MERCEDES-BENZ CLS COUPE 2022 Service Manual

Smartphone integration (e.g. Android Auto or
Apple CarPla
yn
)
If your vehicle is accordingly equipped, you can
connect your smartphone or another mobile end
device to the vehicle. You can then control them
by means of the control elements integrated in
the vehicle. Images and audio from the smart-
phone can be output via the multimedia system.
Certain information is simultaneously transferred
to your smartphone. Depending on the type and
integration, thisincludes position data, day/night
mode and other general vehicle statuses. For
more information please consult the Owner's
Manual of the vehicle/infotainment system.
This integration allows the use of selected smart-
phone apps, suchas navigation or music player
apps. There is no further interaction between the
smartphone and the vehicle; in particular, vehicle
data is not directly accessible. The type of addi-
tional data processing is determined by the pro-
vider of the app being used. Which settings you
can make, if any, depends on the speciNc app and
the operating system of your smartphone. Online services
Wireless network connection
If y

our vehicle has a wireless network connection,
it enables data to be exchanged between your
vehicle and additional systems. The wireless net-
work connection is made possible by the vehicle's
own transmitter and receiver or by a mobile end
device that you have brought into the vehicle,
forexample, a smartphone. Online functions can
be used via the wireless network connection. This
includes online services and applications/apps
provided to you by the manufacturer or by other
providers.
Manufacturer's services
Regarding the manufacturer's online services, the
individual functions are described by the manu-
facturer in a suitable place, forexample, in the
Owner's Manual or on the manufacturer's web-
site, where the relevant data protection informa-
tion is also given. Personal data may be used for
the provision of online services. Data are
exchanged via a secure connection, suchas the
manufacturer's designated IT systems. Any per-
sonal data which are collected, processed and used, other than for the provision of services, is
done so e
xclusively on the basis of legal permis-
sion. This is the case, forexample, for a legally
prescribed emergency call system, a contractual
agreement or when consent has been given.
You can have services and functions, some of
which are subject to a fee, activated or deactiva-
ted. This excludes legally prescribed functions and
services, suchas an emergency call system.
Third party services
If you use online services from other providers
(third parties), these services are the responsibil-
ity of the provider in question and subject to that
provider's data protection conditions and terms of
use. As a general rule, the manufacturer has no
inOuence on the content exchanged.
For this reason, when services are provided by
third parties, please ask the service provider in
question for information about the type, extent
and purpose of the collection and use of personal
data. 38
General notes

Data protection rights
Depending on your country or the equipment and
r
ange of functions of your vehicle as well as the
services you use and the services on oMer, you
are entitled to diMerent data protection rights.
Further information on data protection and your
data protection rights can either be found on the
manufacturer's website or you will receive this
information as part of the various services and
service oMers. There you will also Nnd the contact
information for the manufacturer and its data pro-
tection oPcers.
At a workshop, forexample, with the support of a
specialist and possibly for a fee, you can have
data read out which is stored only locally in the
vehicle. Copyright
Inf
ormation on licences for free and open-source
sosware used in your vehicle can be found on the
data carrier in your vehicle document wallet and
with updates on the following website:
https://www.mercedes-benz.com/opensource General notes
39

Restraint system
Protection provided by the restraint system
The restraint system includes the following com-
ponents:
=
Seat belt sy
stem
= Airbags
= Child restraint system
= Child seat anchors
The restraint system can help prevent the vehicle
occupants from coming into contact with parts of
the vehicle interior in the event of an accident. In
the event of an accident, the restraint system can
also reduce the forces to which the vehicle occu-
pants are subjected.
A seat belt can only provide the best level of pro-
tection if it is worn correctly. Depending on the
detected accident situation, seat belt tensioners
and/or airbags supplement the protection oMered
by a correctly worn seat belt. Seat belt tensioners
and/or airbags are not deployed in every acci-
dent. In order for the restraint system to provide the
int

ended level of protection, each vehicle occu-
pant must observe the following information:
= Fasten seat belts correctly.
= Sit in an almost upright seat position with their
back against the seat backrest.
= Sit with their feet resting on the Ooor, if possi-
ble.
= Always secure persons under 1.50 m tall in an
additional restraint system suitable for
Mercedes-Benz vehicles.
However, no system available today can com-
pletely eliminate injuries and fatalities in every
accident situation. In particular, the seat belt and
airbag generally do not protect against objects
penetrating the vehicle from the outside. It is also
not possible to completely rule out the risk of
injury caused by the airbag deploying. Limitations of the protection provided by the
r
estraint system &
WARNING Risk of injur
y or death due to
modiNcations to the restraint system
Vehicle occupants may no longer be protected
as int
ended if alterations are made to the
restraint system. 
Never alter the parts of the restraint sys-
t
em. 
Never tamper with the wiring or any elec-
tr
onic component parts or their sos-
ware. If it is necessary to modify the vehicle to accom-
modat
e a person with disabilities, contact a quali-
Ned specialist workshop.
Mercedes-Benz recommends that you use driving
aids which have been approved for your vehicle by
Mercedes-Benz. 40
Occupant safety

