0043
Securing ring
X Install the LATCH-type (ISOFIX) child
restraint system. Comply with the
manufacturer's instructions when
installing the LATCH-type (ISOFIX) child
restraint system.
X When an LATCH-type (ISOFIX) child
restraint system is installed, make sure
that the center seat belt in the rear
compartment is fully functional and can
move freely.
Top Tether G
WARNING
Observe "Important safety notes"
(Y page 54). G
WARNING
Always engage the rear seat 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. G
WARNING
Only use the described top tether anchorage
rings for the respective child seat. Other
lashing eyelets could tear in case of an
accident. Make sure the top tether straps are not crossed or twisted and the hook is
attached and closed properly.
Top Tether provides an additional connection
between a child restraint system, secured
with a LATCH-type (ISOFIX) child seat mount,
and the rear seat. This helps reduce the risk
of injury even further. X
Remove cargo compartment cover
(Y page 261).
X Move the head restraint upwards.
X Install the LATCH-type (ISOFIX) child
restraint system with Top Tether. Comply
with the manufacturer's installation
instructions when doing so.
X Route Top Tether belt 0087under the head
restraint between the two head restraint
bars.
X Attach Top Tether hook 0043to Top Tether
anchorage 0044on the cargo compartment
floor.
X Hook Top Tether hook 0043of Top Tether belt
0087 into Top Tether anchorage 0044.58
Children in the vehicleSafety
Make sure that:
R
Top Tether hook 0043is hooked into Top
Tether anchorage 0044as shown.
R Top Tether belt 0087is not twisted.
X Make sure that Top Tether belt 0087is not
twisted.
X Tension Top Tether belt 0087. Comply with
the manufacturer's installation
instructions when doing so.
X Move head restraint back down again
slightly if necessary (Y page 86). Make
sure that you do not interfere with the
correct routing of Top Tether belt 0087.Child-proof locks
Important safety notes G
WARNING
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. G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unattended in the
vehicle, even if they are secured in a child
restraint system, or with access to an
unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. The children
could:
R injure themselves on parts of the vehicle
R be seriously or fatally injured through
excessive exposure to extreme heat or cold
R injure themselves or cause an accident with
vehicle equipment that can be operated
even if the SmartKey is removed from the
ignition lock or removed from the vehicle,
such as seat adjustment, steering wheel
adjustment, or the memory function If children open a door, they could injure other
persons or get out of the vehicle and injure
themselves or be injured by following traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and the child could be burned on these
parts.
Child-proof locks for the rear doors G
WARNING
Children could open a rear door from inside
the vehicle. This could result in serious
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. A door
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. X
To activate: press the child-proof lock
lever down in the direction of arrow 0044.
X Make sure that the child-proof locks are
working properly.
X To deactivate: press the child-proof lock
lever up in the direction of arrow 0043. Children in the vehicle
59Safety Z
Override feature for the rear side
windows
G
WARNING
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. X
To activate/deactivate: press button0043.
If indicator lamp 0044is lit, operation of the
rear side windows is disabled. Operation is
only possible using the switches in the
driver's door. If indicator lamp 0044is off,
operation is possible using the switches in
the rear compartment. Driving safety systems
Overview of driving safety systems
In this section, you will find information about
the following driving safety systems:
R ABS (Anti-lock BrakingSystem)
(Y page 61)
R BAS (Brake AssistSystem) (Y page 61)
R Adaptive brake lights (Y page 62)
R ESP ®
(Electronic StabilityProgram)
(Y page 62)
R EBD ( Electronic Brake force Distribution)
(Y page 64)
R ADAPTIVE BRAKE (Y page 64)
R Trailer stabilization Important safety notes
G
WARNING
The ABS, the BAS, and the ESP ®
switch off
when the differential locks are switched on.
When the ABS, the BAS, and the ESP ®
are
switched off
R wheels may lock during hard braking
R steering capabilities are reduced
R braking distance is increased
R vehicle stability in standard driving
maneuvers is increased
Make sure the differential locks are switched
on at all times except when driving off-road
for example. Switch on the differential locks
immediately when returning from off-road
driving.
If you fail to adapt your driving 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 your driving style to
suit the prevailing road and weather
conditions and maintain a safe distance from
the vehicle in front. Drive carefully.
i Please note that the driving safety
systems described only work as effectively
as possible if there is adequate contact
between the tires and the road surface. Pay
particular attention to the information
regarding tires, recommended minimum
tire tread depths etc. in the "Wheels and
tires" section (Y page 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. 60
Driving safety systemsSafety
Useful information
i This 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.
i Read the information on qualified
specialist workshops: (Y page 24).SmartKey
Important safety notes
G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very hot, and a child could be burned on these
parts.
