2020 MERCEDES-BENZ S-CLASS SALOON LONG warning light

Sy
stem limits
The sy stem will not initiate any action in thefo l‐
lowing situations:
R when reve rsing
or
R when theve hicle is towing a trailer and there
is a risk of a rear impact
The sy stem will not initiate any braking applica‐
tion in thefo llowing situations:
R whilst driving
or
R when entering or exiting a parking space
while using Active Parking Assist Fu
nction of PRE-SAFE ®
Impulse Side If an imminent side impact is de
tected, PRE-
SA FE®
Impulse Side can pre-emptively mo vethe
front seat vehicle occupant's upper body
to wa rdsth e cent reoftheve hicle. It does this by
ra pidly inflating an air cushion in the outer seat
side bols ter of the seat backrest on the side on
which the impact is anticipated. This increases th
e dis tance between the door and theve hicle
occupant.
If PRE-SAFE ®
Impulse Side has been deplo yed or
is faulty, thePRE-SAFE impulse side inoperative
See Owner's Manual( /page 493) display mes‐
sage appears. Au
tomatic measures af ter an accident
Depending on the type and se verity of the acci‐
dent, and depending on theve hicle's equipment,
th efo llowing measures can be implemen ted, for
ex ample:
R automatic braking (post-collision brake)
R activating the hazard warning lights
R triggering an automatic emer gency call
(/ page 334)
R switching off the engine
To restart theve hicle, switch the ignition off
and switch it back on (/ page189).
Depending on the type and se verity of the
accident, it is possible that theve hicle can
no longer be star ted. R
switching off the fuel supply
R unlocking theve hicle doors
R lowe ring the side windo ws
R displaying the emer gency guide in the cent ral
display
R switching on the interior lighting
Fu nction of the post-collision brake
Depending on the accident situation, the post-
collision brake can minimise the se verity of a fur‐
th er collision or evenavo id it.
If an accident is de tected, the post-collision
brake can implement automatic braking. When
th eve hicle has come toast andstill, the electric
parking brake is automatically applied.
The driver can cancel automatic braking bytak‐
ing thefo llowing actions:
R braking more stronglythan automatic brak‐
ing
R fully depressing the accelerator pedal with
fo rce 56
Occupant saf ety

Av
oid direct sunlight &
WARNING Risk of bu rns when thech ild
seat is exposed todirect sunlight
If th ech ild restra int sy stem is exposed to
direct sunlight or heat, parts could heat up.
Children could suf fer burns from these parts,
particularly on the me tallic parts of thech ild
re stra int sy stem. #
Alw ays make sure that thech ild
re stra int sy stem is not exposed to
direct sunlight. #
Protect thech ild restra int sy stem, e.g.
with a blank et. #
Ifth ech ild restra int sy stem has been
ex posed todirect sunlight, allow it to
cool before secu ring a child in it. #
Never lea vechildren unat tended in the
ve hicle. Obser
vewhen stopping or parking &
WARNING Risk of accident and inju ry
due toleaving children unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey 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 by,fo rex ample:
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 there ach 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. Overview of
recommended child restra int
sy stems %
Further information on the cor rect child
re stra int sy stem can be obtained at a quali‐
fi ed specialist workshop. Mercedes-Benz
re commends that you use a Mercedes-Benz
Service Centre forth is purpose. 60
Occupant saf ety

Fi
tting an ISOFIX or i‑Size child restra int sys‐
te m on the rear seat &
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 64)
or
i‑Size child seat securing sy stem
(/ page 65)
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 1 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 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
maximum size setting forch ild restra int sys‐
te ms in weight group 2 or 3. 66
Occupant sa fety

Key
Overview of
key functions &
WARNING Risk of accident and inju ry
due toleaving children unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey 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 by,fo rex ample:
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 there ach of
ch ildren. *
NO
TEDama getotheke y caused by
magnetic fields #
Keep theke yaw ay from strong mag‐
netic fields. Ve
hicle key
1 Indicator lamp
2 Locks 3
Unloc ks(with embossed sur face)
4 Opens/closes the boot lid
% If indicator lamp 1does not light up af ter
pressing theÜ ors 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 79).
The key loc ksand unlo cksth efo llowing compo‐
nents:
R doors
R fuel filler flap
R boot lid
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 get her with electronic
devices or me tal objects. This can af fect the
ke y's functionalit y. Opening and closing
77

If an obs
tacle obstructs the boot lid during the
automatic opening process, bloc kage detection
will stop the boot lid. The automatic bloc kage
de tection function is only an aid and is not a
substitu teforyo ur attentiveness. Closing
the boot lid &
WARNING Risk of inju ryfrom unsecu red
items in theve hicle
If objects, luggage or loads are not secured
or not secured suf ficientl y,they could slip,
tip ove r or be throw n around and thereby hit
ve hicle occupants.
There is a risk of injur y,particularly in the
ev ent of sudden braking or a sudden change
in direction. #
Alw aysstow objects in such a wayth at
th ey cannot be thro wn around. #
Before the journe y,secure objects, lug‐
ga ge or loads against slipping or tipping
ove r. Obser
vethe no tes on loading theve hicle. Note
on closing the boot lid: your vehicle is
equipped with automatic keyre cognition. If a key
belonging totheve hicle is de tected in theve hi‐
cle, the boot lid will not be loc ked.
This depends on thefo llowing conditions:
R You ha veclosed the boot lid and theve hicle
wa s loc ked beforehand.
R A second key belonging totheve hicle is not
de tected outside theve hicle.
The boot lid will then not be loc ked and will pop
open again.
Au tomatic keyre cognition is only an aid and is
not a substitu teforyo ur attentiveness. #
Before locking, ensure that at least one key
belonging totheve hicle is outside theve hi‐
cle. #
Pull the boot lid down wards using the handle
re cess and push it closed.
% Ifyo u light lypush the boot lid closed, the
po we r closing function will auto maticallypull
th e boot lid into the loc k. Ve
hicles with boot lid conve nience closing &
WARNING Risk of becoming trapped
du ring au tomatic closing of the boot lid
Pa rts of the body could become trapped.
There may be people in the closing area. #
Make sure that nobody is in the vicinity
of the closing area. #
Use one of thefo llowing options tostop
th e closing process:
R Press theH button on thekey.
R Press or pull there mo teoperating
switch on the driver's door.
R Press the closing or locking button
on the boot lid.
R Pull the boot lid handle. #
Vehicles with HANDS-FREE ACCESS: it is
also possible tostop the closing process by
making a kicking mo vement below there ar
bumper. #
Pull the boot lid handle. Release it as soon as
it begins toclose. 88
Opening and closing

