2022 MERCEDES-BENZ S-CLASS SALOON LONG Owners Manual

Towing eye storage location
Towing eye 1 is locat
ed under the boot Ooor.
Depending on the vehicle equipment, the towing
eye may be located at another position in the
boot. Fitting and removing the towing eye

Press the mark on cover 1 in
wards and
remove. 
Screw in the towing eye clockwise as far as it
will go and tight

en. Vehicles with a trailer hitch:
v
ehicles with a trailer
hitch do not have a rear bracket for the towing
eye. Fasten the tow bar to the trailer hitch. 
Make sure that cover 1 eng
ages in the
bumper when you remove the towing eye.
* NOTE Damag
e to the vehicle due to incor-
rect use of the towing eye or trailer hitch When a towing eye or trailer hitch is used to
r
ecover a vehicle, the vehicle may be damaged
in the process. 
Only use the towing eye or trailer hitch to
t

ow away or tow start the vehicle. 
Do not use the towing eye or trailer hitch
t

o tow the vehicle during recovery. Tow-starting the vehicle (emergency engine start)
*
NOTE Damag
e to the automatic transmis-
sion due to tow-starting Tow-starting the vehicle can damage the auto-
matic tr

ansmission. 462
Breakdown assistance


Do not tow-start the vehicle. 
Do not tow-start the vehicle. Electrical fuses
Notes on electrical fuses
&
WARNING Risk of accident and injur y due
to overloaded lines
If you manipulate or bridge a faulty fuse or if
y
ou replace it with a fuse with a higher amper-
age, the electric line could be overloaded.
This could result in a Nre.
Always replace faulty fuses with speci-
Ned ne

w fuses containing the correct
amperage. *
NOTE Damag
e due to incorrect fuses Using incorrect fuses can result in damage to
electr
ical components or systems or their
functions being considerably restricted. 
Use only fuses approved for Mercedes-
Benz wit

h the respective speciNed fuse
rating. Blown fuses must be replaced with fuses of the
same r

ating, which you can recognise by the col-
our and fuse rating. The fuse ratings and further
information to be observed can be found in the
fuse assignment diagram.
Fuse assignment diagram: in the vehicle docu-
ment wallet.
* NOTE Damag
e or malfunctions caused by
moisture Moisture may cause damage to the electrical
sy
stem or cause it to malfunction. 
When the fuse box is open, make sure
t

hat no moisture can enter the fuse box. 
When closing the fuse box, make sure
t

hat the seal of the lid is positioned cor-
rectly on the fuse box. If the newly inserted fuse also blows, have the
cause tr
aced and rectiNed at a qualiNed specialist
workshop.
Ensure the following before replacing a fuse:
= The vehicle is secured against rolling away.
= All electrical consumers are switched oM.
= The vehicle is switched oM.
The electrical fuses are located in the following
fuse boxes:
= Fuse box in the engine compartment on the
driver's side (  page 464)
= Fuse box on the driver's side of the cockpit
(  page 466)
= Fuse box in the front passenger footwell
(  page 466)
= Fuse box in the boot on the right-hand side of
the vehicle, when viewed in the direction of
travel (  page 466) Breakdown assistance
463

Opening and closing the fuse box in the engine
com
partment Requirements:
= Obser

ve the notes on electrical fuses
(  page 463).
= Have the following tools readily available:
- a dry cloth
- a screwdriver with an appropriate head
Opening
% Depending on the vehicle equipment, access
t

o the fuse box may be limited. Mercedes-
Benz recommends consulting a qualiNed spe-
cialist workshop, e.g. a Mercedes-Benz
Service Centre. &
WARNING Risk of injur
y from using the
windscreen wipers when the bonnet is
open
If the windscreen wipers start moving when
t
he bonnet is open, you could be trapped by
the wiper linkage. 
Always switch oM t
he windscreen wipers
and vehicle before opening the engine
bonnet. 
Release the rotary catches on cover 1 and
pull t
he cover up and out. 
Remove any existing moisture from the fuse
bo

x using a dry cloth. 
Depending on the vehicle equipment, there
ma
y be an electrical component 2 on the
fuse box lid. If present, unscrew screw 3 and
put the component to the side without discon-
necting the electrical connection. 464
Breakdown assistance


If present, release hoses 4 fr om the retaining
clips on the fuse box and vehicle body. 
If present, release hoses 5 fr
om the retaining
clips in the engine compartment and vehicle
body. 
Unscrew screws 6 and f
old out bar 7. 
Unscrew screws 8 and r
emove fuse box lid
9 to the side.
Closing 
Check whether the seal is positioned correctly
in lid 9. 
Place lid 9 on t
he fuse box and tighten
screws 8. Breakdown assistance
465