G
WARNING
Do not carry heavy or hard objects in the
passenger compartment or cargo
compartment unless they are firmly secured
in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident G
WARNING
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. SmartKey functions
G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of
parking position P.
R shift the manual transmission into neutral.
R starting the engine.
There is a risk of an accident and injury. 68
SmartKeyOpening and closing
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. 0043
0037 To lock the vehicle
0044 0036 To unlock the vehicle
X To unlock centrally: press the0036
button.
If you do not open the vehicle within
approximately 40 seconds of unlocking:
R the vehicle is locked again.
R the theft deterrent locking system is
armed again.
X To lock centrally: press the0037button.
The SmartKey centrally locks/unlocks:
R the doors
R the rear door
R the fuel filler flap
i When unlocking, the turn signals flash
once. When locking, they flash three times.
You 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 (Y page 216).
When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer (Y page 215). Changing the settings of the locking
system
You can change the setting of the locking
system in such a way that only the driver's
door and the fuel filler flap are unlocked. This
is useful if you frequently travel on your own.
i
If the setting of the locking system is
changed within the signal range of the
vehicle, pressing the 0037or0036 button
locks or unlocks the vehicle.
X To change the setting: press and hold
down the 0036and0037 buttons
simultaneously for approximately six
seconds until battery check lamp 0043
flashes twice.
The SmartKey now functions as follows:
X To unlock the driver's door and fuel
filler flap: press the0036button once.
X To unlock centrally: press the0036
button twice.
X To lock centrally: press the0037button. SmartKey
69Opening and closing Z
Restoring the factory settings
X
Press the 0036and0037 buttons
simultaneously for approximately six
seconds until battery check lamp 0043
flashes twice. 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 or the rear door, the
anti-theft alarm system will be triggered
(Y page 65).
X To end the alarm: insert the SmartKey into
the ignition lock.
Removing the mechanical key 0043
Release catch
0044 Mechanical key X
Push release catch 0043in the direction of
the arrow and at the same time remove
mechanical key 0044from the SmartKey. SmartKey battery
Important safety notes G
WARNING
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, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm.
Mercedes-Benz recommends that you have
the batteries replaced at a qualified specialist
workshop.
Checking the battery X
Press the 0037or0036 button.
The battery is working properly if battery
check lamp 0043lights up briefly. 70
SmartKeyOpening and closing
Doors
Important safety notes
G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts. G
WARNING
Do not carry heavy or hard objects in the
passenger compartment or cargo
compartment unless they are firmly secured
in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of park
position P or shift manual transmission into
neutral.
R start 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. Unlocking and opening doors from
the inside
If the vehicle has previously been locked with
the SmartKey, opening a door from the inside
will trigger the anti-theft alarm system.
Switch off the alarm (Y page 65).
Only open the door when the traffic situation
permits. Doors
73Opening and closing Z
X
Front doors: pull door handle 0044.
If the door is locked, locking knob 0043pops
up. The door is unlocked and can be
opened.
X Rear compartment doors: pull
handle 0043up.
The door is unlocked.
X Pull door handle 0044. Centrally locking and unlocking the
vehicle from the inside G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of
parking position P.
R shift the manual transmission into neutral.
R starting 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.
You can centrally lock or unlock the vehicle
from the inside.
The central locking button does not lock or
unlock the fuel filler flap. X
To unlock: press button 0043.
X To lock: press button 0044.
The vehicle locks when all the doors and
the tailgate are closed.
You can open a front door from inside the
vehicle even if it has been locked. Only open
the door when the traffic situation permits.
If the vehicle has been locked with the central
locking button:
R and the SmartKey is restored to the factory
settings, the entire vehicle is unlocked if a
front door is opened from inside the
vehicle.
R and the SmartKey is set to an individual
setting, only the front door that is opened
from inside the vehicle is unlocked.
If the vehicle has been locked centrally with
the SmartKey, it does not unlock if you use
the central locking button.
i You cannot unlock the vehicle centrally
from the inside if the vehicle has been
locked from the outside using the
SmartKey.
i It is only possible to lock the vehicle
centrally if all doors are closed. 74
DoorsOpening and closing