MERCEDES-BENZ EQS 2023 Workshop Manual

You can determine the status of the rear seat belt
by the color of the seat symbol on the driver\bs dis- play as follows:
= Gray: the rear seat belt is not fastened.
= Green: the seat belt tongue of a rear seat belt
is engaged in the seat belt buckle of the dis- played seat.
= Red: the person in the rear seat has unfas-
tened their seatbelt.
Function of the PASSENGER AIR BAG indicator
lamps (front passenger air bag)
The PASSENGER AIR BAG indicator lamps display
the status of the front passenger air bag.
If the front passenger seat is occupied or a child
restraint system is installed on the front
passenger seat, you must make sure both before and also during the journey that the status of thefront passenger air bag is correct for the situation.
&WARNING Risk of potentially fatal injuries
due to objects trapped under the front
passenger seat
Objects trapped under the front passenger seat may interfere with the function of the
automatic front passenger air bag shutoM or
damage the system.
Do not stow any objects under the front
passenger seat.When the front passenger seat is occu-
pied, ensure that no objects have
become trapped beneath the front
passenger seat.
Self-test: when the vehicle is switched on, both
the PASSENGER AIR BAG ON and OFF indicator
lamps light up simultaneously for several seconds.
Aser the self-test, you can determine the status of
the front passenger air bag as follows:
= Front passenger air bag disabled: PASSENGER
AIR BAG OFF lights up continuously.
The front passenger air bag will not be
deployed in the event of an accident. If
Occupant safety49

PASSENGER AIR BAG OFF is lit, no one may
use the front passenger seat.
If a rearward-facing child restraint system is installed on the front passenger seat,
PASSENGER AIR BAG OFF must be lit continu-
ously.
= Front passenger air bag enabled: PASSENGER
AIR BAG ON lights up for up to 60 seconds or
until both the PASSENGER AIR BAG ON and
OFF indicator lamps go out.
The front passenger air bag may be deployed during an accident. If the front passenger air
bag is in this status, no rearward-facing child
restraint system may be installed on the front
passenger seat.\bIf you are driving with a child in the vehicle, observe the information in the chapter "Chil-
dren in the vehicle" (  page 62)&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.Both before and during the journey,
ensure that the status of the front
passenger airbag is correct.
Malfunction of the automatic front passenger air
bag shutoM
The PASSENGER AIR BAG OFF indicator lamp and
the u restraint system indicator lamp light up
simultaneously.
In this case, no one may use the front passenger seat and no child restraint system may be instal-
led on the front passenger seat.
Have the automatic front passenger air bag shut-
oM checked and repaired immediately at a quali-
Ned specialist workshop.
Be sure to also observe the following further rela-
ted subjects:
= Child restraint system on the front passenger
seat (  page 66)
Deactivating or activating the front passenger air
bag
The automatic front passenger air bag shutoM can
deactivate or activate the front passenger air bag
and front passenger knee bag according to the situation.
This happens automatically as a result of the clas-
siNcation of the person or child restraint system
on the front passenger seat.
You cannot manually deactivate or activate the front passenger air bag.
50Occupant safety

