2021 MERCEDES-BENZ S-CLASS SALOON LONG tow

&
W
WARNI NG
ARNI NGRisk of injury or dea thwhen
additional restraint systems are not used
fo r persons with a smaller stature
Pe rsons under 1.50 m tall cannot wearthe
seat belt cor rectly without a suitable addi-
tional restraint system. #
Always secure persons under 1.50 m tall
in a suitable restraint system. &
W
WARNING
ARNING Risk of injur y or death due to
bloc ked seat belt buckle or seat belt
anchorage
Objects next tothe front seat that block the
seat belt buckle or the moving seat belt
anchorage on the front seat impair the func-
tion of the seat belt tensioners. #
Before starting the journe y,make sure
th at there are no objects around the seat
belt buckle or between the front seat
and door. &
W
WARNING
ARNING Risk of injury or death due to
damaged or modi/ed seat belts
Seat belts cannot pr ovide pr otection in thefo l-
lowing situations:
R the seat belt is damaged, has been modi-
/ed, is extremely dirty, blea ched or dyed
R the seat belt buckle is damaged or
ex tremely dirty
R modi/cations ha vebeen made tothe seat
belt tensioner, seat belt anchorage or seat
belt retractor
Seat belts may sustain non-visible damage in
an accident, e.g. due toglass splinters.
Modi/ed or damaged seat belts could tear or
fa il in theev ent of an accident, forex ample.
Modi/ed seat belt tensioners could acciden-
ta lly trigger or failto function as intended. #
Never modify the seat belt system, for
ex ample the seat belt, seat belt buckle,
seat belt tensioner, seat belt anchorage
and seat belt retractor. #
Make sure that the seat belts are undam-
aged, not wornand clean. #
Always ha vethe seat belts checked
immediately aTer an accident at a quali-
/ed specialist workshop. Mercedes-Benz
recommends that you use seat
belts which ha vebeen appr ovedfo ryo ur vehicle
by Mercedes-Benz. &
W WARNI NG
ARNI NGRisk of injury or dea thfrom
deplo yedpy rotech nic seat belt tensioners
Pyro tech nic seat belt tensioners that ha ve
been deplo yed are no longer operational and
are unable toper form their intended pr otec-
tive function. #
Therefore, ha vedeplo yedpy rotech nic
seat belt tensioners immedia tely
re placed at a quali/ed specialist work-
shop. Mercedes-Benz
recommends that you ha vethe
ve hicle towe dto aqu ali/ed specialist workshop
aTer an accident. Occupant saf
ety
49
49

no
tes on rear wa rd-facing or forw ard-facing child
re straint systems on the front passenger seat
(/ page 82).
Inf
Inf or
ormation on aut
mation on aut omatic fr
omatic front passeng
ont passeng er airbag
er airbag
shut
shut o.
o.
The front passenger airbag can only be deplo yed
in an accident if thePA SSENGER AIR BAG OFF
indicator la mpis o.. If the front passenger seat is
occupied, make sure, bo thbefore and during the
journe y,that the status of the front passenger air-
bag is cor rect (/ page 58).
* NO
NOTE
TEDeployment of components of the
re straint system when the front passenger
seat is unoccupied In an accident,
the components of the
re straint system ma y deployunnecessarily on
th e front passenger side if:
R There are heavy objects on the front
passenger seat.
R The seat belt tongue is engaged in the seat
belt buckle of the front passenger seat and
th e front passenger seat is unoccupied. #
Stow objects in a suitable place. #
Only one person should use each seat
belt at any one time. Depending on
the de tected accident situation, the
wind owairbag on the front passenger side may
deplo y.The airbag is deplo yedre ga rdless of
whe ther the front passenger seat is occupied.
Inf Inf or
ormation on t
mation on t he centr
he centre airbag
e airbag
When triggered, the centre airbag deplo ys
between the front seats. Do not st owany objects
in the deployment area of the centre airbag.
Inf
Inf or
ormation on t
mation on t he r
he rear airbag
ear airbag
Alw ays obser vethe information on there ar air-
bag, especially in thefo llowing situations:
R A person is sitting on the outer rear seat.
R You install a child restraint system on the
outer rear seat.
R You st owobjects behind the front seats.
Before beginning the journe y,obser vethe infor-
mation on there ar airbag (/ page 61). Be
awa reofthe status of there specti verear airbag depending on
the situation bo thbefore and during
th e journey (/ page 62).
Inf
Inf or
ormation on t
mation on t he cushionbag in t
he cushionbag in t he r
he reclining
eclining
r
r ear seat
ear seat
The cushionbag o.ers additional occupant pr otec-
tion in theev ent of frontal impacts. When ena-
bled, the cushionbag deplo ysunder the seat cush-
ion. This helps pr event theve hicle occupant from
slipping o. the seat cushion.
If yo u install a child restraint system on there clin-
ing rear seat, alw ays obser vethe additional no tes
( / page 70). Pr
ot
Pr otection pro
ection pro vided b
vided by t
y the airbags
he airbags Depending on
the accident situation, an airbag
may supplement the pr otection o.ered bya cor-
re ctly fastened seat belt. &
W
WARNING
ARNING Risk of injur y or death due to
an inco rrect seat position
If yo u deviate from the cor rect seat position,
th e airbag cannot per form its intended pr otec-
tive function. 54
54
Occupant saf
ety

