key MERCEDES-BENZ CLA 2014 User Guide

in a rear-facing child restraint on the rear
seat.
RIf you install a rear-facing child restraint on
the front-passengerseat, make sure the
indicator lamp is illuminated,
indicating that the front-passenger frontair
bag is deactivated. Should the
indicator lamp not illuminate or go out while
the restraint is installed, please check
installation.Periodically check the
indicator lamp while driving to
make sure that theindicator
lamp is illuminated. If the
indicator lamp goes out or remains out, do
not transport a child on the front-passenger
seat until the system has been repaired.
Achild in a rear-facing child restraint on the
front-passenger seat will be seriously
injured or even killed if the front-passenger
front air bag inflates.
RIf you place a child in a forward-facing child
restraint on the front-passenger seat:
-move the seat as far back as possible
-use the proper child restraint
recommended for the age, size and
weight of the child
-secure child restraint with the vehicle's
seat belt according to the child seat
manufacturer's instructions
RFor children larger than the typical 12-
month-old child, the front-passenger front
air bag may or may not be activated.
GWARNING
If the redSRS warning lamp in the
instrument cluster and the
indicator lamp light up simultaneously, the
OCS is malfunctioning. The front passenger
front air bag will be deactivated in this case.
Have the system checked by qualified
technicians as soon as possible. Contact an
authorized Mercedes-BenzCenter.
Only have the seat repaired or replaced at an
authorized Mercedes-Benz Center.
In order to ensure proper operation of the air
bag system and OCS:
RSit with the seat belt properly fastened in a
position that is as upright as possible with
your back against the seat backrest.
RWhen seated, a passenger should not
position him/herself in such a way as to
cause the passenger's weight to be lifted
from the seat cushion as this may result in
the OCS being unable to correctly
approximate the passenger's weight
category.
RRead and observe all warnings in this
chapter.
If the SmartKey has been removed from the
ignition lock or is in position0,
indicator lampdoes not light
up.
The Occupant Classification System (OCS)
categorizes the occupant on the front-
passenger seat using a weight sensor.The
front-passenger front air bag is deactivated
automatically for certain weight categories.
indicator lampshows you the
current status. Ifindicator
lampis lit, the front-passenger front air
bag is disabled.
The system does not deactivate:
Rthe side impact air bag
Rthe window curtain air bag
Rthe Emergency Tensioning Devices
Occupant safety47
Safety
Z

To be classified correctly, the frontpassenger
must sit:
Rwith the seat belt fastened correctly
Rin a positionthat is as upright as possible
with their back against the seat backrest
Rwith their feet on the floor
The OCS weight sensor reading is affected if
the occupant's weight is transferred, e.g. by
leaning on the armrest.
If the front-passenger seat, the seat cover or
the seat cushion are damaged, have the
necessary repair work carried out at a
qualified specialist workshop.
For safety reasons, Mercedes-Benz
recommends that you only use seat
accessories that have been approved by
Mercedes-Benz.
Both the driver and the front passenger
should always observe the
indicator lamp to determine whether or not
the front passenger is positioned correctly.
Observe also the air bag display messages
that can be displayed in the instrument
cluster (Ypage 222).
If the driver's air bag deploys, this does not
mean that the front-passenger front air bag
will also deploy.
The OCS may have detected that the seat:
Ris empty or occupied by the weight of a
typical child up to twelve months old,
seated in a child restraint system
Ris occupied by a small individual, such as a
young teenager or a small adult
Ris occupied by a child in a child restraint
system whose weight is greater than that
of a typical twelve month old child.
These are examples of when the OCS
deactivates the front-passenger front air bag.
Deactivation takes place although the
collision fulfills the criteria for deploying the
driver's air bag.
System self-test
GWARNING
If theindicator lamp does not
illuminate, the system is not functioning. You
must contact an authorized Mercedes-Benz
Center before seating any child on the front
passenger seat.
GWARNING
Never place anything betweenseat cushion
and child seat (e.g. a pillow), since it reduces
the effectiveness of the OCS. The underside
and rear side child restraint system must be
placed entirely on the seat cushion and the
backrest of the front-passenger seat
backrest.
If necessary, adjust the tilt of the passenger
seat backrest.
An incorrectly mounted child seat could cause
injuries to the child in case of an accident,
instead of increasing protection for the child.
Follow the manufacturer's instructions for
installation of child restraint systems.
If you turn the SmartKey to position1or2in
the ignition lock, theindicator
lamp illuminates.
If an adult occupant is sitting properly on the
front-passenger seat and the OCS classifies
the occupant as an adult, the
indicator lamp illuminates and goes out again
after approximately six seconds.
If the seat is not occupied and the OCS
classifies the frontpassenger seat as being
unoccupied, theindicator lamp
will illuminate and notgo out.
For more information, see "Problems with the
Occupant Classification System"
(Ypage 49).
48Occupant safety
Safety

