Page 91 of 473
90 Safety and Security
Anti-theft systems
Disarming the alarm system
Unlock the vehicle with the SmartKey.
The turn signal lamps flash once and an
acoustic signal sounds once (if
equipped and feature activated), to
indicate that the alarm system is dis-
armed.
Canceling the alarm
To cancel the alarm:
Press theŒ or‹ button on the
SmartKey.
or
Insert the SmartKey in the starter
switch.
Tow-away alarm*
Depending on vehicle production date,
your vehicle may not be equipped with the
tow-away alarm.
Once the tow-away alarm is armed, a visual
and audible alarm will be triggered when
someone attempts to raise the vehicle.Arming the tow-away alarm
Lock the vehicle with the SmartKey.
The tow-away alarm is automatically
armed after about 30 seconds.
Disarming the tow-away alarm
To prevent triggering the tow-away alarm,
switch off the tow-away alarm feature
before towing the vehicle, or when parking
on a surface subject to movement, such as
a ferry or auto train.
i
The alarm system will rearm automati-
cally after approximately 40 seconds if
neither a door nor the trunk lid was
opened.i
If the alarm stays on for more than
30 seconds, a call to the Response
Center is initiated automatically by the
Tele Aid system* (
page 264) provid-
ed Tele Aid service was subscribed to
and properly activated, and that neces-
sary cellular service and GPS coverage
are available.
i
When you unlock the vehicle, the
tow-away protection disarms
automatically. The tow-away alarm
remains disarmed until you lock the
vehicle again.
Page 92 of 473
91 Safety and Security
Anti-theft systems
The switch is located on the center
console.
1Tow-away alarm off switch
2Indicator lamp
Switch off the ignition (page 33).
Remove the SmartKey from the starter
switch.
Press tow-away alarm off switch1.
Indicator lamp2 in the tow-away
alarm off switch comes on briefly.
Exit the vehicle.
Lock the vehicle with the SmartKey.
The tow-away alarm remains disarmed
until you lock the vehicle again.Canceling the tow-away alarm
To cancel the alarm:
Press theŒ or‹ button on the
SmartKey.
or
Insert the SmartKey in the starter
switch.
i
You cannot disarm the tow-away alarm
while the ignition is switched on.
Page 95 of 473
94 Controls in detail
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.
For more information on locking and
unlocking, see “Getting started”
(
page 32) and (page 54).
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
the fuel filler flap
SmartKey with remote control
1‹ Lock button
2Š Opening button for trunk
3Mechanical key locking tab
4ΠUnlock button
5Battery check lamp
6Â Panic button* (
page 81).
i
Canada only:
Only vehicles equipped with an
anti-theft alarm system* have
SmartKeys with integrated panic
button6.
Page 97 of 473
96 Controls in detail
Locking and unlocking
Factory settingGlobal unlocking
Press buttonŒ.
All turn signal lamps flash once.
An acoustic signal sounds once
(if equipped and feature activated).
The locking knobs in the doors
move up.
The anti-theft alarm system* is dis-
armed.
The vehicle will lock again automatically
and reactivate the anti-theft alarm
system* within approximately 40 seconds
of unlocking if:
neither a door nor the trunk is opened
the SmartKey is not inserted in the
starter switch
the central locking switch is not
activatedGlobal locking
Press button‹.
All turn signal lamps flash three
times.
An acoustic signal sounds three
times (if equipped and feature acti-
vated).
The locking knobs in the doors
move down.
The anti-theft alarm system* is
armed.
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey so that
pressingŒ only unlocks the driver’s
door and the fuel filler flap.
Press and hold buttonsŒ and‹
simultaneously for about 5 seconds.
Battery check lamp5 (
page 94)
flashes twice.
i
Your vehicle may be equipped with an
acoustic lock and unlock confirmation
signal feature. If your vehicle is
equipped with this feature and the fea-
ture is activated, an acoustic signal will
sound when the vehicle is locked or un-
locked using the SmartKey.
To determine whether or not your vehi-
cle is equipped with this feature, con-
tact an authorized Mercedes-Benz
Center. If equipped and you wish to ac-
tivate or deactivate the feature, or ad-
just its signal volume, also contact an
authorized Mercedes-Benz Center.
Page 98 of 473
97 Controls in detail
Locking and unlocking
The SmartKey will then function as follows:
Unlocking driver’s door and fuel filler
flap
Press buttonΠonce.