&
W
WARNI NG
ARNI NGRisk of injury due todeplo yed
airbag
A depl oyed airbag no longer o.ers any pr otec-
tion. #
Have theve hicle towe dto a quali/ed
specialist workshop in order tohave the
deplo yed airbag replaced. Ha
ve deplo yed airbags replaced immediatel y. S
S
t
tatus of t
atus of t he fr
he front passeng
ont passeng er fr
er front airbag
ont airbag F
F
unction of t
unction of t he aut
he automatic fr
omatic fr ont passeng
ont passeng er airbag
er airbag
shut
shut o.
o.
The automatic front passen ger airbag shuto. is
able todetect whe ther the front passenger seat is
occupied bya person or a child restraint system.
The front passenger airbag is enabled or disabled
acco rdingl y. &
W WARNI NG
ARNI NGRisk of injury or dea thdue 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 shuto. 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 /tting a
child restraint system tothe front
passenger seat, obser vetheve hicle-speci/c infor-
mation (/ page 83). Also, alw ays obser vethe
no tes on rear wa rd-facing or forw ard-facing child
re straint systems on the front passenger seat
(/ page 82).
A person on the front passenger seat must
obser vethefo llowing information:
R Fasten seat belts co rrectly (/ page 47).
R Sit in an almost upright seat position with their
back against the seat backrest. R
Sit with their feet resting on the 0oor, if possi-
ble.
The front passenger airbag may otherwise be dis-
abled bymistake, forex ample, in thefo llowing sit-
uations:
R The front passenger transfers their weight by
supporting themsel ves on a vehicle armrest.
R The front passen ger sits in such a wayth at
th eir weight is raised from the seat sur face. &
W
WARNING
ARNING Risk of injury or death due to a
disabled front passenger airbag
The front passenger airbag is disabled when
th ePA SSENGER AIR BAG OFF indicator lamp
is lit.
A person in the front passenger seat could
th en, forex ample, come into contact with the
ve hicle interior, especially if the person is sit-
ting too close tothe cockpit. Occupant saf
ety
57 57

ATer
the self-test, the status of there ar airbag for
th e leT and right rear seat is displ ayed via the
REAR SEAT AIR BAG indicator lamps:
R ON is lit:
ON is lit: there ar airbag may depl oyduring an
accident.
The indicator lamp goes out aTer appr ox-
imately 60 seconds.
R ON and OFF ar ON and OFF ar e
eo.:
o.: there ar airbag may
depl oyduring an accident.
R OFF is lit:
OFF is lit: there ar airbag is disabled. It will
th en not be deplo yed in theev ent of an acci-
dent.
If th e REAR SEAT AIR BAG ON indicator lamp is
o., only the REAR SEAT AIR BAG OFF indicator
lamp sho ws the status of there ar airbag. The
REAR SEAT AIR BAG OFF indicator lamp may be lit
continuously or be o.. Enabling/disabling t
Enabling/disabling t
he r
he rear airbag via t
ear airbag via t he multi-
he multi-
media syst
media syst em
em
Multimedia system:
4 © 5
Settings 5
Vehicle
5 Occupant protection #
Enable or disable the desired rear airbag
under Rear airbags . PRE-S
PRE-S
AFE
AFE®
®
syst
syst em
em F
F
unction of PRE-S
unction of PRE-S AFE
AFE®
®
(anticipat
(anticipat or
ory occupant
y occupant
pr ot
pr otection)
ection) PRE-SAFE
®
is able todetect cer tain critical driv-
ing situations and implement pre-em ptive meas-
ures toprotect theve hicle occupants.
PRE-SAFE ®
can implement thefo llowing meas-
ures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Closing the side windo ws.
R V
Vehicles wit
ehicles wit h sliding sunr
h sliding sunr oof:
oof:closing the slid-
ing sunroof. R
V
Vehicles wit
ehicles wit h memor
h memory function:
y function: movingthe
front passenger seat toa more favo urable seat
position.
R V
Vehicles wit
ehicles wit h memor
h memory function in t
y function in t he r
he rear
ear
com
com par
partment:
tment: moving the outer rear seats to
a more favo urable seat position.
R V
Vehicles wit
ehicles wit h multicont
h multicont our seat
our seat:
:increasing the
air pressure in the seat side bolsters of the
seat backrest.
R PRE-SAFE ®
Sound: pr ovided that the multime-
dia system is switched on, generating a brief
noise signal tostimula tethe innate pr otective
mechanism of a person's hearing.
* NO
NOTE
TEDamage caused byobjects in the
fo ot we ll or behind the seat The automatic adjustment of
the seat position
may result in damage tothe seat and/or the
object. #
Stow objects in a suitable place. Occupant saf
ety
63
63

