MERCEDES-BENZ S-CLASS SALOON LONG 2022 Owners Manual

Characteristics when the accelerator pedal is
r
eleased during the journey:
= The electric motor will be operated as an alter-
nator when in overrun mode and during brak-
ing.
= The high-voltage battery is charging.
Notes on electric mode: = Vehicles with hybrid systems generate signiN-
cantly less noise when stationary and when
being driven than vehicles with combustion
engines.
= When you are driving in electric mode, the
vehicle may not be heard by other road users
due to the signiNcantly reduced noise gener-
ated.
It is for this reason that the vehicle is equip-
ped with a sound generator, which serves as
an acoustic vehicle alert system (AVAS).
= If not all the vehicle conditions for electric
mode are met, the combustion engine will be
switched on.
% Vehicles with diesel particulate Nlt
ers during
the regeneration of the diesel particulate Nl-ter, t
he drive programmes are not available or
are restricted and the charge level of the high-
voltage battery may change.
Notes on the acoustic vehicle alert system:
= The sound g

enerator generates speed-depend-
ent vehicle noise emissions when the vehicle
is driving forwards or reversing at a speed of
up to around 30 km/h.
= This helps other road users, particularly
pedestrians and cyclists, to hear your vehicle
better.
= When you drive at speeds above 20 km/h the
acoustic vehicle alert system will gradually
switch oM.
= The sound generator will be oM when the vehi-
cle is stationary. Manual disconnection of the high-voltage on-
boar
d electrical system &
DANGER Risk of deat
h and Nre due to
modiNed and/or damaged components of
the high-voltage on-board electrical sys-
tem
The vehicle's high-voltage on-board electrical
sy
stem is under high voltage. If you modify
component parts in the vehicle's high-voltage
on-board electrical system or touch damaged
component parts, you may be electrocuted. In
addition, modiNed and/or damaged compo-
nents may cause a Nre.
In the event of an accident or impact to the
vehicle underbody, components of the high-
voltage electrical system may be damaged
although the damage is not visible. 
Never make any modiNcations t
o the
high-voltage on-board electrical system. 
Do not switch on or use the vehicle if its
high-v
oltage on-board electrical system
components have been modiNed or dam-
aged. 208
Driving and parking


Never touch damaged components of
t
he high-voltage on-board electrical sys-
tem. 
Aser an accident, do no
t touch any com-
ponents of the high-voltage on-board
electrical system. 
Aser an accident, ha
ve the vehicle trans-
ported away. 
Have the components of the high-voltage
on-boar
d electrical system checked at a
qualiNed specialist workshop and
replaced if necessary. Requirements:
Onl

y disconnect the high-voltage on-board electri-
cal system manually in the following situations:
= The 6 restraint system warning lamp lights
up in the driver's display, e.g. aser an acci-
dent.
= The vehicle is badly damaged, e.g. aser an
accident, and the restraint system compo-
nents have not been triggered. Operating the high-voltage disconnect device

Switch oM t
he vehicle. 
Shis t
he transmission to position j. 
Apply the electric parking brake. 
Secure the vehicle against rolling away. 
Open the bonnet. 
Press release tab 1 in t
he direction of the
arrow and pull it out. 
Pull high-voltage disconnect device 2 in t
he
direction of the arrow until it engages.
The high-voltage on-board electrical system is
switched oM.
All work on the hybrid drive system (including
aser disconnecting t

he high-voltage on-board
electrical system manually) may only be carried
out in a qualiNed specialist workshop. Switching on the power supply or the vehicle
&
WARNING Risk of accident and injur
y due
to leaving children unattended in the vehi-
cle
If children are les unatt
ended in the vehicle,
they could, in particular:
= open doors, thereby endangering other
persons or road users.
= get out and be struck by oncoming traPc. Driving and parking
209

