2023 MERCEDES-BENZ GLS Owners Manual

four wheel drive clutch odometer change key battery display maintenance schedule

Page 49 of 538

MERCEDES-BENZ GLS 2023 Owners Manual �=�T�h�e�r�e� �a�r�e� �n�o� �h�e�a�v�y�,� �s�h�a�r�p�-�e�d�g�e�d� �o�r� �f�r�a�g�i�l�e
�o�b�j�e�c�t�s� �i�n� �t�h�e� �p�o�c�k�e�t�s� �o�f� �y�o�u�r� �c�l�o�t�h�i�n�g�.� �S�t�o�r�e
�s�u�c�h� �o�b�j�e�c

=There are no heavy, sharp-edged or fragile
objects in the pockets of your clothing. Store
such objects in a suitable place.
Limitations of the protection provided by airbags
&WARNING Risk of injury due to modiNca-
tions to the cover of an airbag
If you change the cover of an airbag or attach
objects, e.g. even stickers, to it, the airbag may no longer function as intended.
Never modify the cover of an airbag.Do not attach any objects to the cover.
The installation location of an airbag is identiNed
by the AIRBAG symbol ( page 44).
Objects in the deployment area of an airbag may prevent the airbag from functioning correctly.
&WARNING Risk of injury from objects in
the deployment area of an airbag
Objects in the deployment area of an airbag
can hinder or prevent the correct deployment
of the airbag.
The airbag may then deploy in an uncontrolled manner and may even cause additional inju-
ries to the vehicle occupants by deploying.
This may be the case in particular if the airbag is integrated into the seat.
Always stow and secure objects cor-
rectly.Before commencing your journey, make
sure that no objects are stowed in the
deployment area of an airbag.&WARNING Risk of injury or death due to
the use of unsuitable seat covers
Due to unsuitable seat covers, the airbags
cannot protect vehicle occupants as intended.
In addition, the operation of the automatic
front passenger airbag shutoM could be
restricted.
You should only use seat covers that
have been approved for the correspond-
ing seats by Mercedes-Benz.&WARNING Risk of injury due to malfunc-
tioning sensors in the door
The function of the airbags can be impaired
due to modiNcations or incorrect work per-
formed on the doors or door trim, or if the
doors are damaged.
Never modify the doors or parts of the
doors.Always have work on the doors or door
trim carried out at a qualiNed specialist
workshop.&WARNING Risk of injury due to deployed
airbag
A deployed airbag no longer oMers any protec-
tion.
Occupant safety47

Page 50 of 538

MERCEDES-BENZ GLS 2023 Owners Manual ��H�a�v�e� �t�h�e� �v�e�h�i�c�l�e� �t�o�w�e�d� �t�o� �a� �q�u�a�l�iN�e�d
�s�p�e�c�i�a�l�i�s�t� �w�o�r�k�s�h�o�p� �i�n� �o�r�d�e�r� �t�o� �h�a�v�e� �t�h�e
�d�e�p�l�o�y�e�d� �a�i�r�b�a�g� �r�e�p�l�a�c

Have the vehicle towed to a qualiNed
specialist workshop in order to have the
deployed airbag replaced.Have deployed airbags replaced immediately.
Status of the front passenger front airbag
Function of the automatic front passenger air bag
shutoM
The automatic front passenger air bag shutoM is
able to detect whether the front passenger seat is
occupied by a person or a child restraint system. The front passenger air bag is enabled or disabled
accordingly.
&WARNING Risk of injury or death due to
objects under the co-driver seat
Objects trapped under the co-driver seat can
interfere with the function of the automatic
co-driver airbag shutoM or damage the system.
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 Ntting a child restraint system to the front
passenger seat, observe the vehicle-speciNc infor-
mation ( page 66). Also, always observe the
notes on rearward-facing or forward-facing child
restraint systems on the front passenger seat
( page 66).
A person on the front passenger seat must observe the following information:
= Fasten seat belts correctly ( page 40).
= Sit in an almost upright seat position with their
back against the seat backrest.
= Sit with their feet resting on the Ooor, if possi-
ble.
The front passenger air bag may otherwise be dis-
abled by mistake, for example, in the following sit- uations:
= The front passenger transfers their weight by
supporting themselves on a vehicle armrest.
= The front passenger sits in such a way that
their weight is raised from the seat surface.&WARNING Risk of injury or death due to a
disabled front passenger airbag
The front passenger airbag is disabled when
the PASSENGER AIR BAG OFF indicator lamp
is lit.
A person in the front passenger seat could
then, for example, come into contact with the
vehicle interior, especially if the person is sit- ting too close to the cockpit.
If the front passenger seat is occupied, always ensure that:
= The classiNcation of the person in the front
passenger seat is correct and the front
passenger airbag is enabled or disabled in
accordance with the person in the front
passenger seat.
= The front passenger seat has been moved
as far back as possible.
= The person is seated correctly.
48Occupant safety

Page 51 of 538

MERCEDES-BENZ GLS 2023 Owners Manual ��B�o�t�h� �b�e�f�o�r�e� �a�n�d� �d�u�r�i�n�g� �t�h�e� �j�o�u�r�n�e�y�,
�e�n�s�u�r�e� �t�h�a�t� �t�h�e� �s�t�a�t�u�s� �o�f� �t�h�e� �f�r�o�n�t
�p�a�s�s�e�n�g�e�r� �a�i�r�b�a�g� �i�s� �c�o�r�r�e�c�t�.