R
R
e
ev
ver
er sing t
sing t he PRE-S
he PRE-S AFE
AFE®
®
syst
syst em measur
em measur es
es If an accident did not occur,
the pre-em ptive
measures that we re ta ken are reve rsed.
Yo u will need toper form certain settings yourself. #
Ifth e seat belt pre-tensioning is not reduced,
mo vethe seat backrest back slightl y.
The locking mechanism releases. F
F
unction of PRE-S
unction of PRE-S AFE
AFE®
®
PL
PL US (anticipat
US (anticipat or
ory occu-
y occu-
pant pr ot
pant pr otection plus)
ection plus) PRE-SAFE
®
PLUS can de tect cer tain impacts, par-
ticular lyan imminent rear impact, and take pre-
em ptive measures toprotect theve hicle occu-
pants. These measures cann otnecessarily pre-
ve nt an imminent impact.
PRE-SAFE ®
PLUS can implement thefo llowing
measures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Activating there ar hazard warning lights at a
higher 0ashing frequency. R
Increasing brake pressure when theve hicle is
stationar y.This brake application is cancelled
automatically when theve hicle pulls away.
If an accident did not occur, the pre-em ptive
measures that we re ta ken are reve rsed.
Syst
Syst em limits
em limits
The system 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 system will not initiate any braking application
in thefo llowing situations:
R whilst driving
or
R when entering or exiting a parking space while
using Active Parking Assist F F
unction of PRE-S
unction of PRE-S AFE
AFE®
®
Im
Im pulse Side
pulse Side If an imminent side impact is de
tected, PRE-
SA FE®
Impulse Side can pre-em ptively mo vethe
front seat vehicle occupant's upper body towa rds
th e centre of theve hicle. It does this by rapidly
in0ating 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 theve hicle occupant.
V
V ehicles wit
ehicles wit h E-A
h E-ACTIVE BOD
CTIVE BOD Y C
Y CONTR
ONTR OL:
OL:the body
can also be slightly raised.
If PRE-SAFE ®
Impulse Side has been deplo yed or
is faulty, thePRE-SAFE impulse side inoperative
See Owner's Manual (/page 496) display mes-
sage appears. A
A
ut
ut omatic measur
omatic measur es
esaTer
aTer an accident
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 implemented, for
ex ample:
R automatic braking (post-collision brake) 64
64
Occupant saf
ety

