
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

Useful information
..............................68
SmartKey ............................................. 68
Doors .................................................... 73
Rear door ............................................. 76
Side windows ...................................... 77
Sliding sunroof .................................... 79 67Opening and closing

0043
Front left
0044 Front right
0087 Rear right
0085 Rear left
X Turn the SmartKey to position 1or 2in the
ignition.
X To open: press the corresponding switch.
X To close: pull the corresponding switch.
X To open automatically: press the
corresponding switch briefly beyond the
point of resistance.
The side window opens completely.
X To interrupt automatic operation: press
or pull the corresponding switch again.
i You can continue to operate the side
windows after you switch off the engine or
remove the SmartKey. This function is
available for up to five minutes or until the
driver's or front-passenger door is opened.
i The side windows cannot be operated
from the rear when the override feature for
the side windows is activated (Y page 60).Convenience opening
i The convenience opening feature can
only be operated using the SmartKey. The
SmartKey must be close to the driver's
door handle. You can ventilate the vehicle before you start
driving. To do this, the SmartKey is used to
carry out the following functions
simultaneously:
R
unlock the vehicle
R open the side windows
R open the sliding sunroof
R switch on the seat ventilation for the
driver's seat and front-passenger seat
X Point the tip of the SmartKey at the driver's
door handle.
X Press and hold the 0036button until the
side windows and the sliding sunroof are in
the desired position.
X To interrupt convenience opening:
release the 0036button. Problems with the side windows
G
WARNING
Closing the side windows with increased force
or without the anti-entrapment feature could
lead to serious or even fatal injury. Make sure
that nobody can become trapped when
closing the side windows.
Problem: a side window cannot be closed
because objects are trapped between the
side window and the door frame.
X Remove the objects.
X Close the side window.
Problem: a side window cannot be closed
and you cannot see the cause.
If a side window is obstructed during closing
and reopens again slightly:
X Immediately after the window blocks, pull
the corresponding switch again until the
side window has closed. 78
Side windowsOpening and closing

If a side window is obstructed again during
closing and reopens again slightly:
X Immediately after the window blocks, pull
the corresponding switch again until the
side window has closed.
i If a side window no longer opens or closes
due to a malfunction, contact a qualified
specialist workshop. Sliding sunroof
Important safety notes
! Only open the sliding sunroof if it is free
of snow and ice. Otherwise, malfunctions
may occur.
Do not allow anything to protrude from the
sliding sunroof. Otherwise, the seals could
be damaged.
! If the sliding sunroof still cannot be
opened or closed as a result of a
malfunction, contact a qualified specialist
workshop.
! The weather can change abruptly. It could
start to rain or snow. Make sure that the
sliding sunroof is closed when you leave the
vehicle. The vehicle electronics can be
damaged if water enters the vehicle
interior.
i Resonance noises can occur in addition
to the usual airflow noises when the sliding
sunroof is open. They are caused by minor
pressure fluctuations in the vehicle interior.
Change the position of the sliding sunroof
or open a side window slightly to reduce or
eliminate these noises. Opening and closing the sliding
sunroof
Overhead control panel
0043
To raise
0044 To open
0087 To close/lower
X Turn the SmartKey to position 1or
2(Y page 139) in the ignition.
X Press or pull the 006Aswitch in the
corresponding direction.
X To open automatically: press the006A
switch briefly beyond the point of
resistance in the direction of arrow 0044.
The sliding sunroof opens completely.
X To interrupt automatic operation: press
or pull the 006Aswitch again.
i When opening and raising the roof,
automatic operation is only available if the
sliding sunroof is in the closed position. Operating the sliding sunroof
manually
The actuator is located in the cargo
compartment, on the left-hand side behind
the rear wall trim. Sliding sunroof
79Opening and closing Z

X
Open the rear door.
X Pull off edge protection 0043from the door
pillar in the direction of arrow 0044.
X Pull away rear panel trim 0087as far as
necessary in the direction of arrow 0085until
the electrical connections can be
accessed.
X Disconnect the electrical connections.
X Remove rear panel trim 0087completely. X
Take lug wrench 0083out of the vehicle tool
kit (Y page 296).
X Place lug wrench 0083onto the hexagonal nut
of the actuator.
X To open: turn lug wrench 0083counter-
clockwise.
X To close: turn lug wrench 0083clockwise. X
Reconnect the electrical connections.
X Re-install rear panel trim 0087.
When doing so, hook lugs 0084of rear panel
trim 0087into vehicle side wall 006B.
X Re-install edge protection 0043.
X Close the rear door. Problems with the sliding sunroof
G
WARNING
You could be severely or even fatally injured
when closing the sliding sunroof with
increased closing force or if the anti-
entrapment feature is deactivated. Make sure
that nobody can become trapped when
closing the sliding sunroof.
! If the sliding sunroof still cannot be
opened or closed as a result of a
malfunction, contact a qualified specialist
workshop.
Problem: the sunroof cannot be closed
and you cannot see the cause. 80
Sliding sunroofOpening and closing