Page 52 of 538

MERCEDES-BENZ GLS 2023 Owners Manual �c�h�e�c�k�e�d� �a�n�d� �r�e�p�a�i�r�e�d� �i�m�m�e�d�i�a�t�e�l�y� �a�t� �a� �q�u�a�l�iN�e�d
�s�p�e�c�i�a�l�i�s�t� �w�o�r�k�s�h�o�p�.
�S�t�a�t�u�s� �d�i�s�p�l�a�y
�I�f� �t�h�e� �f�r�o�n�t� �p�a�s�s�e�

checked and repaired immediately at a qualiNed
specialist workshop.
Status display
If the front passenger seat is occupied, ensure,
both before and during the journey, that the sta- tus of the front passenger air bag is correct for
the current situation.
Aser Ntting a rearward-facing child restraint sys-
tem to the front passenger seat: PASSENGER AIR
BAG OFF must be lit continuously.&WARNING Risk of injury or fatal injury
when using a rearward-facing child
restraint system while the co-driver airbag
is enabled
If you secure a child in a rearward-facing child
restraint system on the co-driver seat and the
PASSENGER AIR BAG OFF indicator lamp is
oM, the co-driver airbag can deploy in the
event of an accident.
The child could be struck by the airbag.
Always ensure that the co-driver airbag is
disabled. The PASSENGER AIR BAG OFF
indicator lamp must be lit.NEVER use a rearward-facing child restraint system on a seat with an ENA-
BLED FRONT AIRBAG; DEATH or SERI-
OUS INJURY to the CHILD can occur.
When Ntting a child restraint system to the front
passenger seat, observe the vehicle-speciNc infor-
mation ( page 66).
Depending on the child restraint system and the stature of the child, the PASSENGER AIR BAG OFF
indicator lamp may be oM. In this case, do not Nt
the rearward-facing child restraint system to the front passenger seat.
Instead, Nt the rearward-facing child restraint sys-
tem to a suitable rear passenger compartment
seat.
Aser Ntting a forward-facing child restraint sys-
tem to the front passenger seat: depending on the
child restraint system and the stature of the child, PASSENGER AIR BAG OFF may be lit continuously
or be oM. Always observe the following informa-
tion.&WARNING Risk of injury or death due to
incorrect positioning of the forward-facing
child restraint system
If you secure a child in a forward-facing child
restraint system on the front passenger seat
that is positioned too close to the cockpit, in
the event of an accident, the child could:
= come into contact with the vehicle interior
if the PASSENGER AIR BAG OFF indicator
lamp is lit, for example
= be struck by the airbag if the PASSENGER
AIR BAG OFF indicator lamp is oM.
Always move the front passenger seat as
far back as possible and fully retract the
seat cushion length adjustment. While
doing so, always make sure that the
shoulder belt strap is correctly routed
from the seat belt outlet of the vehicle to
the shoulder belt guide on the child
restraint system. The shoulder belt strap
must be routed forwards and downwards50Occupant safety

Page 53 of 538

MERCEDES-BENZ GLS 2023 Owners Manual �f�r�o�m� �t�h�e� �s�e�a�t� �b�e�l�t� �o�u�t�l�e�t�.� �I�f� �n�e�c�e�s�s�a�r�y�,�a�d�j�u�s�t� �t�h�e� �s�e�a�t� �b�e�l�t� �o�u�t�l�e�t� �a�n�d� �t�h�e� �f�r�o�n�t
�p�a�s�s�e�n�g�e�r� �s�e�a�t� �a�c�c�

