2014 MERCEDES-BENZ CLA airbag

1, 2, 3 ...
12Vsocket
see Sockets
4ETS
see ETS/4ETS (Electronic
TractionSystem)
4MATIC (permanent all-wheel
drive)
Displaymessage............................238
4MATIC (permanent four-wheel
drive)..................................................174
A
ABS (Anti-lock Braking System)
Display message............................213
Function/notes ................................ 61
Important safety notes....................61
Warning lamp ................................. 242
Activating/deactivating cooling
with air dehumidification.................125
Active Parking Assist
Canceling .......................................182
Detecting parking spaces..............179
Display message............................231
Exitingaparking space..................181
Function/notes.............................178
Important safety notes..................178
Parking..........................................180
ADAPTIVE BRAKE................................. 69
Adaptive Brake Assist
Function/notes ................................ 63
Adaptive Highbeam Assist
Display message............................226
Function/notes.............................108
Switching on/off...........................109
Switching on/off (on-board
computer)......................................207
Additional speedometer...................206
Additives (engine oil)........................348
Airbags
Deployment.....................................39
Display message............................222
Front air bag (driver, front
passenger).......................................43
Important safety notes....................41
Knee bag .......................................... 43
PASSENGER AIR BAG OFF
indicator lamp..................................45
Safety guidelines.............................40
Side impact airbag..........................44
Windowcurtain air bag....................45
Air-conditioning system
see Climate control
Airvents
Important safetynotes..................132
Rear...............................................133
Setting...........................................132
Setting the center air vents...........132
Setting the side air vents...............132
Alarm system
see ATA (Anti-Theft Alarm system)
Ambient lighting
Setting the brightness (on-board
computer)......................................207
AMG
Menu (on-board computer)............209
Performance Seat............................96
Anti-lockbraking system
see ABS (Anti-lock Braking System)
Anti-theft alarm system
see ATA (Anti-Theft Alarm system)
Ashtray...............................................262
Assistance display (on-board
computer)..........................................203
Assistance menu (on-board
computer)..........................................202
ASSYST PLUS
Displaying a service message........284
Hiding a service message..............284
Notes.............................................284
Resetting the service interval
display...........................................284
Service message ............................ 284
Special service requirements ......... 285
ATA (Anti-Theft Alarm system)
Activating/deactivating...................70
Function ...........................................70
Switching off the alarm....................70
ATTENTIONASSIST
Activating/deactivating.................204
Display message............................229
Function/notes.............................186
Audio menu (on-board computer)....200
4Index

Center console
Center console, upper section
FunctionPage
Audio system/COMAND;
see the separate operating
instructions
 Seat heating95
"PARKTRONIC175
!\rECO start/stop
function139
FunctionPage
Hazard warning
lamps107
PASSENGER AIRBAG
OFF indicator lamp45
Selects the drive
program146
AMG vehicles: ESP®66
32Centerconsole
At a glance