Adjust the seatbelt so that the shoulder
section is located as close as possible to
the middle of the shoulder. It should not
touch the neck.Never pass the shoulder
portion of the seat belt under your arm. For
this purpose, you can adjust the height of
the seat belt outlet.
RPosition the lap belt as low as possible on
your hips and not across the abdomen. If
the lap belt is positioned across your
abdomen, it could cause serious injuries in
a crash.
RNever wear seat belts over rigid or
breakable objects in or on your clothing,
such as eyeglasses, pens, keys etc., as
these might cause injuries.
RMake sure the seat belt is always fitted
snugly. Take special care of this when
wearing loose clothing.
RNever use a seat belt for more than one
person at a time. Do not fasten a seat belt
around a person and another person or
other objects at the same time.
RSeat belts should not be worn twisted. In a
crash, you would not have the full width of
the seat belt to distributeimpact forces.
The twisted seat belt against yourbody
could cause injuries.
RPregnant women should also always use a
lap-shoulder belt. The lap belt portion
should be positioned as low as possible on
the hips to avoid any possible pressure on
the abdomen.
RPlace the seat backrest in a position that is
as upright as possible.
RCheck your seat belt during travel to make
sure it is properly positioned.
RNever place your feet on the instrument
panel, dashboard, or on the seat. Always
keep both feet on the floor in front of the
seat.
RWhen using a seat belt to secure infant
restraints, toddler restraints, or children in
booster seats, always follow the child seat
manufacturer's instructions.
GWARNING
Do not pass seat belts over sharp edges. They
could tear.
Do not allow the seat belt to get caught in the
door or in the seat adjustment mechanism.
This could damage the seat belt.
Never attempt to make modifications to seat
belts. This could impair the effectiveness of
the seat belts.
Fastening seat belts
GWARNING
According to accident statistics, children are
safer when properly restrained on the rear
seats than on the front-passenger seat. Thus,
we strongly recommend that children be
placed in the rear seat whenever possible.
Regardless of seating position, children 12
years old and under must be seated and
properly secured in an appropriately sized
child restraint system or booster seat
recommended for the size and weight of the
child. For additional information, see the
"Children in the vehicle" section.
Achild's risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
or the child is not properly secured in the child
restraint.
Occupant safety51
Safety
Z

Children that are too large for a child restraint
must travel in seats usingnormal seat belts.
Position the shoulder belt across the chest
and shoulder, not the face or neck.Abooster
seat may be necessary to achieve proper seat
belt positioning for children over 41 lbs
(18 kg) until they reach a height wherealap/
shoulder belt fits properly without a booster
seat.
When the child restraint is notinuse, remove
it from the vehicle or secure it with the seat
belt to prevent the child restraint from
becoming a projectile in the event of an
accident.
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park positionP
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
GWARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot.
Children may burn themselves on these parts,
particularly on the metal parts of the child
restraint system. There is a risk of injury.
If you leave the vehicle, taking the child with
you, always ensure that the child restraint
system is not exposed to direct sunlight.
Protect it with a blanket, for example. If the
child restraint system has been exposed to
direct sunlight, let it cool down before
securing the child in it. Never leave children
unattended in the vehicle.
If an infant or child is traveling in the vehicle:
RSecure the child with a child or infant seat
restraint system appropriate to the age and
weight of the child.
RMake sure that the infant or child is
properly secured at all times while the
vehicle is in motion.
Mercedes-Benz recommends that you always
properly secure all infants and children with
a child or infant seat restraint system for the
trip.
The use of seat belts and infant and child
restraint systems is required by law in:
Rall 50 states
Rthe U.S. territories
Rthe District of Columbia
Rall Canadian provinces
Infants and children must always be seated in
an appropriate infant or child restraint system
recommended for the size and weight of the
child. The infant or child restraint system
must be properly secured in accordance with
the manufacturer's instructions.
All infant or child restraint systems must meet
the following standards:
RU.S. Federal Motor Vehicle Safety
Standards 213 and 225
RCanadian Motor Vehicle Safety Standards
213 and 210.2
Confirmation that the child restraint system
corresponds to the standards can be found
on an instruction label on the child restraint
system. This confirmation can also be found
56Children in the vehicle
Safety