Restraint system functionality
When the vehicle is switched on, a self-test is per-
f
ormed, during which the 6 restraint system
warning lamp lights up. It goes out no later than a
few seconds aser the vehicle is started. The com-
ponents of the restraint system are then func-
tional. Malfunctioning restraint system
A malfunction has occurred in the restraint sys-
t

em if:
= the 6 restraint system warning lamp does
not light up when the vehicle is switched on
= the 6 restraint system warning lamp lights
up continuously or repeatedly during a journey &
WARNING Risk of injur
y due to malfunc-
tions in the restraint system
Components in the restraint system may be
activ
ated unintentionally or not deploy as
intended in an accident. 
Have the restraint system checked and
r

epaired immediately at a qualiNed spe-
cialist workshop. Function of the restraint system in an accident
How the restraint system works depends on the
se

verity of the impact detected and the apparent
type of accident:
= Frontal impact
= Rear impact
= Side impact
= Rollover
The activation thresholds for the components of
the restraint system are determined based on the
evaluation of the sensor values measured at vari-
ous points in the vehicle. This process is pre-emp-
tive in nature. The triggering/deployment of the
components of the restraint system must take
place in good time at the start of the collision.
Factors which can only be seen and measured
aser a collision has occurred cannot play a deci- sive role in airbag deployment. Nor do they pro-
vide an indication of airbag deplo

yment.
The vehicle may be deformed signiNcantly without
an airbag being deployed. This is the case if only
parts which are relatively easily deformed are
aMected and the rate of vehicle deceleration is
not high. Conversely, an airbag may be deployed
even though the vehicle suMers only minor defor-
mation. If very rigid vehicle parts such as longitu-
dinal members are hit, this may result in suP-
ciently high levels of vehicle deceleration.
Depending on the detected deployment situation,
the components of the restraint system can be
activated or deployed independently of each
other:
= Seat belt tensioner: frontal impact, rear
impact, side impact, rollover
= Driver's airbag, front passenger airbag: frontal
impact
= Knee airbag: frontal impact
= Side airbag: side impact
= Window airbag: side impact, rollover, frontal
impact Occupant safety
41

=
PRE-S AFEn
Impulse Side: side impact
The front passenger airbag can only be deployed
in an accident if the PASSENGER AIR BAG OFF
indicator lamp is oM. If the front passenger seat is
occupied, make sure, both before and during the
journey, that the status of the front passenger air-
bag is correct (  page 50).&
WARNING Risk of bur
ns from hot airbag
components
The airbag parts are hot aser an airbag has
been deplo
yed. 
Do not touch the airbag parts. 
Have a deployed airbag replaced at a
q
ualiNed specialist workshop as soon as
possible. Mercedes-Benz recommends that you have the
v

ehicle towed to a qualiNed specialist workshop
aser an accident. Take this into account, particu-
larly if a seat belt tensioner is triggered or an air-
bag deployed. If the seat belt tensioners are triggered or an air-
bag is deplo
yed, you will hear a bang, and a small
amount of powder may also be released:
= The bang will not generally aMect your hearing.
= In general, the powder released is not hazard-
ous to health but may cause short-term
breathing diPculties to persons suMering from
asthma or other pulmonary conditions.
Provided it is safe to do so, leave the vehicle
immediately or open the window in order to
prevent breathing diPculties. Seat belts
Protection provided by the seat belt
Always fasten your seat belt correctly before
s

tarting a journey. A seat belt can only provide
the best level of protection if it is worn correctly. &
WARNING Risk of injur
y or death due to
incorrectly fastened seat belt
If the seat belt is not worn correctly, it cannot
per
form its intended protective function. In addition, an incorrectly fastened seat belt
can also cause injur

ies, for example, in the
event of an accident or when braking or
changing direction suddenly. 
Always ensure that all vehicle occupants
ha

ve their seat belts fastened correctly
and are sitting properly. Always observe the instructions about the correct
dr

iver's seat position and adjusting the seat
(  page 98).
In order for the correctly worn seat belt to provide
the intended level of protection, each vehicle
occupant must observe the following information:
= The seat belt must not be twisted and must Nt
tightly and snugly across the body.
= The seat belt must be routed across the
centre of the shoulder and as low down across
the hips as possible.
= The shoulder section of the seat belt should
not touch your neck nor be routed under your
arm or behind your back.
= Avoid wearing bulky clothing, e.g. a winter
coat. 42
Occupant safety

