Page 86 of 434
85 Safety and Security
Anti-theft systems
Anti-theft alarm system
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens
a door
the trunk lid
the hood
a storage compartment in the rear
the glove box
the storage compartment under the
armrest
The alarm will stay on, even if the activat-
ing element (a door, for example) is imme-
diately closed.The alarm system will also be triggered
when
someone attempts to raise the vehicle
unlocking and opening the driver’s
door with the mechanical key
someone opens a door from the inside
if the vehicle was locked from the out-
side with the SmartKey
someone opens the trunk lid with the
emergency release buttonArming the alarm system
The alarm system is armed after locking
the vehicle with the SmartKey or
KEYLESS-GO*. The turn signal lamps flash
three times to indicate that the alarm sys-
tem is activated. The ‹ indicator lamp
in the central locking switch (
page 25)
begins to flash after arming the alarm sys-
tem.
iIf the alarm stays on for more than
20 seconds, an emergency call is initi-
ated automatically by the Tele Aid sys-
tem (
page 225) provided Tele Aid
service was subscribed to and properly
activated, and that necessary cellular
service and GPS coverage are avail-
able.
iIf the turn signal lamps do not flash
three times, a door or the trunk lid may
not be properly closed.
Close the respective element and lock
the vehicle again.
Page 91 of 434
90 Controls in detailLocking and unlocking
In the “Controls in detail” section you will
find detailed information on how to oper-
ate the equipment installed on your vehi-
cle. If you are already familiar with the
basic functions of your vehicle, this section
will be of particular interest to you.
To quickly familiarize yourself with the ba-
sic functions of the vehicle, refer to the
“Getting started” section of this manual.
The corresponding page numbers are giv-
en at the beginning of each segment.
Locking and unlocking
SmartKey
Your vehicle comes supplied with two
SmartKeys, each with remote control and
a removable mechanical key. The locking
tabs for the mechanical key portion of the
two SmartKeys are a different color to help
distinguish each SmartKey unit.
The SmartKey provides an extended oper-
ating range. To prevent theft, however, it is
advisable to only unlock the vehicle when
you are in close proximity to it.
The SmartKey centrally locks and unlocks:
the doors
the trunk lid
the glove box
the storage compartment under the
armrest
the storage compartment in the rear
the fuel filler flap
SmartKey with remote control1‹Lock button
2Š Unlock button for the trunk lid
3Mechanical key locking tab
4ΠUnlock button
5Battery check lamp
6Â Panic button (
page 74)
Page 94 of 434
93 Controls in detail
Locking and unlocking
Loss of SmartKey or mechanical key
If you lose a SmartKey or mechanical key,
you should do the following:
Have the SmartKey deactivated by an
authorized Mercedes-Benz Center.
Report the loss of the SmartKey or the
mechanical key to your car insurance
company immediately.
If necessary, have the mechanical lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
SmartKey with KEYLESS-GO*
Vehicles equipped with KEYLESS-GO*
come with two SmartKeys with
KEYLESS-GO, each with remote controls
and a removable mechanical key. The lock-
ing tabs for the mechanical key portion of
the two SmartKeys are a different color to
help distinguish each SmartKey unit.
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked every time you grasp a door
handle.
If the SmartKey with KEYLESS-GO is valid,
your vehicle unlocks
the doors
the trunk lid
the glove box
the storage compartment under the
armrest
the storage compartment in the rear
the fuel filler flap
SmartKey with KEYLESS-GO1‹Lock button
2Š Unlock button for the trunk lid
3Mechanical key locking tab
4ŒUnlock button
5Battery check lamp
6Â Panic button (
page 74)
For information on using the SmartKey
buttons, see “SmartKey” (page 90).
Page 181 of 434
180 Controls in detailAutomatic climate controlActivating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press ± again (
page 171).
The indicator lamp on the ± button
goes out.
The air conditioning uses the refrigerant
R134A. This refrigerant is free of CFCs
which are harmful to the ozone layer.
Ventilated storage compartments
The glove box and the armrest storage
compartment have their own air vents that
allow for cooling ventilation when the auto-
matic climate control system is activated.Glove box1Thumbwheel
2Air ventOpening the air vent
Turn thumbwheel1 upwards.
Closing the air vent
Turn thumbwheel1 downwards.
Storage compartment under the armrest1Thumbwheel
2Air vent
Opening the air vent
Turn thumbwheel1 to the right.
Closing the air vent
Turn thumbwheel1 to the left.
!If the ± button on the automatic cli-
mate control panel starts to flash, this
indicates that the air conditioning is
losing refrigerant. The compressor has
turned off. The air conditioning cannot
be turned on again.