Child-proof locks
Important safety notes
GWARNING
If childrenare left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park positionP
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
GWARNING
If children are traveling in the vehicle, they
could:
Ropen doors, thus endangering other people
or road users
Rexit the vehicle and be caught by oncoming
traffic
Roperate vehicle equipment and become
trapped
There is a risk of an accident and injury.
Always activate the child-proof locks and
override feature if children are traveling in the
vehicle. When leaving the vehicle, always take
the key with you and lock the vehicle. Never
leave children unattended in the vehicle.
You can activate the following child-proof
locks:
Rrear doors (Ypage 60)
Rrear side windows (Ypage 61)
Child-proof locks for the rear doors
GWARNING
Children could open a rear door from inside
the vehicle. This could resultinserious
injuries or an accident. Therefore, when
children ride in the rear always secure the rear
doors with the child-proof locks.
You secure each door individually with the
child-proof locks on the rear doors.Adoor
secured with a child-proof lock cannot be
opened from inside the vehicle. When the
vehicle is unlocked, the door can be opened
from the outside.
XTo activate:press the child-proof lock
lever up in the direction of arrow.
XMake sure that the child-proof locks are
working properly.
XTo deactivate:press the child-proof lock
lever down in the direction of arrow.
60Children in the vehicle
Safety

Theft deterrent locking system
Immobilizer
The immobilizerprevents yourvehicle from
being started without the correct SmartKey.
XTo activate:remove the SmartKey from
the ignition lock.
XTo deactivate:switch on the ignition.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
SmartKey that is left inside the vehicle.
iThe immobilizer is always deactivated
when you start the engine.
In the event that the engine cannot be
started when the starter battery is fully
charged, the immobilizer may be faulty.
Contactanauthorized Mercedes-Benz
Centerorcall 1-800-FOR-MERCedes (in the
USA) or 1-800-387-0100 (in Canada).
ATA (anti-theft alarm system)
XTo arm:lockthe vehicle with the
SmartKey.
Indicator lampflashes. The alarm
system is armed after approximately
15 seconds.
XTo disarm:unlock the vehicle with the
SmartKey.
or
XInsert the SmartKey into the ignition lock.
Avisual and audible alarm is triggered if the
alarm system is armed and you open:
Rthe vehicle with the mechanical key
Ra door
Rthe trunk lid
Rthe hood
XTo stop the alarm:insert the SmartKey
into the ignition lock.
The alarm is switched off.
or
XPress theor\nbutton on the
SmartKey.
The alarm is switched off.
The alarm is not switched off, even if you
close the open door that triggered it, for
example.
iIf the alarm stays on for more than
30 seconds, the mbraceemergency call
system automatically sendsamessage to
the Customer Assistance Center by text
message or data connection.The
emergency call system sends the message
provided that:
Ryou have subscribed to the mbrace
service.
Rthe mbrace service has been activated
properly.
Rthe necessary mobile phone network is
available.
70Theft deterrent locking system
Safety

Useful information..............................72
SmartKey.............................................72
Doors....................................................77
Trunk....................................................80
Side windows......................................82
Panorama roof with power tilt/
sliding panel........................................85
71
Opening and closing