RImproper repairwork on the SRS creates a
risk of rendering the SRS inoperative or
causing unintended air bag deployment.
Work on the SRS must therefore only be
performed by qualified technicians.
Consult an authorized Mercedes-Benz
Center.
RFor your protection and the protection of
others, when scrapping the air bag unit or
ETD, our safety instructions must be
followed. These are available from any
authorized Mercedes-Benz Center.
RGiven the considerable deployment speed,
required inflation volume, and the material
of the air bags, there is the possibility of
abrasions or other, potentially more serious
injuries resulting from air bag deployment.
If you sell your vehicle, Mercedes-Benz
strongly recommends that you inform the
subsequent owner that the vehicle is
equipped with SRS. Also, refer them to the
applicable section in the Operator's Manual.
Air bags
Important safety notes
GWARNING
Using unsuitable seat covers could restrictor
even preventdeployment of the air bags
integrated into the seats. Consequently, the
air bags cannot protectvehicle occupants as
they are designed to do. In addition, the
function of the air bag deactivation system
could be restricted. This poses an increased
risk of injury or even fatal injury.
You should only use seat covers that have
been approved for the respective seat by
Mercedes-Benz.
GWARNING
The air bag parts are hot after the airbag has
been deployed. There is a risk of injury.
Do not touch the air bag parts. Have the
deployed air bags replaced at a qualified
specialist workshop as soon as possible.
GWARNING
Air bags are designed to reduce the potential
of injury and fatality in certain:
Rfrontal impacts (driver's/front-passenger
air bags and knee bags)
Rside impacts (side impact air bags and
window curtain air bags)
Rrollover (window curtain air bags)
However, no system available today can
completely eliminate injuries and fatalities.
When the air bags are deployed, a small
amount of powder temporarily comes out of
the air bags. This dust, however, is generally
neither harmful to your health, nor does it
indicate a fire in the vehicle. In order to
preventpotential breathing difficulties, you
may wish to get out of the vehicle as soon as
it is safe to do so. If you have any breathing
difficulty but cannot get out of the vehicle
after the air bag inflates, then get fresh air by
opening a window or door.
GWARNING
In order to reduce the potential danger of
injuries caused during the deployment of the
front air bags, the driver and front passenger
must always be correctly seated and wear
their seat belts.
For maximum protection in the event of a
collision, you must always be in the normal
seat position with your back against the
backrest.Fasten your seat belt and make sure
that it is correctly positioned on your body.
Occupant safety41
Safety
Z

As the airbag inflates with considerable
speed and force, a proper seating position
and correct positioning of the hands on the
steering wheel will help to keep you at a safe
distance from the air bag. Occupants who are
notwearing their seat belt, are not seated
properly or are too close to the air bag can be
seriously injured or killed by an air bag, as it
inflates with great force instantaneously:
Rsit with the seat belt fastened correctly and
in a position that is as upright as possible
with your back against the backrest.
Rmove the driver's seat as far back as
possible, still permitting proper operation
of vehicle controls. The distance from the
center of the driver's chest to the center of
the air bag cover on the steering wheel
must be at least 10 inches (25 cm). You
should be able to accomplish this by
adjusting the seat and steering wheel. If
you have any difficulties, please contact an
authorized Mercedes-Benz Center.
Rdo not lean your head or chest close to the
steering wheel or dashboard.
Ronly hold the steering wheel on the outside.
Placing hands and arms inside the rim can
increase the risk and potential severity of
hand/arm injury if the driver front air bag
inflates.
Radjust the front-passenger seat as far back
as possible from the dashboard when the
seat is occupied.
Roccupants, especially children, should
never place their bodies or lean their heads
in the area of the door where the side
impact air bag inflates.This could result in
serious or fatal injuries should the side
impact air bag be deployed. Always sit as
upright as possible, wear the seat belt
properly and use an appropriately sized
infant restraint, toddler restraint or booster
seat recommended for the size and weight
of the child.
Failure to follow these instructions can result
in severe injuries to you or other occupants.
If you sell your vehicle, it is important that you
make the buyer aware of this safety
information. Be sure to give the buyer this
Operator's Manual.
If the air bags are deployed, you will hear a
bang, and a small amount of powder may also
be released. Only in rare cases will the bang
affect your hearing. The powder that is
released generally does not constitute a
health hazard and does not indicate that there
is a fire in the vehicle. The dust might cause
some temporary breathing difficulty for
people with asthma or other breathing
trouble. To avoid this, you may wish to get out
of the vehicle as soon as it is safe to do so.
You can also open the window to allow fresh
air to enter the vehicle interior. TheSRS
warning lamp lights up.
The air bag installation locations are
identified by the AIR BAG symbol.
The air bags are deployed if the air bag control
unit detects the need for deployment.Only in
the event of such a situationwill the air bags
provide their supplemental protection.
If the driverand front passengerdo not wear
their seat belts, it is not possible for the air
bags to provide their supplemental
protection.
In the event of other types of impacts and
impacts below air bag deployment
thresholds, the air bags will not deploy. The
driver and passenger will then be protected
to the extentpossible by a properly fastened
seat belt.Aproperly fastened seat beltis also
needed to provide the best possible
protection in a rollover.
Air bags provide additional protection; they
are not, however, a substitute for seat belts.
All vehicle occupants must fasten their seat
belts regardless of whether your vehicle is
equipped with air bags or not.
It is important for your safety and that of your
passenger to have deployed air bags replaced
and to have any malfunctioning air bags
repaired. This will help to make sure the air
bags continue to perform their protective
42Occupant safety
Safety