Also observe the following information:
= The status of the front passenger air bag, see
"Function of the PASSENGER AIR BAG indica-
tor lamps" (  page 49)
= Notes on using the front passenger seat, see
"Information on the automatic front passenger air bag shutoM ( page 51)
= If you are driving with a child in the vehicle,
observe the chapter "Children in the vehicle"
(  page 62)
Information on the child restraint system
When installing a child restraint system, observe
the notes in "Children in the vehicle"
(  page 62).
Notes on the child restraint system on the front passenger seat
&WARNING Risk of injury or fatal injuries if
the front passenger air bag is enabled
If the front passenger air bag is enabled, a
child on the front passenger seat may be
struck by the front passenger air bag in the
event of an accident.NEVER use a rearward-facing childrestraint system on a seat with an ENA-
BLED FRONT AIR BAG. This can result in
the DEATH of or SERIOUS INJURY to the CHILD.
Also pay particular attention to the notes on rear-
ward-facing or forward-facing child restraint sys- tems on the front passenger seat (  page 66).
Notes for vehicles with belt air bag
If you install a child restraint system on the les or
right rear seat, pay particular attention to the
information on the belt air bag in the rear seat
belt: (  page 60).
Information on the automatic functions of the
restraint system
Function of the automatic front passenger air bag
shutoM
A person on the front passenger seat must
observe the following information:
= Sit correctly (  page 45).
= Fasten the seat belt correctly (  page 46).
The automatic front passenger air bag shutoM can
activate or deactivate the front passenger air bag
and knee bag according to the situation.
Make sure you observe the following information: = Status of the front passenger air bag: see
"Function of the PASSENGER AIR BAG indica-
tor lamps" (  page 49).
= When installing a child restraint system on the
front passenger seat, observe the vehicle-spe-ciNc information (  page 66).
Occupant safety51

Status of the front passenger air bag in relation to
the stature of the person:
= Front passenger air bag disabled: PASSENGER
AIR BAG OFF lights up continuously.
The front passenger air bag will not be
deployed in the event of an accident. If
PASSENGER AIR BAG OFF is lit, no one may use the front passenger seat.
= Front passenger air bag enabled: PASSENGER
AIR BAG ON lights up for up to 60 seconds or
until both the PASSENGER AIR BAG ON and
OFF indicator lamps go out.
The front passenger air bag may be deployed
during an accident. Observe the following information on the correct seat position
(  page 45).
Vehicles with rear seats: a person of smaller
stature should use a rear seat.System limits
The front passenger air bag may otherwise be dis- abled by mistake, for example, in the following sit-
uation:
= 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 lised oM the seat surface.*NOTE Deployment of components of the
restraint system when the front passenger
seat is unoccupied
In an accident, the components of the restraint system may deploy unnecessarily on
the front passenger side if:
= There are heavy objects on the front
passenger seat.
= The seat belt tongue is engaged in the seat
belt buckle of the front passenger seat and
the front passenger seat is unoccupied.
Store objects in a suitable place.Only one person should use each seat
belt at any one time.
Depending on the accident situation detected, the window air bag on the front passenger side maydeploy. The air bag will be deployed regardless of
whether the front passenger seat is occupied.
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.
52Occupant safety

=Vehicles with multicontour seat: increasing the
lateral support by inOating the seat side bol-
sters 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
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 Pulse Side Inoperative
See Operator's Manual display message appears
(  page 443).
Occupant safety53

Seat belt adjustment function
Vehicles with PRE-SAFEn
: aser you have fastened
the seat belt of the front seat, it may adjust itself
against your body by pulling at the shoulder until somewhat tight. Do not hold the seat belt tightlywhile it is adjusting.
This function is a reminder that all vehicle occu-
pants must wear their seat belts correctly.
You can activate and deactivate the seat belt adjustment function using the multimedia system (  page 54).
Activating/deactivating seat belt adjustment via
the multimedia system
Multimedia system:
4 © 5
Settings 5
Vehicle
5 Occupant Protection
Activate or deactivate Belt adjustment.Overview of the automatic measures aser an acci-
dent
Depending on the type and severity of the acci-
dent, and depending on the vehicle\bs equipment, the following measures may be implemented, for
example:
= automatic braking (post-collision brake)
= activating the hazard warning lamps
= triggering an automatic emergency call
(  page 361)
= switching oM the drive system and high-volt-
age on-board electrical system
= unlocking the vehicle doors
= lowering the side windows
= displaying the emergency guide on the central
display
= switching on the interior lighting
Function of the post-collision brake aser an acci-
dent
Depending on the accident situation, the post-col- lision brake can minimise the severity of a further
collision or even avoid it.
If an accident is detected, the post-collision brake
can initiate automatic braking. When the vehicle 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
54Occupant safety

