2021 MERCEDES-BENZ S-CLASS SALOON LONG Owners Manual

Ke
ep children away. Obser
vethis Owner's Manual.
Obser vethefo llowing if you do not intend touse
th eve hicle over an extended period of time:
R Activate standby mode.
R Alternativel y:connect the battery toa battery
ch arge r appr ovedby Mercedes-Benz or con-
sult a quali/ed specialist workshop todiscon-
nect the batter y. N
N
o
ot
tes on st
es on st ar
arting assist
ting assist ance and c
ance and c har
harging t
ging t he 12
he 12
V batt
V batt ery
ery V
V
ehicles wit
ehicles wit h a lit
h a lithium-ion batt
hium-ion batt ery
ery
When charging the battery and during starting
assistance, alw ays use the jump-start connection
point in the engine compartment. *
N
NOOTE
TE Damage tothe battery from over-
vo ltage When
charging using a battery charge r without
a re striction of the maximum charging voltage,
th e battery or the on-board electronics can be
damaged. #
Only use battery charge rs with a maxi-
mum charging voltage of 14.8 V. All
ot
All other v
her v ehicles
ehicles
When charging the battery and during starting
assistance, alw ays use the jump-start connection
point in the engine compartment.
* NO
NOTE
TEDamage tothe battery from over-
vo ltage When
charging using a battery charge r without
a re striction of the maximum charging voltage,
th e battery or the on-board electronics can be
damaged. #
Only use battery charge rs with a maxi-
mum charging voltage of 14.8 V. &
W
WARNI NG
ARNI NGRisk of explosion due tohydro-
ge nga s igniting
If, when charging a batter y,there is a short
circuit or spar ksstart toform ,th ere is a dan-
ge r of hydrogen gas igniting. #
Take care that the positive clamp con-
nected toa battery does not come into
contact with vehicle parts. #
Never place me tal objects or tools on a
batter y. #
When connecting and disconnecting the
batter y,alw ays obser vethe sequence of
battery clamps described. #
Take care toonly connect battery term i-
nals of identical polarity when receiving
starting assistance. #
Obser vethe sequence described for
connecting and disconnecting the jump
leads when receiving starting assistance. #
Do not connect or disconnect the bat-
te ry term inals while the engine is run-
ning. 446
446
Breakdown assistance

&
W
WARNI NG
ARNI NGRisk of explosion due toexplo-
sive mixture of gases
An explosive mixture of gases can escape
from the battery during charging and starting
assis tance. #
Fire , naked 0ames, smoking and creating
spar ksmust be avoided. #
Make sure there is adequate ventilation. #
Do not stand overth e batter y. &
W
WARNI NG
ARNI NGRisk of explosion from a frozen
battery
A dischar ged battery may freeze at temp era-
tures slightly abo veor below freezing point.
During starting assistance or battery charging,
battery gas can be released. #
Always allow a battery tothaw before
ch arging it or per form ing starting assis-
ta nce. If
th e indicator/warning lamps in the inst rument
cluster do not light up at low temp eratures, it is
ve ry likely that the dischar ged battery has frozen. In
this case you may neither jump-start theve hi-
cle nor charge the batter y.
The service life of a bat tery that has been thawed
may be dramatically shor tened. The starting char-
acteristics may be impaired, especially at low
te mp eratures.
It is recommended that you ha veath awe d battery
ch ecked at a quali/ed specialist workshop.
Plug-in h Plug-in h ybr
ybrid
id
If yo ur vehicle has been star ted with starting
assistance, it may not be possible touse the elec-
tric drive for appr oximately 30 minutes.
St arting assis tance is not considered tobe a nor-
mal operating condition.
All v All v ehicles
ehicles
* NO
NOTE
TEDamage caused bynume rous or
ex tended attem ptsto start the engine Numerous or
extended attem ptsto start the
engine may damage the catalytic con verter
due tonon-combusted fuel. #
Avoid numerous and extended attem pts
to start the engine. Obser
vethefo llowing points during starting assis-
ta nce and when charging the batter y:
R Only use undamaged jump lead/charging
cables with a su1cient cross-section and
insulated term inal clamps.
R Non-insulated parts of thete rm inal clamps
must not come into contact with other me tal
parts while the jump lead/charging cable is
connected tothe battery/jump-start connec-
tion point.
R The jump lead/charging cable must not come
into contact with any parts which may mo ve
when the engine is running.
R Always make sure that nei ther you nor the bat-
te ry is electros tatically charge d.
R Keep awa y from /re and naked 0ames.
R Do not lean overth e batter y. Breakdow
n assistance
447 447

