2017 MERCEDES-BENZ S-Class COUPE seats

XPress the release button in the belt buckle,
hold the belt tongue firmly and guide the belt
back.
Seat belt adjustment
The seat-belt adjustment is an integral part of
the PRE-SAFE®convenience function. This func-
tion adjusts the driver's and front-passenger
seat belt to the upper body of the occupants.
The belt strap is tightened slightly when:
Rthe belt tongue is engaged in the buckle when
the seat-belt extender is retracted and
Rthe ignition is switched on
The seat-belt adjustment will apply a certain
retraction force if any slack is detected between
the vehicle occupant and the seat belt. Do not
hold on to the seat belt tightly while it is adjust- ing.
You can activate and deactivate the seat-belt
adjustment function using the multimedia sys-
tem. Information on activating and deactivating
the seat-belt adjustment function can be found
in the Digital Operator's Manual.
Belt warning for the driver and front
passenger
The 0076 seat belt warning lamp in the instru-
ment cluster is a reminder that all vehicle occu-
pants must wear their seat belts. It may light up
continuously or flash. In addition, there may be
a warning tone.
Regardless of whether the driver's seat belt has
already been fastened, the 0076seat belt warn-
ing lamp lights up for six seconds each time the
engine is started. If, after six seconds, the driver
or front-passenger seat belt has not been fas-
tened and the doors are closed, the 0076seat
belt warning lamp lights up. As soon as the driv- er's and front-passenger seat belts are fastened
or a front door is opened again, the 0076seat
belt warning lamp goes out.
If the driver's seat belt is not fastened after the
engine is started, an additional warning tone will
sound. The warning tone switches off after six
seconds or once the driver's seat belt is fas-
tened.
If the vehicle's speed exceeds 15 mph
(25 km/h) once and the driver's and front-
passenger seat belts are not fastened, a warning tone sounds. A warning tone also sounds with
increasing intensity for 60 seconds or until the driver or front passenger have fastened their
seat belts.
If the driver or front passenger unfasten their
seat belts during the journey, the seat belt warn-
ing is activated again.
Air bags
Introduction
The installation point of an air bag can be rec-
ognized by the AIR BAG symbol.
An air bag complements the correctly fastened
seat belt. It is no substitute for the seat belt. The
air bag provides additional protection in appli-
cable accident situations.
Not all air bags are deployed in an accident. The
different air bag systems function independ-
ently from one another (
Ypage 53).
However, no system available today can com-
pletely eliminate injuries and fatalities.
It is also not possible to rule out a risk of injury
caused by an air bag due to the high speed at
which the air bag must be deployed.
Important safety notes
GWARNING
If you do not sit in the correct seat position,
the air bag cannot protect as intended and
could even cause additional injury when
deployed. This poses an increased risk of
injury or even fatal injury.
To avoid hazardous situations, always make
sure that all of the vehicle's occupants:
Rhave fastened their seat belts correctly,
including pregnant women
Rare sitting correctly and maintain the great-
est possible distance to the air bags
Rfollow the following instructions
Always make sure that there are no objects
between the air bag and the vehicle's occu-
pants.
RAdjust the seats properly before beginning
your journey. Always make sure that the seat
is in an almost upright position. The center of
46Occupant safety
Safety