All turn signal lamps flash once.
An acoustic signal sounds once
(if equipped and feature activated).
The locking knob in the driver’s
door moves up.
The anti-theft alarm system* is dis-
armed.
Global unlocking
Press buttonΠtwice.
All turn signal lamps flash once.
An acoustic signal sounds once
(if equipped and feature activated).
The locking knobs in the doors
move up.
The anti-theft alarm system* is dis-
armed.Global locking
Press button‹.
All turn signal lamps flash three
times.
An acoustic signal sounds three
times (if equipped and feature acti-
vated).
The locking knobs in the doors
move down.
The anti-theft alarm system* is
armed.
Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about 6 seconds un-
til battery check lamp5 (
page 94)
flashes twice.
The SmartKey is set to factory setting
again.
!
If you can no longer lock or unlock the
vehicle with the SmartKey, then either
the batteries in the SmartKey are dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.
Try second SmartKey.
Check the batteries in the
SmartKey (
page 98) and replace
them if necessary (
page 393).
Use the mechanical key to unlock
the driver’s door (
page 386) and
the trunk (
page 387).
Use the mechanical key to lock the
driver’s door (
page 387) and the
trunk (
page 103).
Have the vehicle battery and the
battery connections checked
(
page 411).
If the SmartKey is malfunctioning,
contact an authorized Mercedes-Benz
Center.
Page 100 of 473
99 Controls in detail
Locking and unlocking
Opening the doors from the inside
You can open a locked door from the
inside. Open door only when conditions
are safe to do so.
1Locking knob
2Inside door handleFront doors
Pull on door handle2 on the
respective front door to open door.
If door was locked, locking knob1 will
move up.
Rear doors
Pull up locking knob1 on the
respective rear door to unlock door.
Pull on door handle2 on the
respective rear door to open door.
Opening the trunk
Opening the trunk from the outside
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
The handle is located above the rear
license plate recess.
1Handle
i
If the vehicle has previously been
locked with the SmartKey, opening a
door from the inside will trigger the
anti-theft alarm system*.
To cancel the alarm, do one of the
following:
Press buttonŒ or‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
Page 103 of 473
102 Controls in detail
Locking and unlocking
Trunk emergency release
With the emergency release button, the
trunk can be opened from inside the trunk.
The emergency release button is located
on the inside of the trunk lid.
1Emergency release button
Briefly press emergency release
button1.
The trunk unlocks and the trunk lid
opens.Illumination of the emergency release
button:
The button flashes 30 minutes after
opening the trunk.
The button flashes 60 minutes after
closing the trunk.
!
The trunk lid swings open upwards
automatically.
i
The emergency release button unlocks
and opens the trunk while the vehicle is
standing still or in motion.
i
The emergency release button does
not open the trunk lid if the vehicle
battery is discharged or disconnected.
i
If the vehicle has previously been
locked with the SmartKey, opening the
trunk from the inside using the emer-
gency release button will trigger the
anti-theft alarm system*.
To cancel the alarm, do one of the
following:
Press buttonŒ or‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
Page 266 of 473
265 Controls in detail
Useful features
The Tele Aid system
(Tele
matic Alarm Identification on
D
emand)
The Tele Aid system consists of three
types of response:
automatic and manual emergency
roadside assistance
information
The Tele Aid system is operational provid-
ing that the vehicle’s battery is charged,
properly connected, not damaged and cel-
lular and GPS coverage is available.The speaker volume of a Tele Aid call can
be adjusted when using the volume control
on the audio system or COMAND* System
or on the multifunction steering wheel. To
raise, turn the rotary volume control on au-
dio system or COMAND* System clock-
wise or press buttonæ on the
multifunction steering wheel. To lower,
turn the rotary volume control on audio
system or COMAND* System control
counterclockwise or press buttonç on
the multifunction steering wheel.
To activate, press the SOS button, the
Roadside Assistance button• or
the Information button¡, depend-
ing on the type of response required.
i
The SOS button is located in the over-
head control panel (
page 267).
The Roadside Assistance button•
and the Information button¡ are
located in the armrest storage com-
partment (
page 257).
!
The Tele Aid system utilizes the cellular
network for communication and the
GPS (G
lobal Positioning System) satel-
lites for vehicle location. If either of
these signals are unavailable, the
Tele Aid system may not function and if
this occurs, assistance must be sum-
moned by other means.