function for the vehicle occupants in the
event of a crash.
iAfter an airbag has been deployed, have
the vehicle towed to the nearestqualified
specialist workshop, evenifyour vehicle is
ready to drive.
Front air bags
Driver's air bagdeploys in front of the
steering wheel; front-passenger front air
bagdeploys in front of and above the glove
box.
The front air bags increase protection for the
driver's and front passenger's head and
chest.
They are deployed:
Rat the start of an accident with a high rate
of vehicle acceleration or deceleration in a
longitudinal direction
Rif the system determines that air bag
deployment can offer additional protection
to that provided by the seat belt
Rdepending on whether the seat belt is being
used
Rindependently of other air bags in the
vehicle
If the vehicle rolls over, the front air bags are
generally not deployed.
Your vehicle has adaptive, two-stage front air
bags. The air bag control unit evaluates
vehicle deceleration or acceleration in the
event of a collision. In the first deployment
stage, the front air bag is filled with part of the
total available propellant gas, thereby
reducing the risk of injury. If the air bag
control unit recognizes within a few
milliseconds that the vehicle is being braked
or accelerated faster than originally
predicted, the front air bag is filled with the
maximum amount of propellant gas available.
The deployment of the front-passenger front
air bag is also influenced by the weight
category of the front passenger, which is
determined by the Occupant Classification
System (OCS) (Ypage 45).
The lighter the passenger-side occupant, the
higher the vehicle deceleration rate required
(predicted at the start of the impact) for
second stage inflation of the front-passenger
front air bag. In the second stage, the front
air bags are inflated with the maximum
amount of propellant gas available.
The front air bags are not deployed in
situations where a low impact severity is
predicted. You will then be protected by the
fastened seat belt.
The front-passenger front air bag will only
deploy if:
Rthe system, based on the OCS weight
sensor readings, detects that the front-
passenger seat is occupied
Rthe PASSENGER AIR BAG OFF indicator
lamp on the center console is not lit
(Ypage 45)
Rthe air bag control unit predicts a high
impact severity
Knee bags
Occupant safety43
Safety
Z

Driver's knee bagdeploys underneath the
steering column and front-passenger knee
bagunderneath the glove box. They
deploy together with the front airbags. They
are designed to operate together with the
front air bags in frontal impacts if certain
thresholds are exceeded. The knee bags
operate at best in conjunction with correctly
positioned and fastened seat belts.
Knee bags provide increased protection for
the driver and frontpassenger against the risk
of:
Rknee injuries
Rthigh injuries
Rlower leg injuries
Side impact air bags
GWARNING
Using unsuitable seat coverscould restrictor
even preventdeployment of the air bags
integrated into the seats. Consequently, the
air bags cannot protectvehicle occupants as
they are designed to do. In addition, the
function of the air bag deactivation system
could be restricted. This poses an increased
risk of injury or even fatal injury.
You should only use seat covers that have
been approved for the respective seat by
Mercedes-Benz.
GWARNING
Sensors to control the air bags are located in
the doors. Modifications or work not
performed correctly to the doors or door
paneling, as well as damaged doors, can lead
to the function of the sensors being impaired.
The air bags might therefore not function
properly any more. Consequently, the air bags
cannot protectvehicle occupants as they are
designed to do. There is an increased risk of
injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door
paneling carried out at a qualified specialist
workshop.
You should only use seat covers that have
been approved for your vehicle by Mercedes-
Benz.The seat covers must have a special
tear seam for side impact air bags. Otherwise,
the side impact air bags cannot deploy
correctly and therefore cannot provide the
intended protection in the event of an
accident.
Front side impact air bagsand rear side
impact air bagsdeploy next to the outer
seat cushions.
When deployed, the side impact air bags offer
additional protection of the thorax for
occupants on the front seats as well as also
of the pelvis for the vehicle occupants on the
side of the vehicle on which the impact
occurs. However, they do not protect the:
Rhead
Rneck
Rarms
The side impact air bags are deployed:
Ron the side on which an impact occurs
Rat the start of an accident with a high rate
of lateral vehicle deceleration or
acceleration, e.g. inaside impact
Rindependently of the use of the seat belt
Rindependently of the front air bags
Rindependently of the ETDs
If the vehicle rolls over, the side impactair
bags are generally not deployed. Side impact
air bags are deployed if the system detects
high vehicle deceleration or acceleration in a
lateral direction and determines that side
impactair bag deploymentcan offer
44Occupant safety
Safety