the head restraint must support the head at
about eye level.
RMove the driver's and front-passenger seats
as far back as possible. The driver's seat posi-
tion must allow the vehicle to be driven safely.
ROnly hold the steering wheel on the outside.
This allows the air bag to be fully deployed.
RAlways lean against the backrest while driv-
ing. Do not lean forwards or lean against the
door or side window. You may otherwise be in
the deployment area of the air bags.
RAlways keep your feet in the footwell in front
of the seat. Do not put your feet on the dash-
board, for example. Your feet may otherwise
be in the deployment area of the air bag.
RFor this reason, always secure persons less
than 5 ft (1.50 m)tall in suitable restraint sys-
tems. Up to this height, the seat belt cannot
be worn correctly.
If a child is traveling in your vehicle, also
observe the following notes:
RAlways secure children under twelve years of age and less than 5 ft (1.50 m)tall in suitable
child restraint systems.
RChild restraint systems should be installed on
the rear seats.
ROnly secure a child in a rearward-facing child
restraint system on the front-passenger seat
when the front-passenger front air bag is
deactivated. If the PASSENGER AIR BAG OFF
indicator lamp is permanently lit, the front-
passenger front air bag is deactivated
(
Ypage 42).
RAlways observe the instructions and safety
notes on the "Occupant Classification System
(OCS)" (
Ypage 49) and on "Children in the
vehicle" (Ypage 57) in addition to the child
restraint system manufacturer's installation
and operating instructions.
Objects in the vehicle interior may prevent
an air bag from functioning correctly. Before
starting your journey and to avoid risks resulting from the speed of the air bag as it deploys, make
sure that:
Rthere are no people, animals or objects
between the vehicle occupants and an air
bag.
Do not place any objects on the dashboard,
e.g. above the front-passenger front air bag.
Rthere are no objects between the seat, door
and B-pillar.
Rno hard objects, e.g. coat hangers, hang on
the grab handles or coat hooks.
Rno accessories, such as cup holders, are
attached to the vehicle within the depl oyment
area of an air bag, e.g. to doors, side windows,
rear side trim or side walls.
Rno heavy, sharp-edged or fragile objects are in
the pockets of your clothing. Store such
objects in a suitable place.
GWARNING
If you modify the air bag cover or affix objects
such as stickers to it, the air bag can no longer
function correctly. There is an increased risk
of injury.
Never modify an air bag cover or affix objects
to it.
GWARNING
Sensors to control the air bags are located in
the doors. Modifications or work not per-
formed correctly to the doors or door panel-
ing, as well as damaged doors, can lead to the
function of the sensors being impaired. The air
bags might therefore not function properly
anymore. Consequently, the air bags cannot
protect vehicle occupants as they are
designed to do. There is an increased risk of
injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door pan-
eling carried out at a qualified specialist work-
shop.
Front air bags
!Do not place heavy objects on the front-
passenger seat. This could cause the system
to identify the seat as being occupied. In the
event of an accident, the restraint systems on
the front-passenger side may be triggered
and have to be replaced.
Occupant safety47
Safety
Z

Driver's air bag0043deploys in front of the steer-
ing wheel. Front-passenger front air bag 0044
deploys in front of and above the glove box.
When deployed, the front air bags offer addi-
tional head and thorax protection for the occu-
pants in the front seats.
The PASSENGER AIR BAG OFF indicator lamp
informs you about the status of the front-
passenger front air bag (
Ypage 42).
The front-passenger front air bag will only
deploy if:
Rthe system, based on the OCS weight sensor
readings, detects that the front-passenger
seat is occupied (
Ypage 49). The
PASSENGER AIR BAG OFF indicator lamp is
not lit (
Ypage 49)
Rthe restraint system control unit predicts a
high accident severity
Knee bags
Driver's knee bag 0043deploys under the steering
column and front-passenger knee bag 0044under
the glove box. The driver's and front-passenger
knee bags are triggered together with the front
air bags.
The driver's and front-passenger knee bags
offer additional thigh, knee and lower leg pro-
tection for the occupants in the front seats.
Side impact air bags
GWARNING
Unsuitable seat covers can obstruct or pre-
vent deployment of the air bags integrated
into the seats. Consequently, the air bags
cannot protect vehicle occupants as they are designed to do. In addition, the operation of
the occupant classification system (OCS)
could be adversely affected. This poses an
increased risk of injury or even fatal injury.
You should only use seat covers that have
been approved for the respective seat by
Mercedes-Benz.
Front side impact air bags 0043and rear side
impact air bags 0044deploy next to the outer bol-
ster of the seat backrest.
When deployed, the side impact air bag offers
additional thorax protection. It also offers addi-
tional pelvis protection for occupants in the
front seats. However, it does not protect the:
Rhead
Rneck
Rarms
In the event of a side impact, the side impact air
bag is deployed on the side on which the impact
occurs.
The side impact air bag on the front-passenger
side deploys under the following conditions:
Rthe OCS system detects that the front-
passenger seat is occupied or
Rthe belt tongue is engaged in the belt buckle
of the front-passenger seat
If the belt tongue is engaged in the belt buckle,
the side impact air bag on the front-passenger
side deploys if an appropriate accident situation
occurs. In this case, deployment is independent
48Occupant safety
Safety