=
oper ate vehicle equipment and become
trapped, for example.
In addition, the children could also set the
vehicle in motion by, for example: = releasing the parking brake.
= changing the transmission position.
= starting the vehicle. 
Never leave children unattended in the
v
ehicle. 
When leaving the vehicle, always take the
k
ey with you and lock the vehicle. 
Keep the vehicle key out of the reach of
c
hildren. Requirements:
= t

he key is in the vehicle and is recognised.
= the brake pedal is not depressed. 
To switch on the power supply: pr ess button
1 once.
You can, for example, switch on the wind-
screen wiper.
The power supply is switched oM ag
ain if the fol-
lowing conditions are met:
= you open the driver's door.
= you press button 1 twice more. 
To switch on the vehicle: pr
ess button 1
twice.
Indicator and warning lamps light up on the
driver's display.
The vehicle is switched oM ag
ain if one of the fol-
lowing conditions is met:
= you do not start the vehicle within 15 minutes
and the transmission is in position j or the
electric parking brake is applied.
= you press button 1 once. Starting the vehicle
Starting the vehicle with the start/stop button
&
DANGER Risk of f
atal injuries due to
exhaust gases
Combustion engines emit poisonous exhaust
g
ases such as carbon monoxide. Breathing in
these exhaust gases is hazardous to health
and results in poisoning. 
Never leave the engine and, if present,
t

he stationary heater, running in an 210
Driving and parking

enclosed space without
suPcient v enti-
lation. &
WARNING Risk of Nr
e due to Oammable
material in the engine compartment or the
exhaust system
Flammable materials may ignite. 
Therefore, check regularly that there are
no Oammable mat

erials in the engine
compartment or on the exhaust system. Requirements:
= The k

ey is in the vehicle and is recognised. 
Shis t
he transmission to position j or i.
Depress the brake pedal and press button 1
once. 
If the vehicle does not start: switch oM non-
essential consumer
s and press button 1
once. 
If the vehicle still does not start and the Place
the key in the marked space See Owner's
Manual displa

y message appears on the driv-
er's display: start the vehicle with the key in the marked space (emergency operation
mode)

( page 211).
% You can switch oM t
he vehicle while driving. To
do this, press button 1 for about three sec-
onds or press button 1 three times within
three seconds. Be sure to observe the safety
notes concerning this under "Driving tips"
(  page 214).
Observe any information regarding display mes-
sag
es that may be displayed on the driver's dis-
play.
Starting the vehicle with the key in the marked
space (emergency operation mode)
If the vehicle does not start and the Place the
key in the marked space See Owner's Manual
display message appears on the driver's display,
you can start the vehicle in emergency operation
mode. 
Make sure that the cup holder 2 is em
pty. 
Remove key 1 fr
om the key ring. 
Place key 1 in cup holder 2.
The v
ehicle will start aser a short time.
When you remove key 1 from cup holder 2,
the vehicle can be driven. For further vehicle
starts, however, key 1 must be located in
cup holder 2 during the entire journey. 
Have key 1 c
hecked at a qualiNed specialist
workshop.
If the vehicle does not start: 
Leave key 1 in cup holder 2. Driving and parking
211


Depress the brake pedal and start the vehicle
using t he start/stop button.
% You can switch on the power supply or the
v

ehicle with the start/stop button.
Observe any information regarding display mes-
sag
es that may be displayed on the driver's dis-
play. Starting the vehicle via Remote Online Services
Cooling or heating the vehicle interior before
s

tarting the journey
Ensure the following before starting the engine:
= The legal stipulations in the area where your
vehicle is parked allow engine starting via
smartphone.
= It is safe to start and run the engine where
your vehicle is parked.
= The fuel tank is suPciently full.
= The starter battery is suPciently charged. Charging the starter battery before starting the
jour
ney
You can receive a message on your smartphone
when the state of charge of the starter battery is
low. You can then start the vehicle with the smart-
phone to charge the battery. The vehicle is auto-
matically switched oM aser ten minutes.
Ensure the following before starting the engine:
= The legal stipulations in the area where your
vehicle is parked allow engine starting via
smartphone.
= It is safe to start and run the engine where
your vehicle is parked.
= The fuel tank is suPciently full.
Starting the vehicle (Remote Online) &
WARNING Risk of cr
ushing or entrapment
due to unintentional starting of the engine
Limbs could be crushed or trapped if the
engine is s
tarted unintentionally during service
or maintenance work. 
Always secure the engine against unin-
t

entional starting before carrying out
maintenance or repair work. Requirements:
= P

ark position j is selected.
= The anti-thes alarm system is not activated.
= The hazard warning light system is switched
oM.
= The bonnet is closed.
= The doors are closed and locked.
= The windows and sliding sunroof are closed. 
Start the vehicle using the smartphone.
Aser e

very engine start, the engine runs for
ten minutes.
You can carry out a maximum of two consecutive
s
tarting attempts. You must start the engine with
the key before trying to start the vehicle again
with the smartphone.
You can switch oM the vehicle at any time as fol-
lows:
= Via the Smartphone App 212
Driving and parking