Fold back bar 7 and tight en screws 6. 
If present, engage hoses 5 in t
he retaining
clips in the engine compartment and vehicle
body. 
If present, engage hoses 4 in t
he retaining
clips on the fuse box and vehicle body. 
If present, insert electrical component 2 int
o
the holder on the fuse box lid and tighten
screws 3. 
Insert cover 1 and eng
age the rotary
catches. Opening and closing the fuse box in the cockpit
Requirements:
= Obser

ve the notes on electrical fuses
(  page 463). 
Open cover 1 in t
he direction of the arrow
and remove it. Opening and closing the fuse box in the front
passeng

er footwell Requirements:
= Obser

ve the notes on electrical fuses
(  page 463). 
Open cover 1 in t he direction of the arrow
and remove it. Opening and closing the fuse box in the boot
Requirements:
= Obser

ve the notes on electrical fuses
(  page 463). 466
Breakdown assistance


Fold cover 1 do wn in the direction of the
arrow. Breakdown assistance
467

Notes on noise or unusual handling characteris-
tics
Mak
e sure there are no vibrations, noises or
unusual handling characteristics when the vehicle
is in motion. This may indicate that the wheels or
tyres are damaged. Hidden tyre damage could
also be causing the unusual handling characteris-
tics.
If you suspect that a tyre is defective, reduce your
speed immediately and have the tyres and wheels
checked at a qualiNed specialist workshop. Notes on regularly inspecting wheels and tyres
&
WARNING Risk of injur
y due to damaged
tyres
Damaged tyres can cause tyre pressure loss. 
Check the tyres regularly for signs of
damag
e and replace any damaged tyres
immediately. &
WARNING Risk of aq
uaplaning due to
insuPcient tyre tread
*nsuPcient tyr
e tread will result in reduced
tyre grip.
The risk of aquaplaning is increased on wet
roads, especially when the speed of the vehi-
cle is not adapted to suit the conditions. 
Thus, you should regularly check the
tr

ead depth and the condition of the
tread across the entire width of all tyres.
Minimum tread depth for:
= Summer tyr

es: 3 mm
= M+S tyres: 4 mm 
For safety reasons, replace the tyres
bef
ore the legally-prescribed limit for the
minimum tread depth is reached. Carry out the following checks on all wheels regu-
lar
ly, at least once a month or as required, for
example, prior to a long journey or driving oM-
road
= Check the tyre pressure (  page 469).=
V
isually inspect wheels and tyres for damage.
= Check the valve caps.
= Visual check of the tyre tread depth and the
tyre contact surface across the entire width.
The minimum tread depth for summer tyres is
3 mm and for winter tyres 4 mm. Notes on snow chains
&
WARNING Risk of accident due t
o incor-
rectly Ntted snow chains
If you have Ntt
ed snow chains to the front
wheels, they may drag against the vehicle
body or chassis components. 
Never Nt sno
w chains to the front
wheels. 
Only Nt sno
w chains on the rear wheels
in pairs. 468
Wheels and tyres

*
NOTE Damag e to components of the vehi-
cle body or chassis due to Ntted snow
chains If you
Nt sno
w chains to the front wheels of
4MATIC vehicles, you may damage compo-
nents of the vehicle body or chassis. 
Only Nt sno
w chains to the rear wheels
of 4MATIC vehicles. Observe the following notes when using snow
c

hains:
= Snow chains are only permissible for certain
wheel/tyre combinations. You can obtain
information about this from a Mercedes-Benz
Service Centre.
= For safety reasons, only use snow chains that
have been speciNcally approved for your vehi-
cle by Mercedes-Benz, or snow chains with
the same quality standard.
= Comply with the installation instructions of the
snow chain manufacturer.
= If snow chains are Ntted, the maximum per-
missible speed is 50 km/h. =
V
ehicles with Active Parking Assist: do not use
Active Parking Assist when snow chains are
Ntted.
= Vehicles with level control: if snow chains are
Ntted, only drive at raised vehicle level
( page 302).
= Vehicles with rear axle steering: if snow chains
are Ntted, only drive with snow chain mode
active (  page 469).
% You can deactivate ESP n
t
o pull away
( page 268). This allows the wheels to spin,
achieving an increased driving force. Activating or deactivating snow chain mode
Multimedia sy
stem:
4 © 5