acceleration which occurs at various points in
the vehicle. This process is pre-emptive in
nature. Deployment should take place in good
time at the start of the collision.
The rate of vehicle deceleration or acceleration
and the direction of the force are essentially
determined by:
Rthe distribution of forces during the collision
Rthe collision angle
Rthe deformation characteristics of the vehicle
Rthe characteristics of the object with which
the vehicle has collided
Factors which can only be seen and measured
after a collision has occurred do not play a deci-
sive role in the deployment of an air bag. Nor do
they provide an indication of air bag deploy-
ment.
The vehicle can be deformed considerably, with-
out an air bag being deployed. This is the case if only parts which are relatively easily deformed
are affected and the rate of deceleration is not
high. Conversely, air bags may be deployed even
though the vehicle suffers only minor deforma-
tion. This is the case if, for example, very rigid
vehicle parts such as longitudinal body mem-
bers are hit, and sufficient deceleration occurs
as a result.
If the restraint system control unit detects a side
impact or if the vehicle rolls over, the applicable
components of the restraint system are activa-
ted independently of each other dependin g on
t

he apparent type of accident.
RSide impact air bags on the side of impact,
independently of the Emergency Tensioning
Device and the use of the seat belt on the
driver's seat and in the rear compartment
seats
The side impact air bag on the front-
passenger side deploys under the following
conditions:
-the OCS system detects that the front-
passenger seat is occupied or
-the belt tongue is engaged in the belt
buckle of the front-passenger seat
RWindow curtain air bag on the side of impact, independently of the use of the seat belt and
independently of whether the front-
passenger seat is occupied
REmergency Tensioning Devices, if the system
determines that deployment can offer addi-
tional protection in this situation
RWindow curtain air bags on the driver's and
front-passenger side in certain situations
when the vehicle rolls over, if the system
determines that deployment can offer addi-
tional protection to that provided by the seat
belt
iNot all air bags are deployed in an accident.
The different air bag systems work independ- ently of each other.
How the air bag system works is determined
by the severity of the accident detected,
especially the vehicle deceleration or accel-
eration and the apparent type of accident:
RFrontal collision
RSide impact
RRollover
PRE-SAFE®(anticipatory occupant
protection system)
Introduction
In certain hazardous situations, PRE-SAFE®
takes pre-emptive measures to protect the vehi-
cle occupants.
Important safety notes
!Make sure that there are no objects in the
footwell or behind the seats. There is a danger
that the seats and/or objects could be dam-
aged when PRE-SAFE
®is activated.
Despite your vehicle being equipped with the
PRE-SAFE
®system, the possibility of personal
injuries occurring as a result of an accident can-
not be eliminated. Always adapt your driving
style to suit the prevailing road and weather
conditions and maintain a safe distance from
the vehicle in front. Drive carefully.
Occupant safety55
Safety
Z

Function
PRE-SAFE®intervenes:
Rin emergenc ybraking situations, e.g. when
BA Sis activated
Rin critical driving situations, e.g. when physi-
cal limits are exceeded and th evehicl eunder-
steer sor oversteer sseverely
Rvehicles wit hth eDrivin gAssistanc epackage:
when adriver assistanc esystem intervenes
powerfully or th eradar sensor system detect s
an imminent danger of collision in certai nsit -
uation s
PRE-SAF E
®takes thefollowin gmeasures
depending on th ehazardous situation detected:
Rth efron tseat belt sare pre-tensioned.
Rif th evehicl eskids, th efron tside windows are
closed.
Rth efront-passenger seat is adjusted if it is in
an unfavorable position .
Rvehicles with amulticontour seat :th eair pres-
sure in th eside bolsters of th eseat backrest
is increased.
If th ehazardous situation passes without result -
ing in an accident, PRE-SAF E
®slackens thebelt
pre-tensioning .On vehicles wit hmulticontour
seats, th eair pressur ein th eside bolsters is
reduce dagain .All setting smade by PRE-SAF E
®
can then be reversed.
If theseat belt pre-tensioning is no treduced:
XMov eth eseat backrest or seat bac kslightly
when th evehicl eis stationary.
The seat belt pre-t ens
ioning is reduce
dand
th elockin gmechanism is released.
The seat-belt adjustmen tis an integral part of
th ePRE-SAF E
®convenience function .Informa-
tion about th econvenience function can be
foun dunder "Belt adjustment" (
Ypage 46).
PRE-SAFE®PLUS (anticipatory occu-
pant protection system PLUS)
Introduction
PRE-SAF E®PLUSis only available in vehicles
wit hth eDrivin gAssistanc epackage.
Usin gth eradar sensor system, PRE-SAF E
®
PLUSis able to detect that ahead-on or rear-end
collision is imminent .In certai nhazardous sit -uations, PRE-SAF
E
®PLUStakes pre-emptive
measures to protect th evehicl eoccupants.
Important safety notes
The intervention of PRE-SAF E®PLUScanno t
preven tan imminent collision .
The driver is no twarned when PRE-SAF E
®PLUS
intervenes.
PRE-SAF E
®PLUSdoes no tinterven eif th evehi-
cle is backin gup.
When driving ,or when parking or exiting apark -
ing spac ewit hassistanc efrom Active Parking
Assist ,PRE-SAF E
®PLUSwill no tapply th e
brakes.
Function
PRE-SAF E®PLUSintervenes in certai nsitua-
tion sif th eradar sensor system detect san
imminent head-on or rear-end collision .
PRE-SAF E
®PLUStakes th efollowin gmeasures
depending on th ehazardous situation detected:
Rif th eradar sensor system detect sthat a
head-on collision is imminent ,th eseat belt s
are pre-tensioned.
Rif th eradar sensor system detect sthat arear -
en dcollision is imminent :
-thebrak epressur eis increased if th edriver
applie sth ebrakes when th evehicl eis sta-
tionary.
-th eseat belt sare pre-tensioned.
The PRE-SAF E®PLUSbraking application is can -
celed:
Rif th eaccelerato rpedal is depressed when a
gear is engage d
Rif theris kof acollision passes or is no longer
detected
Rif DISTRONI CPLU Sindicates an intention to
pull away
If th ehazardous situation passes without result -
ing in an accident, th eoriginal setting sare
restored .
56Occupant safety
Safety

