Page 75 of 376
75 Safety and Security
Anti-theft systems
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating
With the key: Removing the key from
the starter switch activates the immo-
bilizer.
With KEYLESS-GO*: Turning off the en-
gine by means of the start/stop button
on the gear selector lever activates the
immobilizer.
Deactivating
With the key: Inserting the key in the
starter switch deactivates the immobi-
lizer.
With KEYLESS-GO*: Starting the en-
gine by means of the start/stop button
on the gear selector lever deactivates
the immobilizer.
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 space under the armrest
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
iIf the alarm stays on for more than
20 seconds, an emergency call is initi-
ated automatically by the Tele Aid sys-
tem (
page 202) provided Tele Aid
service was subscribed to and properly
activated.
Page 76 of 376
76 Safety and SecurityAnti-theft systemsArming the alarm system
The alarm system is armed after locking
the vehicle with the remote control. The
turn signal lamps blink three times to indi-
cate that the alarm system is activated.
The
‹
indicator lamp in the central
locking switch (
page 23) will blink after
approximately 10 seconds when the alarm
system is completely armed.Disarming the alarm system
The alarm system is disarmed when you
unlock your vehicle with the remote con-
trol. The turn signal lamps blink once to in-
dicate that the alarm system is
deactivated.
Canceling the alarm
To cancel the alarm:
With the key
Insert the key in the starter switch.
or
Press the
Œ
or
‹
button.
The alarm is canceled.With KEYLESS-GO*
Grasp the outside door handle.
or
Press the KEYLESS-GO start/stop but-
ton.
The alarm is canceled.
iIf the turn signal lamps do not blink
three times, a door or the hood may not
be closed properly.
Close the respective element and lock
the vehicle again.
iThe alarm system will rearm automati-
cally again after aprroximately 40 sec-
onds if no door was opened.
Page 79 of 376
79 Controls in detail
Locking and unlocking
Seats
Memory function
Lighting
Instrument cluster
Control system
Automatic transmission
Good visibility
Automatic climate control
Power windows
Retractable hardtop
Driving systems
Useful features
Page 80 of 376
80 Controls in detailLocking and unlockingIn 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 unlockingKeys
Your vehicle comes supplied with two
SmartKeys with remote controls and a re-
movable mechanical key. The locking tabs
for the mechanical key portion of the two
keys are a different color to help distin-
guish each key unit.
The remote control key provides an ex-
tended operating range. To prevent theft,
however, it is advisable to only unlock the
vehicle when you are in close proximity to
it.
The key centrally locks and unlocks:
the doors
the trunk lid
the glove box
the storage space under the armrest
the storage compartment in the rear
the fuel filler flap
SmartKey with remote controls1‹
Lock button
2
Š
Unlock button for the trunk lid
3Mechanical key locking tab
4
Œ
Unlock button
5Battery check lamp
6
Â
Panic button (
page 67)
iYou can also open and close the re-
tractable hardtop using the key
(page 163).
Page 83 of 376
83 Controls in detail
Locking and unlocking
Opening the trunk lid
The handle is located in the rear license
plate recess.
1Trunk lid lock
2Handle
Lift the trunk lid.The trunk can also be opened from the in-
side in an emergency, see Trunk lid emer-
gency release (
page 90).
Separately locking the trunk
Close the trunk lid (
page 91).
Pull the mechanical key out of the
SmartKey (
page 290).
Insert the mechanical key in the trunk
lid lock.1Unlocked
2Locked
Turn the key completely to the right to
position2.
The trunk remains locked even when
the vehicle is centrally unlocked.
iThe vehicle must be unlocked.
To facilitate trunk loading and unload-
ing when the hardtop is retracted, you
can raise the hardtop from its storage
position in the trunk using the loading
aid feature (
page 198). You may also
unhook the luggage cover.
Remember to resecure the luggage
cover after loading/unloading the
trunk. Otherwise you will not be able to
lower the retractable hardtop.
iYou can only cancel the separate trunk
locking mode by means of the mechan-
ical key.
