothe front
passenger seat, alw ays make sure of thefo llow‐
ing:
R Ensure that thech ild restra int sy stem is posi‐
tioned cor rectly (/ page 59).
R Alw ays comply with thech ild restra int sys‐
te m manufacturer's ins tallation instructions.
R Never place objects (e.g. cushions) under or
behind thech ild restra int sy stem.
R Fully retract the seat cushion length adjust‐
ment.
R The entire base of thech ild restra int sy stem
must alw aysre st on the sitting sur face of the
front passenger seat.
R The backrest of thefo rw ard-facing child
re stra int sy stem must, as far as possible, be
re sting on the seat backrest of the front
passenger seat. 48
Occupant saf ety

shutoff
checked and repaired immediately at a
qu alified specialist workshop.
St atus display
If th 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 for
th e cur rent situation.
Af terfitting a rear wa rd-facing child restra int
sy stem tothe front passenger seat:
PA SSENGER AIR BAG OFF must be lit continu‐
ousl y. &
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. When
fitting a child restra int sy stem tothe front
passenger seat, obser vetheve hicle-specific
information (/ page73).
Depending on thech ild restra int sy stem and the
st ature of thech ild, thePA SSENGER AIR BAG
OFF indicator lamp may be off. In this case, do
not fit th ere ar wa rd-facing child restra int sy stem
to the front passenger seat.
Ins tead, fit th ere ar wa rd-facing child restra int
sy stem toa suitable rear seat.
Af terfitting a forw ard-facing child restra int
sy stem tothe front passenger seat: depend‐
ing on thech ild restra int sy stem and thest ature
of thech ild, PASSENGER AIR BAG OFF may be lit
continuously or be off. Alw ays obser vethefo l‐
lowing information. &
WARNING Risk of inju ryor death due to
incor rect positioning of thefo rw ard-
fa cing child restra int sy stem
If yo u secure a child in a forw ard-facing child
re stra int sy stem on the front passenger seat
th at is positioned too close tothe cockpit, in
th eev ent of an accident, thech ild could:
R come into con tact wi th theve hicle inte‐
ri or if thePA SSENGER AIR BAG OFF indi‐
cator lamp is lit, forex ample
R bestru ck bythe airbag if thePA SSENGER
AIR BAG OFF indicator lamp is off. #
Alw ays mo vethe front passenger seat
as far back as possible and fully retract
th e seat cushion length adjustment.
While doing so, alw ays make sure that
th e shoulder belt stra p is cor rectly
ro uted from the seat belt outlet of the
ve hicle tothe shoulder belt guide on
th ech ild restra int sy stem. The shoulder
belt stra p must be routed forw ards and
down wards from the seat belt outlet. If
necessar y,adjust the seat belt outlet Occupant saf
ety51

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

The
tailgate can open or close unin tentionally in
th efo llowing situations:
R A person's arms or legs are moving in the
sensor de tection range, e.g. when polishing
th eve hicle or picking up objects.
R Objects are mo ved or placed behind theve hi‐
cle, e.g. tensioning stra ps or luggage.
R Clamping stra ps, tarp aulins or other co ver‐
ings are pulled overth e bumper.
R A pr otective mat with a length reaching over
th e boot sill down into the de tection range of
th e sensors is used.
R The pr otective mat is not secured cor rectly.
R Workis being done on the trailer hitch, trail‐
ers or rear bicycle rack s.
Deactivate theke y functions (/ page 79) or do
not car rytheke y about your person in such sit‐
uations. Limiting
the opening angle of the tailgate Ac
tivating the opening angle limiter
Yo u can limit the opening angle of theta ilgate in
th eto p half of its opening range up toappr ox‐
imately 20 cm before the end position. #
Stop the opening procedure of theta ilgate at
th e desired position. #
Press and hold the closing button on theta il‐
ga te until you hear a sho rtacoustic signal.
The opening angle limiter will be activated.
The tailgate will then stop in thestored posi‐
tion when opened.
To open thetai lgate full y,pull the handle on the
outside of theta ilgate again af ter it has stopped
automaticall y.
Deactivating the opening angle limiter #
Press and hold the closing button on theta il‐
ga te until two sho rtacoustic signals sound. Re
leasing the tailgate in an emer gency Re
quirements:
R Only for Mercedes-Maybach vehicles. #
Remo vecover1. Opening and closing
91