Replacechild restrain tsystems whic hhav e
been damaged or subjecte dto aload in an
acciden tas soo nas possible. Hav eth esecur-
ing systems on th echild restrain tsystem
checke dat aqualified specialist workshop,
before you instal l achild restrain tsystem
again .
The securin gsystems of child restrain tsystems
are:
Rth eseat belt system
Rth eLATCH-type (ISOFIX) securin grings
Rth eTop Tether anchorages
If it is absolutely necessar yto carry achild on
th efront-passenger seat ,be sur eto observ eth e
information on th e"Occupant Classification
Syste m(OCS)" (
Ypage 49). There you will also
fin dinformation on deactivating th efront-
passenger fron tair bag.
All child restrain tsystems mus tmee tth efol -
lowin gstandards :
RU.S. Federal Motor Vehicl eSafet yStandards
21 3and 22 5
RCanadian Motor Vehicl eSafet yStandards
21 3and 210. 2
Confirmation that th echild restrain tsystem cor-
responds to th estandards can be foun don an
instruction label on th echild restrain tsystem.
This confirmation can also be foun din th einstal -
lation instruction sthat are included wit hth e
child restrain tsystem.
Observ eth ewarning labels in th evehicl einte-
rio rand on th ech ild re
strain
tsystem.
LATCH-type (ISOFIX) child seat secur-
ing system
GWARNIN G
LATCH-type (ISOFIX) child restrain tsystems
do no toffer sufficien tprotective effec tfor
children whos eweigh tis greate rthan 48 lbs
(22 kg )who are secured usin gth esafet ybelt
integrate din th echild restrain tsystem. In th e
event of an accident, achild might no tbe
restrained correctly. This poses an increased
ris kof injury or eve nfatal injury.
If th echild weigh smor ethan 48 lbs (22 kg),
only use LATCH-type (ISOFIX) child restrain t
systems withwhic hth echild is also secured
wit hth evehicl eseat belt .Als osecure th e
child restrain tsystem wit hth eTop Tether
belt ,if available.
Always comply wit hth emanufacturer' sinstal -
lation and operating instruction sfor th echild
restrain tsystem used .
Befor eevery trip, mak esur ethat th eLATCH -
typ e(ISOFIX) child restrain tsystem is engage d
correctl yin bot hLATCH-type (ISOFIX) securin g
rings
LATCH-type (ISOFIX) securin grings 0044on th e
rear seat sare covered by foldin gupholstere d
lining 0087withVelcro fastening.
XFold upholstere dlining 0087upwards.
XTurn support 0043by 90°.
Upholstere dlining 0087remain sfolded
upwards.
XInstall th eLATCH-type (ISOFIX) child restrain t
system on bot hLATCH-type (ISOFIX) securin g
rings 0044.
Afte ryou hav eremove dth eLATCH-type (ISO-
FIX) child restrain tsystem, you mus ttur nsup-
por t0043 on upholstere dlining 0087by 90 °again .
The nfol dupholstery lining 0087down .
ISOFIX is astandardize dsecurin gsystem for
specially designed child restrain tsystems on
th erear seats. LATCH-type (ISOFIX) securin g
rings 0044for two LATCH-type (ISOFIX) child
restrain tsystems are installed on th elef tand
right rear seats.
Non-LATCH-typ e(ISOFIX) child seat smay also
be used and can be installed usin gth evehicle's
seat belt system. Install th echild seat according
to th emanufacturer' sinstructions.
Children in the vehicle59
Safety
Z