#
Ifth e boot lid is stopped in an intermediate
position, push it down wards.
The boot lid will continue toclose. #
Press boot lid remo teoperating switch 1. #
Press closing button 1onthe boot lid.
Ve hicles with KEYLESS-GO #
Press locking button 2onthe boot lid.
If a key is de tected outside theve hicle, the
boot lid will close and theve hicle will be
loc ked. #
With th e boot lid comple tely open, press and
hold theH button on thekey. Thekey
must be in the vicinity of theve hicle.
Ve hicles with HANDS-FREE ACCESS #
With th e boot lid comple tely open, make a
kicking mo vement with your foot below the
bumper (/ page 90).
Boot lid automatic reve rsing function
The boot lid is fitted wi thautomatic bloc kage
de tection wi thare ve rsing function. If an obs ta‐
cle obstructs the boot lid during the automatic
closing process, it will automatically open again.
The automatic reve rsing function is only an aid
and is not a substitute foryo ur attentiveness. #
During the closing process, make sure that
no body parts are in the closing area. &
WARNING Risk of becoming trapped
despi tereve rsing function
The reve rsing function will not react:
R tosoft, light and thin objects, e.g. fingers
R towa rdsth e end of the closing procedure Opening and closing
89

1
Closing
2 Opening
The but tons on the driver's door take prece‐
dence. #
Tostart automatic operation: pressthe
W button be yond the point of resis tance
or pull and release it. #
Tointer rupt automatic operation: press or
pull theW button again.
When theve hicle is switched off, you can con‐
tinue tooperate the side windo ws.
This function is available for around four minutes
or until a front door is opened.
% Ve
hicles with electric roller sunblinds on
re ar doors on the left and right: the but‐
to ns forth ere ar side wind owsalso open and
close thero ller sunblinds (/ page102).
Au tomatic reve rsing function of the side win‐
do ws
If an obs tacle impedes a side window du ring the
closing process, the side window will open again
automaticall y.The automatic reve rsing function
is only an aid and is not a substitute foryo ur
attentiveness. #
During the closing process, make sure that
no body parts are in the closing area. &
WARNING Risk of becoming trapped
despi tethere being reve rsing pr otection
on the side window
The reve rsing function does not react:
R tosoft, light and thin objects, e.g. fingers.
R during resetting.
The reve rsing function cannot pr event some‐
one from becoming trapped in these situa‐
tions. #
During the closing process, make sure
th at no body parts are in the closing
area. #
If someone becomes trapped, press the
W button toopen the side window
again. Au
tomatic function of the side windo ws In
thefo llowing cases, the side windo wswill be
closed automatically when theve hicle is
switched off:
R if it starts torain 94
Opening and closing

Ra
in is de tected byara in sensor on the
windscreen.
R inextreme temp eratures
R afte r a cer tain time (depending on the on-
board electrical sy stem voltage)
R ifth ere is a malfunction in the po wer supply
The side windo wswill be closed as far as the
ve ntilation position.
Ve hicles with a panorama sliding sunroof:
th e side windo wswill be closed comple tely ifthe
sliding sunroof is open.
If th e side windo wsare obstructed during auto‐
matic closing, the side window concerned will
open again slightl y.The automatic function for
th e sliding sunroof and the side windo wswill
th en be deactivated. Con
venience opening (ventilating theve hicle
before starting a journey) &
WARNING Risk of entrapment when
opening a side window
When opening a side windo w,parts of the
body could be dr awn in or become trapped
between the side window and window frame. #
When opening, make sure that nobody
is touching the side windo w. #
Release the button immediately if
somebody becomes trapped. #
Press and hold theÜ button on thekey.
The following functions are per form ed:
R The vehicle is unloc ked.
R The side windo wsare opened.
R The pano ramic sliding roof is opened.
R The seat ventilation of the driver's seat is
switched on. %
Ifth ero ller sunblinds of the panoramic slid‐
ing sunroof are closed, thero ller sunblinds
are opened firs t.
% Ifth ero ller sunblinds of there ar doors are
closed, thero ller sunblinds are opened firs t. #
Tointer rupt convenience opening: release
th eÜ button. #
Tocontinue con venience opening: press
and hold theÜ button again. Con
venience closing (closing theve hicle
from outside) &
WARNING Risk of entrapment due tonot
paying attention du ring con venience
closing
When the con venience closing feature is
operating, parts of the body could become
trapped in the closing area of the side win‐
dow and the sliding sunroof. #
When the con venience closing feature
is operating, monitor the entire closing Opening and closing
95