2014 MERCEDES-BENZ CLA light

ringsfor two LATCH-type (ISOFIX) child
restraint systems are installed on the left and
right of the rear seats.
Non-LATCH-type (ISOFIX) child seats may
also be used and can be installed using the
vehicle's seat beltsystem. Install the child
seat according to the manufacturer's
instructions.
Top Tether
Important safety notes
GWARNING
Always engage the rearseat backrests in an
upright position before installing the Top
Tether belt. Push and pull the rear seat
backrests to check whether they are engaged
correctly. If the seat backrest is not locked
properly, the seat backrest could fold. The
child seat would no longer be supported
properly or positioned to provide its intended
benefit.That could cause serious or even fatal
injuries.
Example: Top Tether belt with one belt strap
Top Tether provides an additional connection
between the LATCH-type (ISOFIX) child
restraint system secured with ISOFIX and the
rear seat. This helps reduce the risk of injury
even further. If the child restraint system is
installed with Top Tether, this should always
be used.
The Top Tether anchorage points are installed
in the rear compartment behind the outer
head restraints on the parcel shelf.
There is also another Top Tether anchorage
point behind the central rear seat.
XPress down the rear of coverin the
direction of the arrow.
Coveris raised slightly at the front.
XFold up coverof Top Tether anchorage
".
XTop Tether belt with one belt strap:route
Top Tether beltcentrally over head
restraint.
XTop Tether belt with two belt straps:
route Top Tether beltson the left and
right past the side of head restraint.
XHook Top Tether hook!into Top Tether
anchorage".
XMake sure that Top Tether beltis not
twisted.
XInstall the LATCH-type (ISOFIX) child
restraint system with Top Tether. Always
comply with the child restraint system
manufacturer's installation instructions
when doing so. Make sure that Top Tether
beltis tight.
Children in the vehicle59
Safety
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Override feature for the rear side
windows
GWARNING
When children ride on the vehicle's rear seats,
activate the override switch. Otherwise, the
children could be injured, e.g. by trapping
themselves in the rear side window.
XTo activate/deactivate:press button.
If indicator lampis lit, operation of the
rear side windows is disabled. Operation is
only possible using the switches in the
driver's door. If indicator lampis off,
operation is possible using the switches in
the rear compartment.
Driving safetysystems
Overview of driving safety systems
In this section, you will find information about
the following driving safety systems:
RABS (Anti-lockBrakingSystem)
(Ypage 61)
RBAS (BrakeAssistSystem) (Ypage 62)
RCOLLISION PREVENTION ASSIST (distance
warning function and adaptive Brake
Assist) (Ypage 62)
RESP®(ElectronicStabilityProgram)
(Ypage 65)
REBD (ElectronicBrake forceDistribution)
(Ypage 69)
RADAPTIVE BRAKE (Ypage 69)
RSTEER CONTROL (Ypage 69)
Important safety notes
If you fail to adapt yourdriving style or
become distracted, the driving safety
systems can neither reduce the risk of
accident nor override the laws of physics.
Driving safety systems are merely aids
designed to assist driving. You are
responsible for the distance to the vehicle in
front, for vehicle speed and for braking in
good time. Always adapt yourdriving style to
suitthe prevailing road, weather and traffic
conditions and maintainasafe distance from
the vehicle in front. Drive carefully.
iThe driving safety systems described only
work as effectively as possible when there
is adequate contact between the tires and
the road surface. Pay particular attention
to the informationregarding tires,
recommended minimum tire tread depths
etc.inthe "Wheels and tires" section
(Ypage 312).
In wintry driving conditions, always use
winter tires (M+S tires) and if necessary,
snow chains. Only in this way will the
driving safety systems described in this
section work as effectively as possible.
ABS (Anti-lockBraking System)
General information
ABS regulates brake pressure in such a way
thatthe wheels do not lock when you brake.
This allows you to continue steering the
vehicle when braking.
TheABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
Important safety notes
iObserve the "Important safety notes"
section for driving safety systems
(Ypage 61).
Driving safety systems61
Safety
Z

Always pay careful attention to the traffic
situationand be ready to brake.
The distance warning functioncannot always
clearly identify objects and complextraffic
situations.
In such cases, the distance warning function
may:
Rgive an unnecessary warning
Rnot give a warning
Always pay careful attention to the traffic
situation and do not rely solely on the
distance warning function.
Function
XTo activate/deactivate:activate or
deactivate the distance warning function in
the on-board computer (Ypage 204).