from the seat belt outlet. If necessary,adjust the seat belt outlet and the front
passenger seat accordingly.Always comply with the child restraint
system manufacturer\bs installation
instructions.
When Ntting a child restraint system to the front
passenger seat, observe the vehicle-speciNc infor-
mation ( page 66).
If a person is sitting on the front passenger seat:
PASSENGER AIR BAG OFF may be lit continuously
or be oM, depending on the person\bs stature.
A person on the front passenger seat must always observe the following information:
= If the front passenger seat is occupied by an
adult or a person with a stature corresponding
to that of an adult, the PASSENGER AIR BAG
OFF indicator lamp must be oM. This indicates
that the front passenger air bag is enabled.
If the PASSENGER AIR BAG OFF indicator
lamp is lit continuously, an adult or person
with a build corresponding to that of an adult must not use the front passenger seat.
Instead, they should use a rear passenger
compartment seat.
= If the front passenger seat is occupied by a
person of smaller stature (e.g. a teenager or
small adult), the PASSENGER AIR BAG OFF indicator lamp is either lit continuously or
remains oM, depending on the classiNcation.
- If the PASSENGER AIR BAG OFF indicator
lamp is oM: move the front passenger seat
as far back as possible, or the person of
smaller stature should use a rear
passenger compartment seat.
- If the PASSENGER AIR BAG OFF indicator
lamp is lit continuously: the person of
smaller stature should not use the front
passenger seat.&WARNING Risk of injury or death when
the PASSENGER AIR BAG OFF indicator
lamp is lit
If the PASSENGER AIR BAG OFF indicator lamp remains lit aser the self-test, the front
passenger airbag is disabled.
If the front passenger seat is occupied, always
ensure that:
= The classiNcation of the person in the front
passenger seat is correct and the front
passenger airbag is enabled or disabled in
accordance with the person in the front passenger seat.
= The person is seated properly with a cor-
rectly fastened seat belt.
= The front passenger seat has been moved
as far back as possible.
Be sure to also observe the following further rela-
ted subjects:
= Child restraint system on the front passenger
seat ( page 66)
Occupant safety51

Page 54 of 538

MERCEDES-BENZ GLS 2023 Owners Manual �P�R�E�-�S�A�F�E�n
� �s�y�s�t�e�m
�F�u�n�c�t�i�o�n� �o�f� �P�R�E�-�S�A�F�E �n
� �(�a�n�t�i�c�i�p�a�t�o�r�y� �o�c�c�u�p�a�n�t
�p�r�o�t�e�c�t�i�o�n�)
�P�R�E�-�S�A�F�E �n
� �i�s� �a�b�l�e� �t�o� �d�e�t�e

PRE-SAFEn
system
Function of PRE-SAFE n
(anticipatory occupant
protection)
PRE-SAFE n
is able to detect certain critical driv-
ing situations and implement pre-emptive meas-
ures to protect the vehicle occupants.
PRE-SAFE n
can implement the following meas-
ures independently of each other:
= Tightening the seat belts on the driver\bs seat
and front passenger seat.
= Closing the side windows.
= Vehicles with sliding sunroof: closing the slid-
ing sunroof.
= Vehicles with memory function: moving the
front passenger seat to a more favorable seat
position.
= Vehicles with memory function in the rear
passenger compartment: moving the outer
rear passenger compartment seats to a more
favorable seat position.
= Vehicles with multicontour seat: increasing the
air pressure in the seat side bolsters of the
seat backrest.
= PRE-SAFE n
Sound: provided that the multime-
dia system is switched on, generating a brief
noise signal to stimulate the innate protective mechanism of a person\bs hearing.*NOTE Damage caused by objects in the
footwell or behind the seat
The automatic adjustment of the seat position
may result in damage to the seat and/or the object.
Stow objects in a suitable place.
Backing up the PRE-SAFE n
system measures
If an accident did not occur, the pre-emptive
measures that were taken are reversed.
You will need to perform certain settings yourself.
If the seat belt pre-tensioning is not reduced,
move the seat backrest back slightly.
The locking mechanism releases.Function of PRE-SAFE n
PLUS (anticipatory occu-
pant protection plus)
PRE-SAFE n
PLUS can detect certain impacts, par-
ticularly an imminent rear impact, and take pre-
emptive measures to protect the vehicle occu-
pants. These measures cannot necessarily pre-
vent an imminent impact.
PRE-SAFE n
PLUS can implement the following
measures independently of each other:
= Tightening the seat belts on the driver\bs seat
and front passenger seat.
= Increasing brake pressure when the vehicle is
stationary. This brake application is canceled
automatically when the vehicle pulls away.
If an accident did not occur, the pre-emptive
measures that were taken are reversed.
System limits
The system will not initiate any action in the fol- lowing situations:
= When backing up
or
52Occupant safety

Page 55 of 538

MERCEDES-BENZ GLS 2023 Owners Manual �=�W�h�e�n� �t�h�e� �v�e�h�i�c�l�e� �i�s� �t�o�w�i�n�g� �a� �t�r�a�i�l�e�r� �a�n�d� �t�h�e�r�e
�i�s� �a� �r�i�s�k� �o�f� �a� �r�e�a�r� �i�m�p�a�c�t
�T�h�e� �s�y�s�t�e�m� �w�i�l�l� �n�o�t� �i�n�i�t�i�a