=
Push t he lap belt down as far as possible
across your hips and pull tight with the shoul-
der section of the belt. Never route the lap
belt across your abdomen.
Pregnant women must also take particular
care with this.
= Never route the seat belt across sharp, poin-
ted, abrasive or fragile objects.
= Only one person should use each seat belt at
any one time.
= Never secure objects with a seat belt if the
seat belt is also being used by one of the vehi-
cle's occupants.
Also ensure that no objects, e.g. a cushion,
are ever placed between a person and the
seat.
If children are travelling in the vehicle, be sure to
observe the instructions and safety notes on
"Children in the vehicle" (  page 55).
Always observe the instructions for loading the
vehicle when securing objects, luggage or loads
( page 112). Limitations of the protection provided by the seat
belt
&
WARNING Risk of injur
y or death due to
incorrect seat position
The seat belt will not oMer t
he intended level
of protection if you have not moved the seat
backrest to an almost vertical position.
In particular, you may slip under the seatbelt
and injure yourself. 
Adjust the seat properly before begin-
ning y

our journey. 
Always ensure that the seat backrest is
in an almos

t vertical position and that
the shoulder section of your seat belt is
routed across the centre of your shoul-
der. &
WARNING Risk of injur
y or death when
additional restraint systems are not used
for persons with a smaller stature
Persons under 1.50 m tall cannot wear the
seat belt cor
rectly without a suitable addi-
tional restraint system. 
Always secure persons under 1.50 m tall
in a suit
able restraint system. &
WARNING Risk of injur
y or death due to
damaged or modiNed seat belts
Seat belts cannot provide protection in the fol-
lo
wing situations:
= the seat belt is damaged, has been modi-
Ned, is extremely dirty, bleached or dyed
= the seat belt buckle is damaged or
extremely dirty
= modiNcations have been made to the seat
belt tensioner, seat belt anchorage or seat
belt retractor
Seat belts may sustain non-visible damage in
an accident, e.g. due to glass splinters. Occupant safety
43

ModiNed
or damag ed seat belts could tear or
fail in the event of an accident, for example.
ModiNed seat belt tensioners could acciden-
tally trigger or fail to function as intended. 
Never modify the seat belt system, for
e

xample the seat belt, seat belt buckle,
seat belt tensioner, seat belt anchorage
and seat belt retractor. 
Make sure that the seat belts are undam-
ag

ed, not worn and clean. 
Always have the seat belts checked
immediat
ely aser an accident at a quali-
Ned specialist workshop. Mercedes-Benz recommends that you use seat
belts whic

h have been approved for your vehicle
by Mercedes-Benz. &
WARNING Risk of injur
y or death from
deployed pyrotechnic seat belt tensioners
Pyrotechnic seat belt tensioners that have
been deplo
yed are no longer operational and
are unable to perform their intended protec-
tive function. 
Therefore, have deployed pyrotechnic
seat belt t

ensioners immediately
replaced at a qualiNed specialist work-
shop. Mercedes-Benz recommends that you have the
v

ehicle towed to a qualiNed specialist workshop
aser an accident.
* NOTE Damag
e caused by trapping the
seat belt If an unused seat belt is not fully retracted, it
ma

y become trapped in the door or in the seat
mechanism. 
Always ensure that an unused seat belt
is full

y retracted. Fastening and adjusting seat belts
If the seat belt is pulled quickly or sharply, the
seat belt r
etractor locks. The seat belt strap can-
not be pulled out any further. 
Always engage seat belt tongue 1 of t
he seat
belt into seat belt buckle 2 of the corre-
sponding seat. 
To adjust the seat belt height: pr
ess button 3
on the seat belt outlet and slide the seat belt
outlet to the desired position. 
To engage the seat belt outlet: r
elease button
3 and ensure that the seat belt outlet
engages. 44
Occupant safety