Do not inter
change the head restra ints of the
front and rear seats. Otherwise, you will not be
able toadjust the height and angle of the head
re stra ints cor rectl y.
Ad just the head restra int fore -and-aft position so
th at it is as close as possible tothe back of your
head. &
WARNING Risk of inju ryor death due to
an incor rect seat position
The seat belt does not of ferth e intended
le ve l of pr otection if you ha venot mo vedthe
seat backrest toan almost vertical position.
Yo u could slip beneath the seat belt and
injure yourself. #
Adjust the seat proper lybefore com‐
mencing your journe y. #
Alw ays ensure that the seat backrest is
in an almost vertical position and that
th e shoulder belt is routed across the
centre of your shoulder. &
WARNING Risk of inju rydue toexc es‐
sive stra in on the grab handle
If yo u apply your full body weight tothe grab
handle or pull it abruptl y,the grab handle
may be damaged or become loose from its
anchorage. #
Use the grab handles only tostabilise
th e seating position or toassist in get‐
ting in and out of the seat. 1
Head restra int height
2 Seat backrest inclination
3 Seat height
4 Seat cushion length
5 Seat cushion inclination
6 Seat fore -and-aft position #
Save the settings with the memory function
(/ page 128). Seats and
stowing 107

Ad
justing the rear seats electrical ly*
NO
TEDama getothere ar seat armrest
when folding the cent reseat backrest
fo rw ard If
th ere ar seat armrest is folded down, it can
be damaged when the cent reseat backrest
is folded forw ard. #
Foldthere ar seat armrest upwards
before folding the cent reseat backrest
fo rw ard. The middle seat backrest is adjus
tedto ge ther
with the left seat. 1
Head restra int height
2 Seat backrest inclination
3 Seat fore -and-aft position #
Save the settings with the memory function
(/ page 129). Ad
justing the reclining rear seats electrical ly The
reclining rear seats are on the driver's and
front passenger sides. 1
Head restra int height
2 Head restra int fore -and-aft position
3 Seat ba ckrest inclination
4 Combined seat cushion inclination and
length 11 0
Seats and stowing

5
Combined seat cushion inclination and
length
6 Fore-and-aft position of the leg rest
7 Angle of the leg rest #
Save the settings with the memory function
(/ page 129).
% The leg rest will fold down if overloaded. If
th is is the case, fold up the leg rest and
engage it. Setting
the fully reclined position Re
quirements:
R The po wer supply is switched on. #
Toset the fully reclined position: press
button 1.
R The rear seat will mo veinto the fully
re clined position.
R The rear seat head restra int will mo ve.
R The leg rest will rise.
R The front passenger seat will mo veas far
fo rw ards as possible. R
The front passenger seat head restra int
will be comple tely retracted.
R The front passenger seat ba ckrest will
mo veas farfo rw ards and as far down as
it will go. #
Toresto rethest andard seat settings:
press button 1.
or Seats and
stowing 111