=When the vehicle is towing a trailer and there
is a risk of a rear impact
The system will not initiate any braking application
in the following situations:
= Whilst driving
or
= When entering or exiting a parking space while
using Active Parking Assist
Function of PRE-SAFE n
Impulse Side
If an imminent side impact is detected, PRE-
SAFE n
Impulse Side can pre-emptively move the
front seat vehicle occupant\bs upper body towards
the center of the vehicle. It does this by rapidly
inOating an air cushion in the outer seat side bol-
ster of the seat backrest on the side on which the impact is anticipated. This increases the distance
between the door and the vehicle occupant.
If PRE-SAFE n
Impulse Side has been deployed or
is faulty, the PRE-SAFE Impulse Side Inoperative
See Operator's Manual ( page 428) display
message appears.
Automatic measures aser an accident
Depending on the type and severity of the acci-
dent, and depending on the vehicle\bs equipment, the following measures can be implemented, forexample:
= Automatic braking (post-collision brake)
= Activating the hazard warning light system
= Triggering an automatic emergency call
( page 326)
= Switching oM the engine
To start the vehicle again, switch the vehicle
oM and on once more ( page 176). Depend-
ing on the type and severity of the accident,
you may no longer be able to start the vehicle.
= Switching oM the fuel supply system
= Unlocking the vehicle doors
= Lowering the side windows
= Displaying the emergency guide in the multi-
media system display
= Switching on the interior lightingFunction of the post-collision brake
Depending on the accident situation, the post-col- lision brake can minimize the severity of a furthercollision or even avoid it.
If an accident is detected, the post-collision brake
can implement automatic braking. When the vehi- cle has come to a standstill, the electric parking
brake is automatically applied.
The driver can cancel automatic braking by taking
the following actions:
= Braking more strongly than automatic braking
= Fully depressing the accelerator pedal with
force
Safely transporting children in the vehicle
Always observe when children are traveling in the
vehicle
\bAlso strictly observe the safety notes for the
speciNc situation. In this way, you can recog-
nize potential risks and avoid dangers if chil- dren are traveling in the vehicle
( page 54).Occupant safety53

Page 56 of 538

MERCEDES-BENZ GLS 2023 Owners Manual �B�e� �d�i�l�i�g�e�n�t
�B�e�a�r� �i�n� �m�i�n�d� �t�h�a�t� �n�e�g�l�i�g�e�n�c�e� �w�h�e�n� �s�e�c�u�r�i�n�g� �a
�c�h�i�l�d� �i�n� �t�h�e� �c�h�i�l�d� �r�e�s�t�r�a�i�n�t� �s�y�s�t�e�m� �m�a�y� �h�a�v�e

Be diligent
Bear in mind that negligence when securing a
child in the child restraint system may have seri-
ous consequences. Always be diligent in securing
a child carefully before every journey.
Never allow babies and children to travel sitting
on the lap of another vehicle occupant.
To improve protection for children younger than
12 years old or under 5 s (1.50 m) in height,
Mercedes-Benz recommends you observe the fol- lowing information:
= Always secure the child in a child restraint sys-
tem suitable for this Mercedes-Benz vehicle.
= The child restraint system must be appropriate
to the age, weight and size of the child.
= The vehicle seat must be suitable for Ntting a
child restraint system.
Accident statistics show that children secured on
the rear passenger compartment seats are gener- ally safer than children secured on the front seats.For this reason, Mercedes-Benz strongly advises
that you Nt a child restraint system to a rear
passenger compartment seat.The generic term child restraint system
The generic term child restraint system is used in this Operator\bs Manual. A child restraint systemis, for example:
= a baby car seat
= a rearward-facing child seat
= a forward-facing child seat
= a child booster seat with a backrest and seat
belt guide
Mercedes-Benz recommends using a child
booster seat with a backrest.
The child restraint system must be appropriate to
the age, weight and size of the child.
Observe laws and legal requirements
Always observe the legal requirements when
using a child restraint system in the vehicle.
Observe standards for child restraint systemsAll child restraint systems must meet the followingstandards:
= U.S. Federal Motor Vehicle Safety Standards
213 and 225= Canadian Motor Vehicle Safety Standards 213
and 210.2
ConNrmation that the child restraint system com-
plies with the standards can be found on an instruction label on the child restraint system. This conNrmation can also be found in the instal-
lation instructions that are included with the child
restraint system.
Detecting risks, avoiding danger
Securing systems for child restraint systems in the vehicle
Use only the following securing systems for child restraint systems:
= the ISOFIX securing rings
= the vehicle\bs seat belt system
= the Top Tether anchorages
Fitting an ISOFIX child restraint system is prefer-
red.
Simply attaching to the securing rings on the vehi- cle can reduce the risk of Ntting the child restraint
system incorrectly.
54Occupant safety

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