%
A seat belt can only provide the best level of
pr otection if it is worn correctly. Observe the
notes on fastening the seat belt (  page 42).
* NOTE Deplo
yment of components of the
restraint system when the front passenger
seat is unoccupied and a seat belt is
buckled When the front passenger seat is unoccupied
and t
he seat belt tongue of the seat belt is
engaged in the seat belt buckle, components
of the restraint system may deploy unnecessa-
rily on the front passenger side, e.g. the seat
belt tensioner. 
Only buckle the seat belts as intended. %
Observe the notes on stowage areas
( pag

e 112).
Information on Ntting a child restraint system
and on children travelling in the vehicle can
be found in the "Children in the vehicle" sec-
tion ( page 59). Seat belt adjustment function
Vehicles with PRE-SAFE
n
: aser a fr
ont seat belt
has been fastened, the automatic seat belt adjust-
ment may apply a certain tightening force. Do not
hold the seat belt tightly while it is adjusting.
You can activate and deactivate the seat belt
adjustment function using the multimedia system
(  page 45). Activating/deactivating seat belt adjustment via
t
he multimedia system Multimedia system:
4 © 5
Settings 5
Vehicle 
Activate or deactivate Belt adjustment. Releasing seat belts

Press the release button in the seat belt
buc
kle and guide the seat belt back with the
seat belt tongue. Seat belt warning function for the driver and front
passeng
er The

When the vehicle is switched on, the rear seat
belt s
tatus display informs you for a certain
amount of time which rear seat belt is not fas-
tened.
You can immediately dismiss the rear seat belt
status display using the back button on the les-
hand side of the steering wheel ( page 251).
If a vehicle occupant unfastens a seat belt in the
rear while the vehicle is motion, the rear seat belt
status display appears again.
In addition, a warning tone may sound. In this
case, the rear seat belt status display cannot be
hidden using the back button on the les-hand side
of the steering wheel. Airbags
Overview of airbags
1
Knee airbag
2 Driver's airbag
3 Front passenger airbag
4 Window airbag
5 Side airbag
The installation location of an airbag is identiNed
b
y the AIRBAG symbol.
When enabled, an airbag can provide additional
protection for the respective vehicle occupant. Potential protection provided by each airbag:
= Knee airbag: t

high, knee and lower leg
= Driver's airbag, front passenger airbag: head
and ribcage
= Window airbag: head
= Side airbag: ribcage, also pelvis for front seat
occupants &
WARNING Risk of injur
y or death due to
an enabled co-driver airbag
If the co-driver airbag is enabled, a child on
t
he co-driver seat may be struck by the co-
driver airbag during an accident. 
NEVER use a rearward-facing child
r
estraint system on a seat with an ENA-
BLED FRONT AIRBAG. DEATH or SERI-
OUS INJURY to the CHILD can occur. When Ntting
a c
hild restraint system to the front
passenger seat, observe the vehicle-speciNc infor-
mation (  page 71). Also, always observe the
notes on rearward-facing or forward-facing child
restraint systems on the front passenger seat
(  page 70). 46
Occupant safety

Information on the automatic front passenger air-
bag shut
oM
Only when the PASSENGER AIR BAG OFF indica-
tor lamp is oM can the front passenger airbag
deploy in the event of an accident. If the front
passenger seat is occupied, make sure, both
before and during the journey, that the status of
the front passenger airbag is correct
(  page 50).
* NOTE Deplo
yment of components of the
restraint system when the front passenger
seat is unoccupied In an accident, the components of the
r
estraint system may deploy unnecessarily on
the front passenger side if:
= There are heavy objects on the front
passenger seat.
= The seat belt tongue is engaged in the seat
belt buckle of the front passenger seat and
the front passenger seat is unoccupied. 
Stow objects in a suitable place. 
Only one person should use each seat
belt at an
y one time. Depending on the detected accident situation, the
windo
w airbag on the front passenger side may
deploy. The airbag is deployed regardless of
whether the front passenger seat is occupied. Protection provided by the airbags
Depending on the accident situation, an airbag
ma
y supplement the protection oMered by a cor-
rectly fastened seat belt. &
WARNING Risk of injur
y or death due to
an incorrect seat position
If you deviate from the correct seat position,
t
he airbag cannot perform its intended protec-
tive function.
Each vehicle occupant must make sure of the
following:
= Fasten seat belts correctly. Pregnant
women must take particular care to ensure that the lap belt never lies across the
abdomen.
= A

dopt the correct seat position and keep
as far away as possible from the airbags.
= Observe the following information. 
Always make sure that there are no
objects be
tween the airbag and vehicle
occupant. To avoid the risks resulting from the deployment
of an airbag, eac

h vehicle occupant must observe
the following information in particular:
= Before starting your journey, adjust your seat
correctly; the driver's seat and front
passenger seat should be moved as far back
as possible.
When doing so, always observe the informa-
tion on the correct driver's seat position
( page 98).
= Only hold the steering wheel by the steering
wheel rim. This allows the airbag to be fully
deployed. Occupant safety
47