th
eve hicle is stationar y.When you pull away
again, the hazard warning lights will switch off
automatically at appr oximately 10km/h. Yo u
can also switch off the hazard warning lights
using the hazard warning button. AT
TENTION ASSI STFu
nction of ATTENTION ASSI ST
AT TENTION ASSIST assists you on long, mon oto‐
nous journe ys, e.g. on mo torw ays and trunk
ro ads. If ATTENTION ASSIST de tects indicators
of fatigue or increasing lapses in concentration
on the part of the driver, it suggests taking a
brea k.
AT TENTION ASSIST is only an aid. It cannot
alw ays de tect fatigue or lapses in concentration
in time. The sy stem is not a substitute for a well-
re sted and attentive driver. On long journe ys,
ta ke regular breaks in good time that allow for
adequate recuperation.
Yo u can choose between two settings:
R Standard: normal sy stem sensitivity. R
Sensitive: higher system sensitivity. The
driver is warned earlier and the attention
le ve l de tected byATTENTION ASSIST is adap‐
te d according ly.
If dr owsiness or increasing lapses in concentra‐
tion are de tected, theATTENTION ASSIST: Take
a break! warning appears in the Instrument Dis‐
pla y.Yo u can ackn owledge the message and
tak e a break where necessar y.Ifyo u do not take
a break and ATTENTION ASSIST continues to
de tect increasing lapses in concentration, you
will be warned again af ter a minimum of
15 minutes. Yo
u can ha vethefo llowing status information for
AT TENTION ASSIST displa yed in the assis tance
menu of the on-board computer:
R The length of the journey since the last
break.
R The attention le vel de term ined byATTENTION
ASSIS T:
- the fuller the circle, the higher the atten‐
tional le vel de term ined
- asyour attention wanes, the circle in the
centre of the display becomes smaller
If AT TENTION ASSIST is unable tocalculate the
attention le vel and cannot issue a warning, the
System suspended messageappears.
If a warning is given in the Instrument Displa y,
th e multimedia sy stem of fers to sear chfor a rest
area. You can select a rest area and start naviga‐
tion tothis rest area. This function can be activa‐
te d and deactivated in the multimedia sy stem.
If AT TENTION ASSIST is deactivated, theÛ
symbol appears in the assis tance graphic in the
Instrument Display when the engine is running.
AT TENTION ASSIST is activated automatically 232
Driving and parking

cle and
there is a risk of a lateral collision, a
wa rning is issued and the segments light up in
colour in the displa y.
The segment colour changes depending on the
dis tance tothe de tected obs tacle:
R Yello w: appr oximately 30 - 60 cm
R Red:less than appr oximately 30 cm
In order for lateral front or rear segments tobe
displa yed, theve hicle must firs t tr ave l a dis tance
of at least half of theve hicle length. Once the
ve hicle has tr avelled the length of theve hicle, all
of the lateral front and rear segments can be dis‐
pla yed. Pa
rking Assist PARKTRONIC display: vehicles
without a 360° Camera
1 Operational front and rear
2 Operational front, rear and sides
3 Obstacle de tected at the front right (yellow)
and rear (red) Pa
rking Assist PARKTRONIC display: vehicles
with a 360° Camera
1 Operational front and rear
2 Operational front, rear and sides
3 Obstacles de tected at the front right (red)
Sa ved obs tacles on the sides are dele ted in the
fo llowing situations, forex ample:
R You park theve hicle and switch off the igni‐
tion.
R You open the doors.
Af terth e engine is restar ted, obs tacles on the
sides must be de tected again before a new
wa rning can be issued. 286
Driving and parking

%
The maximum articulation angle depends on
th e length of the trailer. This is calculated by
th e sy stem bydriving theve hicle forw ards,
including cornering. Before the length of the
trailer has been calculated, the maximum
articulation angle is appr oximately 23°. The
longer the trailer is, the higher the maximum
articulation angle (max. appr oximately 60°).
Using Trailer Manoeuvring Assist #
Press button 1. #
Shift toreve rsege ar k.
The camera image is shown in the media dis‐
pla y. #
Toadjust the articulation angle: select ¸.
Swipe left or right on the media display or
to uchpad tochange the articulation angle.
or #
Toactivate thest ra ightening manoeuvre:
select º.
The sy stem calculates the articulation angle
in such a wayth at the direction of the trailer
at the time of activation is maintained. There
is a short counter steering mo vement of the
trailer while theve hicle is reve rsed, which
th en guides it back tothe desired line. In this
wa y,theve hicle is aligned stra ight with the
trailer and, at the same time, the direction of
th e trailer is maintained. #
Accelerate and brake as requ ired.
% Pay attention toyour sur roundings and be
re ady tobrake at all times. Tr
ailer hitch Note
s on trailer operation *
NO
TEMercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. Obser
vethefo llowing no tes on theto ngue
we ight:
R Do not use a tongue weight that exceeds or
fa lls below the permissible tongue weight
R Use a tongue weight as close as possible to
th e maximum tongue weight
Do not exceed thefo llowing values:
R Perm issible towing capacity
R Perm issible rear axle load of theto wing vehi‐
cle
R Perm issible gross weight of theto wing vehi‐
cle
R Perm issible grossweight of the trailer
R Maximum permissible speed of the trailer Driving and parking
295