Useful information
iThis Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
iRead the information on qualified
specialist workshops: (Ypage 25).
SmartKey
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park positionP
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
GWARNING
If you attach heavy or large objects to the
SmartKey, the SmartKey could be
unintentionally turned in the ignition lock.This
could cause the engine to be switched off.
There is a risk of an accident.
Do not attach any heavy or large objects to
the SmartKey. Remove any bulky key rings
before inserting the SmartKey into the
ignition lock.
!Keep the SmartKey away from strong
magnetic fields. Otherwise, the remote
control function could be affected.
Strong magnetic fields can occur in the
vicinity of powerful electrical installations.
Do not keep the SmartKey:
Rwith electronic devices, e.g. a mobile
phone or another SmartKey
Rwith metallic objects, e.g. coins or metal
foil
Rinside metallic objects, e.g. a metal case
SmartKey functions
\nTo lock the vehicle
To open the trunk lid
"To unlock the vehicle
XTo unlock centrally:press button".
72SmartKey
Opening and closing

If you do not open the vehicle within
approximately 40 seconds of unlocking:
Rthe vehicle is locked again.
Rthe theft deterrent locking system is armed
again.
XTo lockcentrally:press button.
The SmartKey centrally locks/unlocks:
Rthe doors
Rthe trunk lid
Rthe fuel filler flap
The turnsignals flash oncewhen unlocking
and three times when locking.
iWhen it is dark, the surround lighting also
comes on if it is activated in the on-board
computer (Ypage 207).
iYou can also set an audible signal to
confirm that the vehicle has been locked.
The audible signal can be activated and
deactivated using the on-board computer
(Ypage 208).
XTo open the trunk lid automatically:
press and hold buttonuntil the trunk lid
opens (Ypage 81).
Changing the settings of the locking
system
You can change the settings of the locking
system. When you then unlock the vehicle
only the driver's door and the fuel filler flap
are unlocked. This is useful if you frequently
travel on your own.
XTo change the setting:press and hold
down theand\nbuttons
simultaneously for approximately six
seconds until the battery check lamp
(Ypage 74) flashes twice.
iIf the setting of the locking system is
changed within the signal range of the
vehicle, pressing the\norbutton:
Rlocks or
Runlocks the vehicle
The SmartKey now functions as follows:
XTo unlock the driver's door:press the
button once.
XTo unlock centrally:press the
button twice.
XTo lock centrally:press the\nbutton.
XTo restore the factory settings:press
and hold down theand\nbuttons
simultaneously for approximately six
seconds until the battery check lamp
flashes twice (Ypage 74).
Mechanical key
General notes
If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered (Ypage 70).
There are several ways to turn off the alarm:
XPress theor\nbutton on the
SmartKey.
or
XInsert the SmartKey into the ignition lock.
If you unlock the vehicle using the mechanical
key, the fuel filler flap will not be unlocked
automatically.
XTo unlock the fuel filler flap:insert the
SmartKey into the ignition lock.
Removing the mechanical key
SmartKey73
Opening and closing
Z

XPush release catchin the direction of
the arrow and at the same time remove
mechanical keyfrom the SmartKey.
For further information about:
Runlocking the driver's door (Ypage 79)
Runlocking the trunk (Ypage 82)
Rlocking the vehicle (Ypage 79)
SmartKey battery
Important safety notes
GWARNING
Batteries contain toxic and corrosive
substances. If batteries are swallowed, it can
result in severe health problems. There is a
risk of fatal injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National
guidelines must be observed during disposal.
In California, seewww.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm.
Mercedes-Benz recommends that you have
the batteries replaced at a qualified specialist
workshop.
Checking the battery
XPress the\norbutton.
The battery is working properly if battery
check lamplights up briefly.
The battery is discharged if battery check
lampdoes not light up briefly.
XChange the battery (Ypage 74).
iIf the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the\norbutton:
Rlocks or
Runlocks the vehicle
iYou can get a battery at any qualified
specialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
XTake the mechanical key out of the
SmartKey (Ypage 73).
XPress mechanical keyinto the opening
in the SmartKey in the direction of the
arrow until battery tray coveropens.
When doing so, do not hold covershut.
XRemove battery tray cover.
74SmartKey
Opening and closing