Obser
vethe additional following points when
ch arging the batter y:
R Only use battery charge rs tested and
appro vedfo r Mercedes-Benz.
R Read the battery charge r's operating inst ruc-
tions before charging the batter y.
Obser vethe additional following points during
starting assistance:
R Starting assis tance may only be pr ovided
using vehicles, batteries or other jump start
devices with a nominal voltage of 12 V.
R The vehicles must not touch.
R V
Vehicles wit
ehicles wit h a pe
h a petr
trol engine:
ol engine: jump-start the
ve hicle only when the engine and exhaust sys-
te m are cold. S
S
t
tar
ar ting assist
ting assist ance and c
ance and c har
harging t
ging t he 12 V batt
he 12 V batt ery
ery Pr
Pr
epar
epar ing f
ing for st
or st ar
arting assist
ting assist ance/t
ance/the c
he char
harging
ging
pr
pr ocess
ocess #
Secure theve hicle byapplying the electric
parking brake. #
ShiT the transmission toposition j. #
Switch o. theve hicle and all elect rical con-
sumers. #
Open the bonnet. #
Open co ver1. #
Slide pr otective co ver2 of POSITIVE contact
3 onthe jump-start connection point in the
direction of the ar row. S
S
t
tar
ar ting assist
ting assist ance
ance #
Connect the POSITIVE contacts of theve hi-
cles with the jump lead. Start with your own
ve hicle /rst. #
Start the engine of the donor vehicle and run
it at idling speed. #
Connect the negative term inal of the donor
battery toear thpoint of your vehicle 4using 448
448
Breakdown assis
tance

th
e jump lead. Start with the donor vehicle
/rst. #
Start the engine of your ow nve hicle. #
Let the engines runfo r se veral minutes. #
Before disconnecting the jump leads, switch
on an electrical consumer in your ow nve hicle,
e.g. there ar wind owheater or the lighting.
When starting assistance has /nished: #
Firs t, re mo vethe jump lead from the ear th
point of your ow nve hicle and the negative ter-
minal of the donor batter y,then remo vethe
jump lead from the POSITIVE contacts of bo th
ve hicles. Alw ays start with your ow nve hicle
/rst. #
Close pr otective co ver2 of POSITIVE con-
ta ct 3 and close co ver1.
Plug-in h
Plug-in h ybr
ybrid:
id:ifyo ur vehicle has been star ted
with starting assis tance, it may not be possible to
use the electric drive for appr oximately 30
minutes.
Fu rther information can be obtained at a quali/ed
specialist workshop. Char Char
ging t
ging t he 12 V batt
he 12 V batt ery
ery #
Connect the POSITIVE contacts of theve hicle
and thech arge r with thech arging cable. Start
with theve hicle /rst. #
Connect the NEG ATIVE contact of thech arger
and ear thpoint 4ontheve hicle with the
ch arging cable. Start with thech arge r /rst. #
Start thech arging process.
When thech arging process is comple te: #
Remo vethech arging cable from ear thpoint
4 ontheve hicle and the NEG ATIVE contact
of thech arge r /rst and then from the POSI-
TIVE contacts on theve hicle and charge r.
Alw ays start with theve hicle /r st. #
Close pr otective co ver2 of POSITIVE con-
ta ct 3 and close co ver1. R
R
eplacing t
eplacing t he 12 V batt
he 12 V batt ery
ery #
Obser vethe no tes on the 12 V battery
(/ page 444). Mercedes-Benz
recommends that you ha vethe
12 V battery replaced at a quali/ed specialist
wo rkshop, e.g. at a Mercedes-Benz Se rvice
Centre.
Obser vethefo llowing no tes if youwa nttoreplace
th e battery yourself:
R Alwaysre place a faulty battery with a battery
which meets the speci/c vehicle requ ire-
ments.
The vehicle is equipped with an AGMtech nol-
ogy bat tery (Absorbent Glass Mat) or a lith-
ium-ion batter y.Fu llve hicle functionality is
only guaranteed with an AGM bat tery or lith-
ium-ion batter y.Fo r saf etyre asons, Mercedes-
Benz recommends that you only use batteries
which ha vebeen tested and appro vedfo ryo ur
ve hicle byMercedes-Benz.
R Carryove r de tach able parts, such as vent
hoses, elbow /ttings or term inal co vers from
th e battery being replaced.
R Make sure that theve nt hose is alw ays con-
nected tothe original opening on the side of
th e batter y.
Fi t any existing or supplied cell caps. Breakdown assistance
449 449