If the distance warning function is not
activated, the
symbol appears in the
assistance graphics display.
The distance warning function can help you
to minimize the risk of a front-end collision
with a vehicle ahead or reduce the effects of
such a collision. If the distance warning
function detects that there is a risk of a
collision, you will be warned visually and
acoustically.Without your intervention, the
distance warning function cannot prevent a
collision.
Starting at a speed of around 4 mph
(7 km/h) the distancewarning function warns
you if you rapidly approach a vehicle in front.
An intermittentwarning tone will then sound,
and thedistance warning lamp will light
up in the instrument cluster.
XBrake immediately in order to increase the
distance from the vehicle in front.
or
XTake evasive action provideditis safe to do
so.
For the distance warning function to assist
you when driving, the function must be
activated in the on-board computer and be
operational (Ypage 204).
Due to the nature of the system, particularly
complicated but non-critical driving
conditions may also cause the system to
display a warning.
With the help of the radar sensor system, the
distance warning function can detect
obstacles that are in the path of your vehicle
for an extended period of time.
From a speed of around 40 mph (70 km/h),
the distance warning function can also react
to stationary obstacles, such as stopped or
parked vehicles.
If you approach an obstacle and the distance
warning function detects a risk of a collision,
the system will initially alert you both visually
and acoustically.
In particular, the detection of obstacles can
be impaired if:
Rdirt on the sensors or anything else
covering the sensors
Rsnow or heavy rain
Rinterference by other radar sources
Rthere are strong radar reflections, for
example in parking garages
Ra narrow vehicle traveling in front, e.g. a
motorbike
Ra vehicle traveling in front on a different line
relative to the center of your vehicle
Following damage to the front end of the
vehicle, have the configuration and operation
of the radar sensor checked at a qualified
specialist workshop. This also applies to
collisions at low speeds where there is no
visible damage to the front of the vehicle.
Adaptive Brake Assist
iObserve the "Important safety notes"
section for driving safety systems
(Ypage 61).
GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic
situations. In these cases, Adaptive Brake
Driving safety systems63
Safety
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!When testing the electric parking brake
on a braking dynamometer, switch off the
ignition. Application of the brakes by
ESP®may otherwise destroy the brake
system.
!Vehicles with 4MATIC: switch off the
ignition when the electric parking brake is
being tested on a brake dynamometer.
Application of the brakes by ESP®may
otherwise destroy the brake system.
!Vehicles with 4MATIC: function or
performance tests may only be carried out
on a 2-axle dynamometer. Before you
operate the vehicle on such a
dynamometer, please consult a qualified
workshop. You could otherwise damage
the drive train or the brake system.
!Do not tow vehicles with 4MATIC with the
front or rear axle raised.
Vehicles without 4MATIC: when towing your
vehicle with the front axle raised, it is
important that you observe the notes on
ESP®(Ypage 307).
Vehicles with 4MATIC: when towing your
vehicle with both axles on the ground, it is
important that you observe the notes on
ESP®(Ypage 307).
ESP®is deactivated if theESP®OFF
warning lamp in the instrument cluster lights
up continuously when the engine is running.
If theESP®warning lamp and the
ESP®OFF warning lamp are lit
continuously, ESP®is not available due to a
malfunction.
Observe the information on warning lamps
(Ypage 244) and displaymessages which
may be shown in the instrument cluster
(Ypage 213).
iOnly use wheels with the recommended
tire sizes. Only then will ESP®function
properly.
Characteristics of ESP®
General information
If theESP warning lamp goes out before
beginning the journey, ESP®is automatically
active.
If ESP®intervenes, theESP®warning
lamp flashes in the instrument cluster.
If ESP®intervenes:
XDo not deactivate ESP®under any
circumstances.
XOnly depress the accelerator pedal as far
as necessary when pulling away.
XAdapt your driving style to suit the
prevailing road and weather conditions.
ECO start/stop function
The ECO start/stop function switches the
engine off automatically when the vehicle
stops moving. The engine starts
automatically when the driver wants to pull
away again. ESP®remains in its previously
selected status.Example:if ESP®was
deactivated before the enginewas switched
off, ESP®remains deactivated when the
engine is switched on again.
Deactivating/activating ESP®(AMG
vehicles)
Important safety notes
iObserve the "Important safety notes"
section(Ypage 61).
You can select between the following states
of ESP®:
RESP®is activated.
RSPORT handling mode is activated.
RESP®is deactivated.
GWARNING
When SPORT handling mode is activated,
there is a greater risk of skidding and
accidents.