Top Tether
Introduction
Top Tether provides an additional connection
between the child restraint system secured with
a LATCH-type (ISOFIX) system and the vehicle.
This helps reduce the risk of injury even further.
If the child restraint system is equipped with a
Top Tether belt, this should always be used.
Top Tether anchorages
The Top Tether anchorage points are installed in
the rear compartment behind the head
restraints on the parcel shelf.
XMove head restraint 0043upwards
(Ypage 94).
XFold up cover 0044of Top Tether anchorage 0087.
XInstall the LATCH-type (ISOFIX) child restraint
system with Top Tether. Always comply with
the child restraint system manufacturer's
installation instructions when doing so.
XRoute Top Tether belt0083under head
restraint 0043between the two head restraint
bars.
XHook Top Tether hook 0085of Top Tether belt
0083 into Top Tether anchorage 0087.
Make sure that Top Tether belt 0083is not twis-
ted.
XTension Top Tether belt 0083. Always comply
with the child restraint system manufactur-
er's installation instructions when doing so.
XFold down cover 0044of Top Tether anchorage
0087.
XIf necessary, move head restraint 0043back
down again slightly (Ypage 94). Make sure
that you do not interfere with the correct rout-
ing of Top Tether belt 0083.
Child restraint system on the front-
passenger seat
General notes
Accident statistics show that children secured
in the rear seats are safer than children secured
in the front-passenger seat. For this reason,
Mercedes-Benz strongly advises that you install
the child restraint system on a rear seat.
If it is absolutely necessary to install a child
restraint system on the front-passenger seat,
always observe the instructions and safety
notes on the "Occupant Classification System
(OCS)" (
Ypage 49).
You can thus avoid the risks that could arise as a result of:
Ran incorrectly categorized person in the front-
passenger seat
Rthe unintentional deactivation of the front-
passenger front air bag
Rthe unsuitable positioning of the child
restraint system, e.g. too close to the dash-
board
Rearward-facing child restraint system
If it is absolutely necessary to install a rearward-
facing child restraint system on the front-
passenger seat, always make sure that the
front-passenger front air bag is deactivated.
Only if the PASSENGER AIR BAG OFF indicator
lamp is permanently lit (
Ypage 42 )is the front-
passenger front air bag deactivated.
Always observe the child restraint system man-
ufacturer's installation and operating instruc-
tions.
60Children in the vehicle
Safety

Correct driver's seat position
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
Observe the following when adjusting steering
wheel 0043, seat belt 0044and driver's seat 0087:
Ryou are as far away from the driver's air bag as
possible.
Ryou are sitting in a normal upright position.
Ryour thighs are slightly supported by the seat
cushion.
Ryour legs are not entirely stretched and you
can depress the pedals properly.
Rthe back of your head is supported at eye level
by the center of the head restraint.
Ryou can hold the steering wheel with your
arms slightly bent.
Ryou can move your legs freely.
Ryou can see all the displays in the instrument
cluster clearly.
Ryou should have a good overview of traffic
conditions.
Rthe seat belt is pulled snugly against the bodyand is routed across the center of your shoul-
der and across your hips in the pelvic area.
Further related subjects:
RAdjusting the seat electrically (Ypage 92).
RAdjusting the steering wheel electrically
(Ypage 98).
RFastening the seat belt correctly (Ypage 44).
RAdjusting the rear-view mirror and exterior
mirrors (Ypage 100).
RStoring the seat, steering wheel, exterior mir-
ror and head-up display settings with the
memory function (
Ypage 103).
Seats
Important safety notes
GWARNING
Children could become trapped if they adjust
the seats, particularly when unattended.
There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The seats can still be adjusted when there is no
SmartKey in the ignition lock.
GWARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
(
Ypage 46) and "Children in the Vehicle"
(Ypage 57).
GWARNING
If the head restraints are not installed or not
adjusted correctly, they cannot provide pro-
tection as intended. There is an increased risk
of injury in the head and neck area, e.g. in the event of an accident or when braking.
Seats91
Seats, steering wheel and mirrors
Z