%
Ifth e door handle is not extended, touch sen-
sor sur face 2 tounloc k. #
T
To loc
o loc k t
k the v
he v ehicle:
ehicle: touch recessed sensor
sur face 3. #
Conv
Conv enience closing:
enience closing: touch recessed sensor
sur face 3 for an extended period.
% Further information on con venience closing
(/ page 107). Pr
Pr
oblems wit
oblems wit h KEYLESS-GO, tr
h KEYLESS-GO, tr oubleshoo
oubleshooting
ting Y
Y
ou can no long
ou can no long er loc
er lock or unloc
k or unloc k t
k the v
he v ehicle using
ehicle using
KEYLESS-GO
KEYLESS-GO
Po ssible causes:
R The function of theke y has been deactivated.
R The key battery is weak or dischar ged. #
Activate the function of theke y (/ page 90). #
Check the battery using the indicator lamp
(/ page 88). #
Replace theke y batter y,if necessary
(/ page 90). #
Use there placement key. #
Use the emer gency keyto lock or unlock
(/ page 96). #
Have theve hicle and keych ecked at a quali-
/ed specialist workshop.
Ther Ther e is int
e is int erf
erfer
erence fr
ence fr om a pow
om a pow er
erful r
ful r adio signal
adio signal
sour
sour ce
ce
Po ssible causes if the function of KEYLESS-GO is
impaired:
R high voltage po wer lines R
mobile phones
R electronic devices (no tebooks, tablets)
R shielding due tome tal objects or induction
loops for electrical gate systems or automatic
bar riers #
Make sure that there is su1cient distance
between theke y and the po tential sou rce of
inter fere nce. A
A
ctiv
ctiv ating or deactiv
ating or deactiv ating t
ating the aut
he automatic loc
omatic loc king
king
f
f eature
eature Multimedia system:
4 © 5
Settings 5
Vehicle
5 Locking function
% The vehicle is loc ked automatically when the
ve hicle is switched on and the wheels are
turning faster than walking pace. #
Activate or deactivate Automatic locking.
In thefo llowing situations, there is a danger of
being loc ked out when the function is activated:
R The vehicle is being towe d or pushed. Opening and closing
95
95

#
With th e boot lid comple tely open, press and
hold theH button on thekey. Thekey must
be in the vicinity of theve hicle.
V
V ehicles wit
ehicles wit h HANDS-FREE A
h HANDS-FREE A CCESS
CCESS #
With th e boot lid comple tely open, make a
kicking mo vement with your foot below the
bumper (/ page 101).
Boo
Boo t lid aut
t lid aut omaticrev
omatic rever
ersing function
sing function
The boot lid is equipped with automatic bloc kage
de tection with a reve rsing function. If an obstacle
obstructs the boot lid during the automatic clos-
ing 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. &
W WARNING
ARNING Risk of becoming trapped
despite reve rsing function
The reve rsing function will not react:
R tosoT, light and thin objects, e.g. /n gers
R towa rdsth e end of the closing procedure In
these situations in particular, there ve rsing
function cannot pr event someone being trap-
ped. #
Ensure that no body parts are in the
closing area. #
If someone is trapped, use one of thefo l-
lowing options:
R Press theH button on thekey.
R Press there mo teoperating switch on
th e driver's door.
R Press the closing or locking button
on the boot lid.
R Pull the boot lid handle. HANDS-FREE A
HANDS-FREE A
CCESS function
CCESS function Wi
th HANDS-FREE ACCESS you can open, close
or inter rupt boot lid mo vement byper form ing a
kicking mo vement under there ar bumper.
The kicking mo vement triggers the opening or
closing process alternatel y.
Obser vethe no tes when opening (/ page 98)
and closing (/ page 99)the boot lid. Opening and closing
101
101

%
Awa rning tone sounds while the boot lid is
opening or closing. &
W
WARNING
ARNING Risk of burns caused bya hot
ex haust system
The vehicle exhaust system can become very
hot. If you use HANDS-FREE ACCESS, you
could burn yourself bytouching theex haust
system. #
Always ensu rethat you only make a kic k-
ing mo vement within the de tection range
of the sensors. *
N
NOOTE
TE Damage totheve hicle caused by
unintentionally opening the boot lid or a
door R
when using an automatic car wash
R when using a high pressure cleaner #
Deactivate the function of theke y in
th ese situations.
or #
Make sure that theke y is at a minimum
dis tance of 3 m (high-p ressure cleaner) or 6 m (automatic car
wash) awa y from
th eve hicle. When making
the kicking mo vement, make sure
th at you are standing /rmly on thegr ound. Yo u
could otherwise lose your balance, e.g. on ice.
Obser vethefo llowing no tes:
R The key is behind theve hicle.
R Stand at least 30 cm away from theve hicle
while per form ing the kicking mo vement.
R Do not come into contact with the bumper
while making the kicking mo vement.
R Do not car ryout the kicking mo vement too
slo wly.
R The kicking mo vement must be towa rdsthe
ve hicle and back again. 1
Detection range of the sensors
If se veral consecutive kicking mo vements are not
successful, waitte n seconds.
Syst
Syst em limits
em limits
The system may be impai red or may not function
in thefo llowing cases:
R The sensors are dirty, e.g. due toroad salt or
sno w.
R The kicking mo vement is made using a pros-
th etic leg. 102
102
Opening and closing