=
By pr essing the

If ESP
n
is deactiv ated, there is a risk of skid-
ding and accident! 
Make sure that no persons or obstacles
ar
e in the close vicinity of your vehicle. Requirements:
= t

he vehicle is run in ( page 213).
= the vehicle and tyres are in good condition.
= you are on a high-grip roadway.
= the engine and transmission are at normal
operating temperature.
* NOTE Incr
eased wear due to optimised
acceleration When pulling away with optimised accelera-
tion, all com

ponents of the drivetrain are sub-
jected to a very high load.
This can lead to increased component wear. 
Do not always pull away with optimised
acceler

ation. 
Engage the h dr
ive position ( page 231). 
Move the steering wheel to the straight-ahead
position. 
Select the sportiest available drive program
B or C(  pag

e 226). 
Deactivating ESP n
( pag
e 268). 
Depress and hold the brake pedal Nr
mly with
your les foot. 
With your right foot, fully depress the acceler-
at

or pedal. 
Aser no mor
e than Nve seconds, take your les
foot quickly oM the brake, but keep the accel-
erator pedal depressed.
The vehicle will pull away at maximum acceler-
ation. 
Switch on ESP n
once t
he acceleration proce-
dure is complete.
Ending optimised acceleration 
Remove your foot from the accelerator pedal. 
Reactivate ESP n
.
% Aser y
ou pull away with optimised accelera-
tion, components of the drivetrain can
become very hot, which means that optimised acceleration values may be reached again
onl
y aser a few minutes. Notes on driving
&
WARNING Risk of accident due t
o objects
in the driver's footwell
Objects in the driver's footwell may impede
pedal tr
avel or block a depressed pedal.
This jeopardises the operating and road safety
of the vehicle. 
Stow all objects in the vehicle securely
so t
hat they cannot get into the driver's
footwell. 
Always Nt t
he Ooor mats securely and as
prescribed in order to ensure that there
is always suPcient room for the pedals. 
Do not use loose Ooor mats and do no
t
place Ooor mats on top of one another. 214
Driving and parking

&
WARNING Risk of accident due t o incor-
rect footwear
Incorrect footwear includes, for example: = shoes wit

h platform soles
= shoes with high heels
= slippers
There is a risk of an accident. 
Always wear suitable footwear so that
y

ou can operate the pedals safely. &
WARNING Risk of accident if t
he vehicle is
switched oM while driving
If you switch oM t
he vehicle while driving,
safety functions are restricted or no longer
available.
This may aMect the power steering system and
the brake force boosting, for example.
You will need to use considerably more force
to steer and brake, for example. 
Do not switch oM t
he vehicle while driv-
ing. &
DANGER Risk of f
atal injuries due to
exhaust gases
Combustion engines emit poisonous exhaust
g
ases such as carbon monoxide. Breathing in
these exhaust gases is hazardous to health
and results in poisoning. 
Never leave the engine and, if present,
t

he stationary heater, running in an
enclosed space without suPcient venti-
lation. &
WARNING Risk of skidding and of an acci-
dent due t
o shising down on slippery road
surfaces
If you shis do
wn on slippery road surfaces to
increase the engine braking eMect, the drive
wheels may lose traction. 
Do not shis do
wn on slippery road surfa-
ces to increase the engine braking
eMect. &
DANGER Risk of f
atal injury due to poison-
ous exhaust gases
If the tailpipe is blocked or suPcient v
entila-
tion is not possible, poisonous exhaust gases
such as carbon monoxide may enter the vehi-
cle. This is the case, for example, if the vehicle
gets stuck in the snow. 
Keep the tailpipe and the area around
t

he vehicle free from snow when the
engine or the stationary heater is run-
ning. 
Open a window on the side of the vehicle
f

acing away from the wind to ensure an
adequate supply of fresh air. &
WARNING Risk of accident due t
o the
brake system overheating
If you leave your foot on the brake pedal when
dr
iving, the brake system may overheat.
This increases the braking distance and the
brake system can even fail. 
Never use the brake pedal as a footrest. Driving and parking
215


