MERCEDES-BENZ CLS COUPE 2022 Owners Manual

If you have to disconnect the 12 V battery, con-
t act a qualiNed specialist workshop.
Comply with safety notes and take protective
measures when handling batteries. Risk of explosion if the 12 V battery is
used im

properly. Fire, naked
Oames and smoking ar
e pro-
hibited when handling the battery. Avoid
creating sparks. Electrolyte or battery acid is corrosive.
A

void contact with the skin, eyes or cloth-
ing. Wear suitable protective clothing, in
particular gloves, an apron and a face
mask. Immediately rinse electrolyte or
acid splashes oM with clean water. Consult
a doctor immediately. Do not place heavy objects on the surface
of t
he battery or use the battery to sup-
port a person in any way. Wear safety glasses. Keep children away.
Observe this Owner's Manual.
Observe the following if you do not intend to use
t
he vehicle over an extended period of time:
= Non-plug-in hybrid: switch to standby mode
(  page 181).
= Alternatively: connect the battery to a battery
charger approved by Mercedes-Benz or con-
sult a qualiNed specialist workshop to discon-
nect the battery. Notes on starting assistance and charging the 12
V batt

ery All vehicles
When c

harging the battery and during starting
assistance, always use the jump-start connection
point in the engine compartment. *
NOTE Damag
e to the battery due to over-
voltage When charging using a battery charger without
a maximum c
harging voltage, the battery or
the on-board electronics may be damaged. 
Only use battery chargers with a maxi-
mum c

harging voltage of 14.8 V. &
WARNING Risk of e
xplosion due to the
ignition of hydrogen gas
If there is a short circuit or sparks are created,
t
here is a danger of hydrogen gas igniting
when you charge the battery. 
Make sure that the POSITIVE terminal of
a connect

ed battery does not come into
contact with vehicle parts. 
Never place metal objects or tools on a
batt
ery. 
When connecting and disconnecting the
batt
ery, always observe the sequence of
battery terminals described. 328
Breakdown assistance


During starting assistance, always take
car
e to connect only battery terminals of
identical polarity. 
During starting assistance, observe the
seq
uence described for connecting and
disconnecting the jump leads. 
Do not connect or disconnect the bat-
t

ery terminals with the engine running. &
WARNING Risk of e
xplosion due to explo-
sive mixture of gases
An explosive mixture of gases can escape
fr
om the battery during charging and starting
assistance. 
Fire, naked Oames, smoking and cr
eating
sparks must be avoided. 
Make sure there is adequate ventilation. 
Do not stand over the battery. &
WARNING Risk of e
xplosion from a frozen
battery
A discharged battery may freeze at tempera-
tur
es slightly above or below freezing point.
During starting assistance or battery charging,
battery gas can be released. 
Always allow a battery to thaw before
c
harging it or performing starting assis-
tance. If the indicator/warning lamps in the instrument
clus
ter do not light up at low temperatures, it is
very likely that the discharged battery has frozen.
In this case you may neither jump-start the vehi-
cle nor charge the battery.
The service life of a battery that has been thawed
may be dramatically shortened. The starting char-
acteristics may be impaired, especially at low
temperatures.
It is recommended that you have a thawed battery
checked at a qualiNed specialist workshop. All vehicles
* NOTE Damag
e caused by numerous or
extended attempts to start the engine Numerous or extended attempts to start the
engine ma

y damage the catalytic converter
due to non-combusted fuel. 
Avoid numerous and extended attempts
t

o start the engine. Observe the following points during starting assis-
t
ance and when charging the battery:
= Only use undamaged jump lead/charging
cables with a suPcient cross-section and
insulated terminal clamps.
= Non-insulated parts of the terminal clamps
must not come into contact with other metal
parts while the jump lead/charging cable is
connected to the battery/jump-start connec-
tion point.
= The jump lead/charging cable must not come
into contact with any parts which may move
when the engine is running. Breakdown assistance
329

=
Alw ays make sure that neither you nor the bat-
tery is electrostatically charged.
= Keep away from Nre and naked Oames.
= Do not lean over the battery.
Observe the additional following points when
charging the battery: = Only use battery chargers tested and
approved for Mercedes-Benz.
= Read the battery charger's operating instruc-
tions before charging the battery.
Observe the additional following points during
starting assistance:
= Starting assistance may only be provided
using vehicles, batteries or other jump start
devices with a nominal voltage of 12 V.
= The vehicles must not touch.
= Vehicles with a petrol engine: jump-start the
vehicle only when the engine and exhaust sys-
tem are cold. Starting assistance and charging the 12 V battery
Requirements:
= The v

ehicle is secured with the electric park-
ing brake.
= Vehicles with automatic transmission: the
transmission is in position j.
= The vehicle and all electrical consumers are
switched oM.
= The bonnet is open. Example: engine compartment