Otherwise,
gases or battery acid could
escape.
R Make sure that de tach able parts are recon-
nected in the same way. T
T
o
o w
w -st
-st ar
arting or to
ting or towing away
wing away P
P
er
er mitt
mitt edto
ed towing met
wing met hods (non plug-in h
hods (non plug-in h ybr
ybrid)
id) *
N
NOOTE
TE Damage from automatic braking If one of
thefo llowing functions is switched
on, theve hicle brakes automatically in cer tain
situations:
R Active Brake Assist
R Active Distance Assist DISTRONIC
R HOLD function
R Active Parking Assist
To avoid damage totheve hicle, deactivate
th ese systems in thefo llowing or similar situa-
tions: #
during towing #
in a car wash Mercedes-Benz
recommends transporting your
ve hicle in the case of a breakdown, rather than
to wing it away.
Fo rto wing, use a tow rope or tow bar with bo th
axles on thegr ound. Do not use tow bar systems
(/ page 344).
* N
NOOTE
TE Damage totheve hicle due to tow-
ing awa y incor rectly #
Obser vethe inst ructions and no tes on
to wing away. T
T
o
o wing wit
wing wit h a r
h a raised axle:
aised axle: towing should be per-
fo rm ed byato wing compan y. V
V
ehicles wit
ehicles wit h r
h rear wheel dr
ear wheel dr ive
ive P
P
er
er mitt
mitt edto
ed towing met
wing met hods
hods
Bo th axles on
th egr ound Ye
s, maximum 50 km at
50 km/h
Fr ont axle
ra ised No
Re ar axle
ra ised Ye
s, if the steering wheel is
/xed in the centre position
with a steering wheel lock 4MA
4MA
TIC v
TIC v ehicles
ehicles P
P
er
er mitt
mitt edto
ed towing met
wing met hods
hods
Bo th axles on
th egr ound Ye
s, maximum 50 km at
50 km/h
Fr ont axle
ra ised No
Re ar axle
ra ised No450
450
Breakdown assistance

P
P
er
er mitt
mitt edto
ed towing met
wing met hods (plug-in h
hods (plug-in h ybr
ybrid)
id) Mercedes-Benz
recommends transporting your
ve hicle in the case of a breakdown, rather than
to wing it away.
Fo rto wing, use a tow rope or tow bar with bo th
axles on thegr ound. Do not use tow bar systems.
* N
NOOTE
TE Damage totheve hicle due to tow-
ing awa y incor rectly #
Obser vethe inst ructions and no tes on
to wing away. Obser
vethe information on towing and transport-
ing theve hicle in theve hicle Owner's Manual.
In thefo llowing situations, only transporting the
ve hicle is permitted:
R the driver's display is not working
R theá Towing not permitted See Owner's
Manual display message appears in the driv-
er's display
Ex
Ex cep
cep tion:
tion: ifth eve hicle is located in a danger
zone, it can be reco vered from the danger zone
despite theá Towing not permitted See Owner's Manual
display message or the display
not working. It must not be towe d fur ther than
50 m with bo thaxles on thegr ound. A towing
speed of 10 km/h must not be exceeded. Be yond
th ese limits, only transporting is permitted.
V
V ehicles wit
ehicles wit h r
h rear wheel dr
ear wheel dr ive
ive P
P
er
er mitt
mitt edto
ed towing met
wing met hods
hods
Bo th axles on
th egr ound Ye
s, maximum 50 km at
50 km/h, only forw ards with
th e driver in theve hicle
Fr ont axle
ra ised No
Re ar axle
ra ised Ye
s, if the steering wheel is
/xed in the centre position
with a steering wheel lock 4MA
4MA
TIC v
TIC v ehicles
ehicles P
P
er
er mitt
mitt edto
ed towing met
wing met hods
hods
Bo th axles on
th egr ound Ye
s, maximum 50 km at
50 km/h, only forw ards with
th e driver in theve hicle
Fr ont axle
ra ised No
Re ar axle
ra ised No T
T
o
o wing t
wing t he v
he vehicle wit
ehicle wit h bot
h both axles on t
h axles on t hegr
he ground
ound #
Obser vethe no tes on the permitted towing
me thods (/ page 450). #
Plug-in hybrid: obser vethe no tes on the per-
mitted towing me thods (/ page 451). #
Make sure that the battery is connected and
ch arge d.
When the battery is dischar ged, thefo llowing
actions cannot be per form ed:
R theve hicle cann otbe star ted Breakdow
n assistance
451
451