66Driving safetysystems
Safety

Only activate SPORT handling mode in the
situations described in the following.
GWARNING
If you deactivate ESP®, ESP®no longer
stabilizes the vehicle. There is an increased
risk of skidding and an accident.
Only deactivate ESP®in the situations
described in the following.
In the following situations, it may be better to
activate SPORT handling mode or deactivate
ESP®:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
Ron designated roads when the vehicle's
own oversteering and understeering
characteristics are desired
Driving in SPORT handling mode or without
ESP®requires an extremely qualified and
experienced driver.
iActivate ESP®as soon as the situations
described above no longer apply. ESP®will
otherwise not be able to stabilize the
vehicle if the vehicle starts to skid or a
wheel starts to spin.
!Avoid spinning the driven wheels for an
extended period with ESP®deactivated.
You could otherwise damage the drivetrain.
Deactivating/activating ESP®
XTo activate SPORT handling mode:
briefly press button.
TheSPORT handling mode warning
lamp in the instrument cluster lights up.
TheSPORT handling modemessage
appears in the multifunction display.
XTo deactivate SPORT handling mode:
briefly press button.
TheSPORT handling mode warning
lamp in the instrument cluster goes out.
XTo deactivate ESP®:press buttonuntil
theESP®OFF warning lamp lights up
in the instrument cluster.
TheOFFmessage appears in the
multifunction display.
XTo activate ESP®:briefly press button.
TheESP®OFF warning lamp in the
instrument cluster goes out. The
ESP®ONmessage appears in the
multifunction display.
Characteristics of activated SPORT
handling mode
If SPORT handling mode is activated and one
or more wheels start to spin, theESP®
warning lamp in the instrument cluster
flashes. ESP®only stabilizes the vehicle to a
limited degree.
When SPORT handling mode is activated:
RESP®only improves driving stability to a
limited degree.
Rtraction control is still activated.
Rengine torque is only restricted to a limited
degree, and the drive wheels are able to
spin.
The spinning of the wheels results in a
cutting action for better traction on loose
surfaces.
RESP®still provides support when you
brake.
Driving safety systems67
Safety
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Characteristics when ESP®is deactivated
If ESP®is deactivated and one or more wheels
start to spin, theESP®warning lamp in
the instrumentcluster does not flash. In such
situations, ESP®will not stabilize the vehicle.
If you deactivate ESP®:
RESP®no longer improves driving stability.
Rengine torque is no longer limited and the
drive wheels are able to spin.
The spinning of the wheels results in a
cutting action for better traction on loose
surfaces.
Rtraction control is still activated.
RPRE-SAFE®is no longer available, nor is it
activated if you brake firmly and ESP®
intervenes.
RCOLLISION PREVENTION ASSISTis no
longer available; nor is it activated if you
brake firmly with assistance from ESP®.
RCOLLISION PREVENTION ASSIST is no
longer available; nor is it activated if you
brake firmly with assistance from ESP®.
RESP®still provides support when you
brake.
Deactivating/activating ESP®(except
AMG vehicles)
Important safety notes
You can select between the following states
of ESP®:
RESP®is activated.
RESP®is deactivated.
GWARNING
If you deactivate ESP®, ESP®no longer
stabilizes the vehicle. There is an increased
risk of skidding and an accident.
Only deactivate ESP®in the situations
described in the following.
It may be best to deactivate ESP®in the
following situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
iActivate ESP®as soon as the situations
described above no longer apply.ESP®will
otherwise not be able to stabilize the
vehicle if the vehicle starts to skid or a
wheel starts to spin.
!Avoid spinning the driven wheels for an
extended period with ESP®deactivated.
You could otherwise damage the drivetrain.
Deactivating/activating ESP®
You can deactivate or activate ESP®via the
on-board computer.
XTo deactivate:(Ypage 203).
TheESP®OFF warning lamp in the
instrument cluster lights up.
XTo activate:(Ypage 203).
TheESP®OFF warning lamp in the
instrument cluster goes out.
Characteristics when ESP®is deactivated
If ESP®is deactivated and one or more wheels
startto spin, theESP®warning lamp in
the instrument cluster flashes. In such
situations, ESP®will not stabilize the vehicle.
If you deactivate ESP®:
RESP®no longer improves driving stability.
Rengine torque is no longer limited and the
drive wheels are able to spin.
The spinning of the wheels results in a
cutting action for better traction on loose
surfaces.
Rtraction control is still activated.
RESP®still provides support when you
brake.
68Driving safety systems
Safety

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