Do not depress the brake pedal and the
acceler ator pedal at the same time while
driving. *
NOTE Engine damag
e due to excessively
high engine speeds The engine will be damaged if you drive with
t

he engine in the overrevving range. 
Do not drive with the engine in the over-
r
evving range. *
NOTE Causing w
ear to the brake linings by
permanently depressing the brake pedal 
Do not permanently depress the brake
pedal while dr

iving. 
To use braking eMect of t
he engine, shis
to a lower gear in good time. *
NOTE Damag
e to the drivetrain and
engine when pulling away 
Do not warm up the engine while the
v

ehicle is stationary. Pull away immedi-
ately. 
Avoid high engine speeds and driving at
full t

hrottle until the engine has reached
its operating temperature. *
NOTE Damag
e to the catalytic converter
due to non-combusted fuel The engine is not running smoothly and is mis-
Nr

ing.
Non-combusted fuel may get into the catalytic
converter. 
Only depress the accelerator pedal
slightl

y. 
Have the cause r
ectiNed immediately at
a qualiNed specialist workshop. *
NOTE R
educed battery life due to frequent
short-distance trips The 12 V battery may not be
suPcientl
y
charged when the vehicle is used only for
short-distance trips. This reduces the life of
the battery. 
Drive longer distances regularly to
c

harge the battery. *
NOTE Damag
e to the vehicle due to not
observing the maximum permitted head-
room clearance If the vehicle height is greater than the maxi-
mum per
mitted headroom clearance, the roof
and other parts of the vehicle may be dam-
aged. 
Observe the signposted headroom clear-
ance. 
If the vehicle height is greater than the
per
mitted headroom clearance, do not
enter. 216
Driving and parking


Observe the changed vehicle height with
add-on r oof equipment. Notes on driving with a roof load, trailer or fully
laden v
ehicle
When driving with a loaded roof luggage rack or
trailer as well as with a fully laden or fully occu-
pied vehicle, the vehicle's driving and steering
characteristics change.
You should bear the following in mind:
= Do not exceed the permissible roof load and
towing capacity. Also observe the technical
data in the printed Owner's Manual.
= Evenly distribute the roof load, and place
heavy objects at the bottom. Also comply with
the notes on loading the vehicle
( page 149).
= Drive attentively, and avoid suddenly pulling
away, braking and steering as well as rapid
cornering.
Notes on driving on salt-treated roads
The braking eMect is limited on salt-treated roads. Therefore, observe the following notes:
= due t

o salt build-up on the brake disks and
brakepads, the braking distance can increase
considerably or result in braking only on one
side
= maintain a much greater safe distance to the
vehicle in front
To remove salt build-up: = brake occasionally while paying attention to
the traPc conditions
= carefully depress the brake pedal at the end of
the journey and when starting the next jour-
ney
Notes on aquaplaning
Aquaplaning can take place once a certain
amount of water has accumulated on the road
surface.
Observe the following notes during heavy precipi-
tation or in conditions in which aquaplaning may
occur:
= reduce speed
= avoid tyre ruts =
a void sudden steering movements
= brake carefully
% Also observe the notes on regularly checking
wheels and tyr

es ( page 468).
Notes on driving through water on the road sur-
f
ace
Water which has entered into the vehicle can
damage the engine, electrics and transmission.
Water can also enter the air intake of the engine
and cause engine damage.
Observe the following if you must drive through
water:
= The water, when calm, may only reach the
lower edge of the vehicle body.
= Drive at a maximum speed of 10 km/h; water
can otherwise enter the vehicle interior or
engine compartment.
= Vehicles travelling in front, or oncoming vehi-
cles, can create waves which may exceed the
maximum permissible depth of the water.
The braking eMect of the brakes is reduced aser
fording. Brake carefully while paying attention to Driving and parking
217