Slide cover 1 of POSITIVE cont
act 2 on the
jump-starting connection point in the direction
of the arrow. 
Connect POSITIVE contact 2 on y
our vehicle
to the positive terminal of the donor battery
using the jump lead/charging cable. Always 330
Breakdown assistance

begin with POSITIVE contact
2 on y our own
vehicle Nrst. 
During starting assistance: s
tart the engine of
the donor vehicle and run at idle speed. 
Connect the negative terminal of the donor
batt

ery and earth point 3 of your own vehicle
by using the jump lead/charging cable. Begin
with the donor battery Nrst.
During starting assistance: s
tart the engine of
your own vehicle. 
During the charging process: s
tart the charg-
ing process. 
During starting assistance: le
t the engines run
for several minutes. 
During starting assistance: bef
ore disconnect-
ing the jump lead, switch on an electrical con-
sumer on your own vehicle, e.g. the rear win-
dow heater or lighting.
When the starting assistance/charging process is
com
plete, perform the following steps: 
First, remove the jump lead/charging cable
fr
om earth point 3 and the negative terminal of the donor battery, then POSITIVE contact
2 and t

he positive terminal of the donor bat-
tery. Begin each time with the contacts on
your own vehicle Nrst. 
Aser r
emoving the jump lead/charging cable,
close cover 1 of POSITIVE contact 2.
Further information can be obtained at a q
ualiNed
specialist workshop. Replacing the 12 V battery

Observe the notes on the 12 V battery
( pag
e 326).
Mercedes-Benz recommends that you have the
12 V batt
ery replaced at a qualiNed specialist
workshop, e.g. at a Mercedes-Benz Service
Centre.
Observe the following notes if you want to replace
the battery yourself:
= Always replace a faulty battery with a battery
which meets the speciNc vehicle require-
ments. The vehicle is equipped with an AGM (Absorb-
ent Glass Mat) t

echnology battery or a lithium-
ion battery. Full vehicle functionality is only
guaranteed with an AGM battery or lithium-ion
battery. For safety reasons, Mercedes-Benz
recommends that you only use batteries which
have been tested and approved for your vehi-
cle by Mercedes-Benz.
= Carry over detachable parts, such as vent
hoses, elbow Nttings or terminal covers from
the battery being replaced.
= Make sure that the vent hose is always con-
nected to the original opening on the side of
the battery.
Fit any existing or supplied cell caps.
Otherwise, gases or battery acid could
escape.
= Make sure that detachable parts are recon-
nected in the same way. Breakdown assistance
331

Tow-starting or towing away
Permitted towing methods
*
NOTE Damag e from automatic braking If one of the following functions is activated,
t
he vehicle will brake automatically in certain
situations:
= Active Brake Assist
= Active Distance Assist DISTRONIC
= HOLD function
= Active Parking Assist
To avoid damage to the vehicle, deactivate
these systems in the following or similar situa-
tions: 
During towing. 
In a car wash. Mercedes-Benz recommends transporting your
v
ehicle in the case of a breakdown, rather than
towing it away.
For towing with both axles on the ground, use a
tow rope or tow rod. Do not use tow bar systems. *
NOTE Damag
e to the vehicle due to tow-
ing away incorrectly 
Observe the instructions and notes on
t

owing away. Vehicles with rear wheel drive
Permitted towing methods
Both axles on
t

he ground Yes, for a maximum of 50 km
at 50 km/h
Front axle
r
aised No
Rear axle
r
aised Yes, if the steering wheel is
Nx
ed in the centre position
with a steering wheel lock 4MATIC vehicles
Permitted towing methods
Both axles on
t

he ground Yes, for a maximum of 50 km
at 50 km/h
Front axle
r
aised No
Rear axle
r
aised No Towing with a raised axle:
t
owing should be per-
formed by a towing company. Towing the vehicle with both axles on the ground

Observe the notes on the permitted towing
me
thods. 
Make sure that the battery is connected and
c

harged.
Observe the following points when the battery is
disc
harged:
= the vehicle cannot be started. 332
Breakdown assistance

=
t he electric parking brake cannot be released
or applied
= Vehicles with automatic transmission: the
transmission cannot be shised to position i
or j.
% Vehicles with automatic transmission: if t
he
transmission cannot be shised to position i
or if the display does not show anything,
transport the vehicle ( page 334). A towing
vehicle with lising equipment is required for
vehicle transportation.
* NOTE Damag
e due to towing away at
excessively high speeds or over long dis-
tances The drivetrain could be damaged when towing
at e
xcessively high speeds or over long distan-
ces. 
A towing speed of 50 km/h must not be
e

xceeded. 
A towing distance of 50 km must not be
e

xceeded. &
WARNING Risk of accident when t
owing a
vehicle which is too heavy
If the vehicle to be tow-started or towed away
is hea
vier than the permissible gross mass of
your vehicle, the following situations can
occur:
= the towing eye may become detached.
= the vehicle/trailer combination may
swerve or overturn. 
Before tow-starting or towing away,
c

heck if the vehicle to be tow-started or
towed away exceeds the permissible
gross mass. If a vehicle has to be tow-started or towed away,
its per
missible gross mass must not exceed the
permissible gross mass of the towing vehicle. 
Information on the permissible gross mass of
t

he vehicle can be found on the vehicle identi-
Ncation plate ( page 360). 
Vehicles with automatic transmission: do no
t
open the driver's door or front passenger door; the transmission otherwise automati-
call

y shiss to position j. 
Fit the towing eye ( pag
e 335). 
Fasten the towing device.
* NOTE Damag
e due to incorrect connec-
tion of the tow bar 
Only connect the tow rope or tow bar to
t
he towing eyes. 
Deactivate the automatic locking mechanism . 
Do not activate the HOLD function. 
Deactivate tow-away protection ( pag
e 96). 
Deactivate Active Brake Assist ( pag
e 208). 
Vehicles with automatic transmission: shis t
o
position i. 
Release the electric parking brake. Breakdown assistance
333