Have the air conditioning checked
at the nearest authorized
Mercedes-Benz Center.
iYou should keep these air vents closed
when outside temperatures are low.
Page 215 of 434
214 Controls in detailUseful features
Useful featuresStorage compartments Glove box
An AUX socket to the audio system for por-
table audio devices is installed in the glove
box.
1Button to open
2Glove box
Opening the glove box
Press button1.
The glove box lid opens downward.
Closing the glove box
Push lid up to close.Cup holders
1Left cup holder
2Right cup holder
Opening
Briefly press cup holder cover.
The cup holder opens automatically.
Warning!
G
To help avoid personal injury during a colli-
sion or sudden maneuver, exercise care
when stowing objects in the vehicle. Put lug-
gage or cargo in the trunk if possible. Do not
pile luggage or cargo higher than the seat
backs. Do not place anything on shelf be-
hind roll bar.
Parcel nets cannot secure hard or heavy ob-
jects. Warning!
G
Keep compartment lids closed. This will help
to prevent stored objects from being thrown
about and injuring vehicle occupants during
an accident.
Page 218 of 434
217 Controls in detail
Useful features
Insert the mechanical key into the
glove box lock and turn it to
position3.
The following storage compartments
will be locked. They can then not be
opened with the SmartKey or with the
SmartKey with KEYLESS-GO*:
Glove box
Armrest storage compartments
Rear storage compartmentsUnlocking the storage compartments
separately
Turn the mechanical key in the glove
box lock to position1.
You can now open the storage com-
partments.
Parcel net in passenger footwellParcel net in trunk
There are three nets available in the trunk
to secure loads:
a pocket net on each side of the right
and left trunk side walls
a trunk floor net
Pull the trunk floor net from the trunk
back wall towards the front over the
luggage.
Hang the hooks of the net on the eyes
on the trunk floor.
iThe separate locking status of these
storage compartments can only be
canceled by means of the mechanical
key.
The storage compartments in the doors
cannot be locked.
Warning!
G
Do not place heavy or fragile objects, or ob-
jects having sharp edges, in the parcel net.
In an accident, during hard braking or sud-
den maneuvers, they could be thrown
around inside the vehicle, and cause injury
to vehicle occupants.
Page 327 of 434
326 Practical hintsLocking/unlocking in an emergencyUnlocking the trunk
A minimum height clearance of
6.2 ft (1.89 m) is required to open the
trunk lid.
If you are unable to unlock the trunk with
the SmartKey, open the trunk with the me-
chanical key.
The handle is located above the rear li-
cense plate recess.Trunk lid lock1Unlocking
2Handle
Insert the mechanical key into the
trunk lid lock.
Turn the mechanical key counterclock-
wise to position 1 and hold it in this
position.
Pull the trunk lid handle 2 and lift lid.Unlocking interior storage compart-
ments
Locking storage areas in the passenger
compartment include:
the glove box
the storage compartment under the
armrest
the rear storage compartments
If these cannot be unlocked by means of
the SmartKey, the SmartKey with
KEYLESS-GO*, or the central locking but-
ton, use the mechanical key to open the
glove box.
iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft
alarm system. To cancel the alarm, do
one of the following:
Press button Œ or ‹on the
SmartKey.
Insert the SmartKey in the starter
switch.
Press the KEYLESS-GO* start/stop
button (
page 33).
Grasp the outside door handle (ve-
hicles with KEYLESS-GO* only).
iThe storage compartment under the
armrest and the rear storage compart-
ments can only be unlocked at the
glove box lock using the mechanical
key.
Page 328 of 434
327 Practical hints
Locking/unlocking in an emergency
1Separately unlock storage compart-
ments
2Centrally lock/unlock storage com-
partments
3Separately lock storage compartments
Slide mechanical key out of SmartKey
housing (
page 325).
Insert the mechanical key into the
glove box lock and turn it to
position2.
All storage compartments are now un-
locked.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey, lock it with the mechanical
key as follows:
Close the passenger door and the trunk
lid.
Press the central locking switch in the
center console (
page 105).
Check to see whether the locking knob
on the passenger door is still visible. If
necessary push it down manually.
Slide the mechanical key out of the
SmartKey.
Lock the driver’s door with the me-
chanical key.
Lowering the load assist manually
If the load assist feature does not fully low-
er the retractable hardtop into the trunk
compartment and you are unable to close
the trunk lid, follow the instructions below.
1Hex-socket wrench
2Locking screw
Remove the trunk floor from the trunk.
Lift up the lid located at the lower left
side of the trunk.
Have a second person lift and hold the
retracted hardtop.