R
the electric parking brake cannot be released
or applied
R the transmission cannot be shiTed toposition
i orj
% Ifth e transmission cannot be shiTed toposi-
tion iorthe driver's display in the inst ru-
ment clus ter does not show anything, ha ve
th eve hicle transpor ted (/ page 453). A tow-
ing vehicle with liTing equipment is requ ired
fo rve hicle transpor tation.
* N
NOOTE
TE Damage due to towing away at
ex cessively high speeds or over long dis-
ta nces The driv
etra in could be damaged when towing
at excessively high speeds or over long distan-
ces. #
Atowing speed of 50 km/h must not be
ex ceeded. #
Atowing dis tance of 50 km must not be
ex ceeded. &
W
WARNING
ARNING Risk of accident when towing a
ve hicle which is too heavy
If th eve hicle tobe tow- star ted or towe daway
is heavier than the permissible gross mass of
yo ur vehicle, thefo llowing situations can
occur:
R theto wing eye may become de tach ed.
R theve hicle/trailer combination may
swer veorove rturn. #
Before tow- starting or towing away,
ch eck if theve hicle tobe tow- star ted or
to we dawa yex ceeds the permissible
gr oss mass. If a
vehicle must be tow- star ted or towe dawa y,its
we ight must not exceed the permissible gross
mass of theto wing vehicle. #
Information on the permissible gross mass of
th eve hicle can be found on theve hicle identi-
/cation plate (/ page 480). #
Do not open the driver's door or front
passenger door; the transmission will other-
wise automatically shiT toj . #
Fitth eto wing eye (/ page 456). #
Fasten theto wing device.
* N
NOOTE
TE Damage due toincor rect connec-
tion of theto w bar #
Only connect theto w rope or tow bar to
th eto wing eyes. %
V
Vehicles wit
ehicles wit hto
h to w bar:
w bar: you can also attach the
to w bar tothe trailer hitch. #
Deactivate the automatic locking mechanism . #
Do not activate the HOLD function. #
Deactivate tow- awa y protection
(/ page 116). #
Deactivate Active Brake Assist (/ page 294). #
ShiT the transmission toposition i. #
Release the electric parking brake. 452
452
Breakdown assistance

&
W
WARNI NG
ARNI NGRisk of accident due tolimited
saf ety-re lated functions during theto wing
process
Saf ety-re lated functions are limited or no lon-
ge rav ailable in thefo llowing situations:
R theve hicle is switched o..
R the brake system or po wer steering system
is malfunctioning.
R the energy supply or the on-board electri-
cal system is malfunctioning.
When your vehicle is towe daw ay, signi/cantly
more e.ort may be requ ired tosteer and
brake than is normally requ ired. #
Use a tow bar. #
Make sure that the steering wheel can
mo vefreely be fore towing theve hicle
awa y. *
N
NO
OTE
TE Damage due toexcessive tractive
po wer If
yo u pull away sharpl y,the tractive po wer
may be too high and theve hicles could be
damaged. #
Pull away slo wlyand smoo thly. Loading t
Loading t
he v
he vehicle f
ehicle f or tr
or transport
anspo rt Re
quirements:
R The vehicle is stationar y.
R The vehicle is switched o..
R The driver's displ ayis in the initial state with
no menus open (/ page 345).Transpo rtis
also possible with a warning message visible.
R The 12 V bat tery isch arge d.
Plug-in h
Plug-in h ybr
ybrid:
id:transpor tation of vehicles should
only be car ried out byprofessional reco very com-
panies. #
If necessar y,set the system language
(/ page 386). #
Obser vethe no tes on towing away
( / page 451). #
Connect theto wing device totheto wing eye
in order toload theve hicle.
% V
Vehicles wit
ehicles wit h tr
h trailer hitc
ailer hitc h:
h:you can also attach
th eto w bar tothe trailer hitch. #
Switch on the po wer supply (/ page 210). #
ShiT the transmission toposition i.
% The transmission may be loc ked in position
j intheev ent of damage tothe electrics. To
shiT toi , pr ovide the on-board electrical
system with po wer (/ page 448).
* N
NOOTE
TE Possible damage totheve hicle
when loading or unloading When loading or unloading,
theve hicle must
be raised totransport le vel.
If th e transport settings are not shown or the
Vehicle not ready for loading messageis dis-
pla yed, theve hicle may not be loaded or
unloaded. Breakdown assis
tance
453
453