&
WARNING Risk of accident due t o limited
safety-related functions during the towing
process
Safety-related functions are limited or no lon-
g
er available in the following situations:
= the vehicle is switched oM.
= the brake system or power steering system
is malfunctioning.
= the energy supply or the on-board electri-
cal system is malfunctioning.
When your vehicle is towed away, signiNcantly
more eMort may be required to steer and
brake than is normally required. 
Use a tow bar. 
Make sure that the steering wheel can
mo

ve freely before towing the vehicle
away. *
NOTE Damag
e due to excessive tractive
power If you pull away sharply, the tractive power
ma

y be too high and the vehicles could be
damaged. 
Pull away slowly and smoothly. Loading the vehicle for transport

Observe the notes on towing away
( pag
e 332). 
Connect the towing device to the towing eye
in or

der to load the vehicle.
% You can also attach the tow bar to the trailer
hitc
h. 
Vehicles with automatic transmission: shis t
he
automatic transmission to position i.
% Vehicles with automatic transmission: t
he
automatic transmission may be locked in posi-
tion j in the event of damage to the electri-
cal system. To shis to i, provide the on- board electrical system with power
(
 pag

e 330). 
Load the vehicle onto the transporter. 
Vehicles with automatic transmission: shis t
he
automatic transmission to position j. 
Use the electric parking brake to secure the
v

ehicle against rolling away. 
Only secure the vehicle by the wheels.
Vehicles with ADS PLUS (Adaptive Damping Sys-
t
em PLUS) &
WARNING Risk of an accident when tr
ans-
porting vehicles with Adaptive Damping
System PLUS
When transporting vehicles with Adaptive
Dam
ping System PLUS, the vehicle/trailer
combination may begin to rock and start to
skid. 
Load the vehicle correctly onto the
tr
ansporter. 
Secure the vehicle on all four wheels
wit

h suitable tensioning straps. 334
Breakdown assistance


Do not exceed the maximum permissible
speed of 60 km/h
when transporting. *
NOTE Damag
e to the vehicle from secur-
ing it incorrectly 
Aser loading, t
he vehicle must be
secured on all four wheels. Otherwise,
the vehicle could be damaged. 
A minimum distance of 20 cm upwards
and 10 cm
downwards must be kept to
the transport platform. 
Secure the vehicle on all four wheels aser
loading. 4MATIC vehicles/vehicles with automatic trans-
mission 
Make sure that the front and rear axles come
t
o rest on the same transportation vehicle.
* NOTE Damag
e to the drive train due to
incorrect positioning of the vehicle 
Do not position the vehicle above the
connection point of t

he transport vehi-
cle. Towing eye storage location
Towing eye is located under the boot
Ooor
.%
Depending on the vehicle version, the towing
e
ye is in a diMerent position in the boot. Fitting and removing the towing eye Breakdown assistance
335


Press the mark on cover 1 in wards and
remove.
Depending on the vehicle version, it is neces-
sary to take an additional step to unlock this
by pressing on the side of the release clips.
The cover beneath it can then be pulled
forward and removed at the recess. 
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. 
Aser r
emoving the towing eye, 1 engage the
cover in the bumper.
* NOTE Damag
e to the vehicle due to incor-
rect use of the towing eye When recovering the vehicle by towing it out
using t

he towing eye, the vehicle may be dam-
aged. 
Only use the towing eye for towing or
unhooking t
he vehicle. 
Do not use the towing eye for towing out
dur
ing recovery. *
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
Vehicles with automatic transmission
* NOTE Damag
e to the automatic transmis-
sion due to tow-starting The automatic transmission may be damaged
in t
he process of tow-starting vehicles with
automatic transmission. 
Vehicles with automatic transmission
mus

t not be tow-started. 
Vehicles with an automatic transmission must
no

t be tow-started. 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. 336
Breakdown assistance

*
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 the label. The fuse ratings and further
information to be observed can be found in the
fuse assignment diagram.
Fuse assignment diagram: on the fuse box in the
boot (  page 339).
* 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 various fuse
boxes: = Fuse box in the engine compartment on the
driver's side ( page 337)
= Fuse box on the driver's side of the cockpit
( page 338)
= Fuse box in the front passenger footwell
(  page 339)
= Fuse box in the boot on the right-hand side of
the vehicle, when viewed in the direction of
travel ( page 339) Opening and closing the fuse box in the engine
com

partment Requirements
=
A dr

y cloth and a screwdriver are available.
Observe the notes on electrical fuses
(  page 336).
Opening &
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 the vehicle Nrst if you need to open
the bonnet. Breakdown assistance
337