Purpose and function of the restraint system
Overview of deployment situations (restraint sys-tem)
Make sure that the following prerequisites in par-
ticular have been met so that the components of the restraint system are able to provide the inten-ded level of protection:
= Sit correctly (  page 45).
= Fasten the seat belt correctly (  page 46).
- Function of the seat belt warning lamp
(  page 48).
- Function of the rear seat belt status dis-
play (  page 48).
= The u restraint system warning lamp is not
lit up aser the self-test (  page 47).
= The PASSENGER AIR BAG indicator lamps dis-
play the correct status of the front passenger air bag (  page 49).
Depending on the detected deployment situation,
the components of the restraint system can be
activated or deployed independently of each
other:
= Emergency Tensioning Device: frontal impact,
rear impact, side impact, rollover
= Driver\bs air bag, front passenger air bag: fron-
tal impact
= Knee bag: frontal impact
= Side impact air bag: side impact
= Window curtain air bag: side impact, rollover,
frontal impact
= Belt air bag in the rear seat belt: frontal
impact
= PRE-SAFE n
Impulse Side: side impact
The installation location of an air bag is identiNed
by the AIRBAG symbol (  page 61).
Observe the information on the function of the restraint system (  page 55).Information on how the restraint system works
How the restraint system functions depends on
the severity of the impact detected and the appa- rent type of accident.
For more information about types of accidents, see "Overview of deployment situations"
(  page 55).
The activation thresholds for the components of
the restraint system are determined based on the evaluation of the sensor values measured at vari-
ous points in the vehicle. This process is pre-emp-
tive in nature. The triggering/deployment of the
components of the restraint system must take place in good time at the start of the collision.
Factors that can be seen and measured only aser
a collision has occurred cannot play a decisive
role in air bag deployment. Nor do they provide an indication of air bag deployment.
The vehicle may be deformed signiNcantly without
an air bag being deployed. This is the case if only parts that are relatively easily deformed are aMec-
ted and the rate of vehicle deceleration is not
high. Conversely, an air bag may be deployed
even though the vehicle suMers only minor defor-
Occupant safety55

mation. If very rigid vehicle parts such as longitu-dinal members are hit, this may result in suP-
ciently high levels of vehicle deceleration.
Depending on the apparent type of accident and
the detected deployment situation, Emergency
Tensioning Devices and/or air bags supplement
the protection oMered by a correctly worn seat
belt.
When enabled, an air bag can provide additional protection for the respective vehicle occupant.
Potential protection provided by each air bag:
= Knee bag: thigh, knee and lower leg
= Driver\bs air bag, front passenger air bag: head
and ribcage
= Window curtain air bag: head
= Side impact air bag: ribcage, also pelvis for
front seat occupants
However, no system available today can com- pletely eliminate injuries and fatalities in everyaccident situation. In particular, the seat belt and
air bag generally do not protect against objects penetrating the vehicle from the outside. It is alsonot possible to completely rule out the risk ofinjury caused by the air bag deploying.
Mercedes-Benz recommends that you have thevehicle towed to a qualiNed specialist workshop
aser an accident. Take this into account, particu-
larly if a Emergency Tensioning Device is triggered
or an air bag deployed.
If the Emergency Tensioning Devices are triggered
or an air bag is deployed, you will hear a bang,
and a small amount of powder may also be released:
= The bang will not generally aMect your hearing.
= In general, the powder released is not hazard-
ous to health but may cause short-term breathing diPculties to persons suMering from
asthma or other pulmonary conditions.
Provided it is safe to do so, leave the vehicle
immediately or open the window in order to
prevent breathing diPculties.
Air bags and pyrotechnic Emergency Tensioning
Devices contain perchlorate material, which may
require special handling or environmental protec-
tion measures. National guidelines regarding
waste disposal must be observed. In California,see https://dtsc.ca.gov/. Using the search func- tion, you will Nnd information on perchlorate, for
example.
Information on the limited protection provided by the restraint system
Risk due to the incorrect behavior of vehicle occu-pants
Every vehicle occupant must make sure of the fol- lowing in particular:
= They observe the information on the correct
seat position (  page 45).
= There are no heavy, sharp-edged or fragile
objects in the pockets of their clothing. Store
such objects in a suitable place.
&WARNING Risk of injury or death due to
an incorrect seat position
The seat belt does not oMer the intended level
of protection if you have not moved the seat backrest to an almost vertical position.
In particular, you could slip beneath the seat- belt and become injured.
56Occupant safety