If the sliding sunroof is obstructed during
closing and reopens again slightly:
X Immediately after the sliding sunroof
blocks, pull the 006Aswitch in the
overhead control panel down to the point
of resistance and hold it until the sliding
sunroof is closed.
If the sliding sunroof is obstructed again
during closing and reopens again slightly:
X Immediately after the sliding sunroof
blocks, pull the 006Aswitch in the
overhead control panel down to the point
of resistance and hold it until the sliding
sunroof is closed. Sliding sunroof
81Opening and closing Z

The system automatically switches down
from level 2to level1 after approximately
10 minutes.
The system automatically switches off
approximately 35 minutes after it is set to
level 1.
Problems with the seat heating If the on-board voltage is too low, the seat
heating is switched off automatically.
X Switch off electrical consumers which you
do not need, such as the rear window
defroster or interior lighting.
If the on-board voltage is only interrupted
briefly, the seat heating will switch back on
automatically. If the seat heating is not
switched on automatically:
X Switch the seat heating on manually
(Y page 89) Switching the seat ventilation on/off
Activating/deactivating Seat ventilation is only available for the front
seats.
The three blue indicator lamps in the buttons
indicate the ventilation level you have
selected.
X Make sure that the SmartKey is in
position 2(Y page 139) in the ignition lock.
X To switch on: press button0043repeatedly
until the desired ventilation level is set. i
If you open the side windows and the
sliding sunroof using the SmartKey
(Y page 78), the driver's seat ventilation
automatically switches to the highest level.
X To switch off: press button0043repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
Problems with the seat ventilation If one or all of the indicator lamps in the seat
ventilation button are flashing, the seat
ventilation has switched off automatically.
The vehicle's electrical system voltage is too
low because too many electrical consumers
are switched on.
X
Switch off electrical consumers that you do
not need, such as the rear window
defroster or interior lighting.
Once the battery is sufficiently charged, the
seat ventilation will switch back on
automatically. Steering wheel
Important safety notes
G
WARNING
Do not adjust the steering wheel while driving.
Adjusting the steering wheel while driving
could cause the driver to lose control of the
vehicle.
The electrical steering wheel adjustment
feature can be operated at any time.
Therefore, do not leave children unattended
in the vehicle, 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. 90
Steering wheelSeats, steering wheel and mirrors

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).Overview of climate control systems
Important safety notes
G
WARNING
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled replacement interval. A clogged
filter will reduce the air volume to the interior
and the windows could fog up, impairing
visibility and endangering you and others.
Have a blocked filter replaced at a Mercedes-
Benz Center as soon as possible.
Observe the settings recommended on the
following pages. The windows could
otherwise fog up. This could prevent you from
observing the traffic conditions, thereby
causing an accident.
Dual-zone automatic climate control
regulates the temperature and the humidity
in the vehicle interior and filters undesirable
substances from the air.
Automatic climate control is only operational
when the engine is running. Optimum
operation is only achieved if you drive with the
side windows and sliding sunroof closed.
The climatic comfort deteriorates whilst the
sliding sunroof is open. The automatic climate
control cannot maintain the set temperature
with the sliding sunroof open. You have to
adjust the climate control manually. i
The residual heat function can only be
activated or deactivated with the ignition
switched off.
i The residual heat function can only be
activated or deactivated with the ignition
switched off (Y page 134).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature (Y page 78).
This will speed up the cooling process and
the desired vehicle interior temperature
will be reached more quickly.
i The integrated filter can filter out most
particles of dust, and completely filters out
pollen. A clogged filter reduces the amount
of air supplied to the vehicle interior. For
this reason, you should always observe the
interval for replacing the filter, which is
specified in the Maintenance Booklet. As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Maintenance
Booklet. 118
Overview of climate control systemsClimate control