Page 85 of 376
85 Controls in detail
Locking and unlocking
Important notes on using KEYLESS-GO*
Always carry the KEYLESS-GO card
with you.
Never store the KEYLESS-GO card to-
gether with:
electronic items such as a cellular
phone or another KEYLESS-GO card
metallic objects such as coins or
metal foil
Doing so could impair the function of
the KEYLESS-GO system.
Always take a SmartKey with you in
case of a malfunction of the KEY-
LESS-GO system.
To lock or unlock the vehicle, the card
must be located outside the vehicle
within approximately 3 ft. (1 m) of a
door or the trunk lid.
In order to start the engine with the
KEYLESS-GO card
the KEYLESS-GO card must be lo-
cated in the vehicle
all the doors must be closed
If you have started the engine with the
KEYLESS-GO start/stop button, you
can only turn it off again with this but-
ton, even if you have put the key in the
starter switch in the meantime.
This does not apply if, after starting, the
selector lever is still in positionP. The
key will then have priority over the card
and the vehicle’s electrical system will
operate according to the position of
the key in the starter switch, even stop-
ping the engine.
If the KEYLESS-GO card is positioned
farther away from the vehicle (e.g. in-
side clothing or briefcase) and can no
longer be recognized by the system,
the vehicle cannot be locked or the en-
gine started via the KEYLESS-GO sys-
tem.
If the KEYLESS-GO card is removed
from the vehicle while the ignition is
switched on (e.g. if passenger exits the
vehicle with the card), the message Chip card not recognized!
will ap-
pear in the multifunction display.
Find the card or change its present lo-
cation immediately (e.g. place it on the
front passenger seat or insert it in shirt
pocket).
Remember that the engine can be
started by anyone with a KEYLESS-GO
card that is left inside the vehicle. If you
leave the card behind when exiting and
locking the vehicle, the message
Chip
card still in vehicle!
will appear in
the multifunction display.
Page 89 of 376
89 Controls in detail
Locking and unlocking
Loss of KEYLESS-GO-card
If you lose your KEYLESS-GO card, you
should do the following:
Have the KEYLESS-GO card deactivat-
ed by an authorized Mercedes-Benz
Center.
Report the loss immediately to your car
insurance company.
Have the mechanical lock replaced if
necessary.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
Opening the doors from the inside
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.
1Locking knob
2Inside door handle
Pull on the door handle2.
If door was locked, the locking knob1
will move up.
Opening the trunk from the inside
You can open the trunk from the inside if
the vehicle is stationary and the retract-
able hardtop is fully opened or closed. The
switch is located on the driver’s door.
1Remote trunk lid release switch
2Indicator lamp
iIf you open a door, the side windows on
that side of the vehicle will lower slight-
ly. The windows close again when you
close the door.
Page 90 of 376
90 Controls in detailLocking and unlocking
Pull remote trunk lid release switch1.
The trunk unlocks. The indicator
lamp2 comes on. It remains lit until
you close the trunk again.
Trunk lid emergency release
The emergency release button is located
on the left side of the trunk.
Illumination of the emergency release but-
ton:
The button will blink for 30 minutes af-
ter opening the trunk.
The button will blink for 60 minutes af-
ter closing the trunk.
Briefly press the emergency release
button.
The trunk unlocks and the trunk lid
opens.
iTo facilitate trunk loading and unload-
ing when the hardtop is retracted, you
can raise the hardtop from its storage
position in the trunk using the loading
aid feature (
page 198). You may also
unhook the luggage cover.
Remember to resecure the luggage
cover after loading/unloading the
trunk. Otherwise you will not be able to
lower the retractable hardtop.
!The emergency release button does
not open the trunk lid if the vehicle bat-
tery is discharged or disconnected.iIf the emergency release button is
pressed and the vehicle was centrally
locked, the exterior lamps will flash and
the alarm will sound as the trunk lid
opens.
To cancel the alarm, insert the key in
the starter switch or press button
Œ
or
‹
on the key.