Adjust the seat properly before begin-
ning your journey.Always ensure that the seat backrest is
in an almost vertical position and that
the shoulder belt is routed across the
center of your shoulder.
Risk due to objects in the vehicle interior
Every vehicle occupant must make sure of the fol-
lowing in particular:
= They observe the information on the correct
seat position (  page 45).
= There are no objects between the seat, door
and door pillar (B-pillar).
= There are no hard objects, e.g. coat hangers,
hanging on the grab handles or coat hooks.
= There are no heavy, sharp-edged or fragile
objects in the pockets of their clothing. Store
such objects in a suitable place.
&WARNING Risk of injury or death due to
blocked seat belt buckle or seat belt
anchorage
Objects next to the front seat that block the
seat belt buckle or the moving seat belt
anchorage on the front seat impair the func- tion of the Emergency Tensioning Devices.
Before starting the journey, make sure
that there are no objects around the seat
belt buckle or between the front seat
and door.&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.
The installation location of an air bag is identiNed
by the AIRBAG (  page 61) symbol.
Risk due to installing accessories
Do not attach accessories such as mobile naviga-
tion devices, mobile phones or cup holders, within the deployment area of an air bag, e.g. on the
cockpit, on the door, on the side window or on the side trim.
In addition, no connecting cables, tensioning
straps or retaining straps must be routed or attached to the vehicle within the deployment
area of an air bag. Always comply with the acces- sory manufacturer\bs installation instructions and,
in particular, the notes on suitable places for installation.
Occupant safety57

&WARNING Risk of injury or death due to
unsuitable protective covers
Unsuitable protective covers mean that air
bags can no longer protect vehicle occupants as they are designed to do.
Use only protective covers approved by
Mercedes-Benz for the seat in question.
In addition, the function of the automatic
passenger air bag deactivation may be restricted
by an unsuitable protective cover. If the front
passenger seat is occupied, ensure that the PASSENGER AIR BAG indicator lamps display thecorrect status of the front passenger air bag
(  page 49).
Risk due to pets in the vehicle interior
&WARNING Risk of accident and injury due
to animals les unsecured or unattended in
the vehicle
If you leave animals in the vehicle unattended or unsecured, they could possibly press but-
tons or switches.
An animal may:
= Activate vehicle equipment and become
trapped, for example
= Switch systems on or oM and endanger
other road users
Unsecured animals may be thrown around in
the vehicle in the event of an accident or sud-
den steering and braking maneuvers and injure vehicle occupants in the process.Never leave animals in the vehicle unat-
tended.Always correctly secure animals while
driving, e.g. using a suitable animal car-
rier.
Risk due to modiNcation, damage or wear to the
components of the restraint system
&WARNING Risk of injury or death due to
modiNcations to the restraint system
Vehicle occupants may no longer be protected
as intended if alterations are made to the
restraint system.
Never alter the parts of the restraint sys- tem.Never tamper with the wiring or any elec-
tronic component parts or their sos-
ware.If it is necessary to modify the vehicle to accom- modate a person with disabilities, contact an
authorized Mercedes-Benz Center for details.
USA only: for details, contact our Customer Assis-
tance Center on 1-800-FOR-MERCedes (1!