additional protection to that provided by the
seat belt.
Side impactair bags will not deploy in side
impacts which do not exceed the system's
presetdeployment thresholds for lateral
acceleration/deceleration.You will then be
protected by the fastened seat belt.
The side impact air bag on the front-
passenger side is not deployed in the
following situations:
ROCS has detected that the front-passenger
seat is unoccupied.
Rthe front-passenger seat belt is not
fastened.
The side impact air bag on the front-
passenger side will deploy if the front-
passenger seat belt is fastened, regardless of
whether the front-passenger seat is occupied
or not.
Window curtain air bags
Window curtain air bagsenhance the level
of protection for the head, but not chest or
arms, of the vehicle occupants on the side of
the vehicle on which the impact occurs.
Window curtain air bagsare integrated
into the side of the roof frame and deployed
in the area from the A-pillar to the C-pillar.
Window curtain air bags are deployed:
Rat the start of an accident with a high rate
of lateral vehicle deceleration or
acceleration, e.g. inaside impact
Ron the side on which an impactoccurs
Ron the driver's side and passenger side, in
the event of a vehicle rollover and if the
system determines that airbag deployment
can offer the vehicle occupants additional
protection to that provided by the seat belt
Rindependently of the use of the seat belt
Rregardless of whether the front-passenger
seat is occupied
Rindependently of the frontair bags
Window curtain air bagswill not deploy in
the eventofimpacts which do not exceed the
system's presetdeployment thresholds for
vehicle acceleration/deceleration.You will
then be protected by the fastened seat belt.
Occupant Classification System
(OCS)
Method of operation
GWARNING
If theindicator lamp illuminates
when an adult or someone larger than a small
individual is in the front-passenger seat, have
the front passenger reposition himself or
herself in the seat until the
indicator lamp goes out.
In the event of a collision, the air bag control
unit will not allow front-passenger front air
bag deployment when the OCS has classified
the front-passenger seat occupant as
weighing as much as or less than a typical 12-
month-old child in a standard child restraint
or if the front-passenger seat is classified as
being empty.
When the OCS senses that the front-
passenger seat occupant is classified as
being up to or less than the weight of a typical
12-month-old child in a standard child
restraint, theindicator lamp will
illuminate when the engine is started and
remain illuminated, indicating that the front-
passenger front air bag is deactivated.
When the OCS senses that the front-
passenger seat is classified as being empty,
Occupant safety45
Safety
Z

Display messagesPossible causes/consequences and
Solutions

Front Left
Malfunction
Service Required
orFront Right
Malfunction
Service Required
SRS has malfunctioned at the front on the left or right. The
warning lamp also lights up in the instrumentcluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop.

Rear Left
Malfunction
Service Required
orRear Right
Malfunction
Service Required
SRS has malfunctionedat the rear on the left or right. The
warning lamp also lights up in the instrument cluster.
GWARNING
The airbags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased riskofinjury.
XVisitaqualified specialist workshop.

Left Side Curtain
AirbagMalfunction
Service Required
orRight Side
Curtain Airbag
Malfunction
Service Required
There is a malfunction in the left-hand or right-hand window
curtain air bag. Thewarning lamp also lights up in the
instrument cluster.
GWARNING
The left or right window curtain air bag may either be triggered
unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop.
220Display messages
On-board computer and displays