Page 99 of 457

98 Safety and Security
Anti-theft systems
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 tow-away alarm
Lock the vehicle with the SmartKey
(
page 65).
The tow-away alarm is automatically
armed after approximately
30 seconds.Disarming tow-away alarm
To prevent triggering the tow-away alarm
feature, switch off the tow-away alarm
before towing the vehicle, or when parking
on a surface subject to movement, such as
a ferry or auto train.
The tow-away alarm off switch is located
on the upper part of the center console.
1Tow-away alarm off switch
2Indicator lamp
Switch off the ignition and remove the
SmartKey from the starter switch.
Press switch1.
Indicator lamp2 comes on briefly.
Exit and lock the vehicle with the
SmartKey (
page 65).
Canceling the tow-away alarm
Press theŒ or‹ button on the
SmartKey.
or
Insert the SmartKey in the starter
switch.
iYou cannot disarm the tow-away alarm
when the ignition is switched on.
iWhen you unlock the vehicle, the tow-away
protection disarms automatically.
The tow-away alarm remains disarmed until you
lock your vehicle again.
Page 103 of 457

102 Controls in detail
Locking and unlocking
Factory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once.
The locking knobs in the doors
move up.
The anti-theft alarm system is
disarmed.The vehicle will lock again automatically
and rearm the anti-theft alarm system
within approximately 40 seconds of
unlocking if
neither door nor tailgate is opened
the SmartKey is not inserted in the
starter switch
the central locking switch is not
activated
Global locking
Press button‹.
With the hood, tailgate and all doors
closed:
All turn signal lamps flash three
times.
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 press-
ing buttonŒ only unlocks the driver’s
door and the fuel filler flap.
Press and hold buttonsŒ and‹
simultaneously for about 5 seconds
until battery check lamp5
(
page 100) flashes twice.
The SmartKey will then function as
follows:
Unlocking driver’s door and fuel filler
flap
Press buttonŒ once.
All turn signal lamps flash once.
The locking knobs in the doors
move up.
The anti-theft alarm system is
disarmed.
iYou can also open or close the power
windows and tilt/sliding sunroof using the
SmartKey, see “Summer opening feature”
(
page 193) and see “Convenience closing fea-
ture” (
page 194).
Page 104 of 457

103 Controls in detail
Locking and unlocking
Global unlocking
Press buttonŒ twice.
All turn signal lamps flash once.
The locking knobs in the doors
move up.
The anti-theft alarm system is
disarmed.
Global locking
Press button‹.
With the hood, tailgate and all doors
closed:
All turn signal lamps flash three
times.
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
until battery check lamp5
(
page 100) flashes twice.
Checking batteries in the SmartKey
Press button‹ orŒ.
Battery check lamp5 (
page 100)
comes on briefly to indicate that the
SmartKey batteries are in order.
Loss of the SmartKey
If you lose your SmartKey or mechanical
key, you should do the following:
Have the SmartKey deactivated at an
authorized Mercedes-Benz Light Truck
Center.
Report the loss of the SmartKey or the
mechanical key immediately to your
car insurance company.
If necessary, have the mechanical lock
replaced.
Any authorized Mercedes-Benz Light Truck
Center will be glad to supply you with a re-
placement.
iIf battery check lamp5 does not come on
briefly during check, the SmartKey batteries are
discharged.
Replace the batteries (
page 376).
You can obtain the required batteries at any
authorized Mercedes-Benz Light Truck Center.
iIf the batteries are checked within signal
range of the vehicle, pressing button‹
orŒ will lock or unlock the vehicle
accordingly.
Page 105 of 457

104 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 inside door handle2 on the
respective front door to open door.
If the door was locked, locking knob1
will move up.
Rear doors
Pull up locking knob1 on the
respective rear door to unlock door.
Pull on inside door handle2 on the
respective rear door to open door.
iIf the vehicle has previously been locked
with the SmartKey, opening a door or the tailgate
from the inside will trigger the anti-theft alarm
system.
To cancel the alarm, do one the following:
Insert the SmartKey in the starter switch.
Press buttonŒ or‹ on the
SmartKey.iIf you hear a warning signal you have forgot-
ten to switch off the headlamps before opening
the driver’s door.
In addition the message
Switch off lights
appears in the multifunction display.
Switch off the headlamps.
!Failure to switch off the headlamps when
leaving the vehicle may result in a discharged
battery.
Page 173 of 457

172 Controls in detail
Transfer case
Messages in the multifunction display
If a shift was not completed and one of the
following messages appears in the multi-
function display:
TC shift conditions not fulfilled
The shift did not take place. At least
one shift condition was not met.
Repeat the shift procedure.
TC in neutral
The shift did not take place. The
transfer case is in neutral. Gear
position
N appears in transfer case
indicator1.
Repeat the shift procedure.
TC shift procedure canceled
The shift did not take place.
Repeat the shift procedure.
Transfer case Visit workshop
There may be a malfunction in the
system.
Repeat the shift procedure.
If the shift procedure still does not take
place, have the vehicle checked at an
authorized Mercedes-Benz Light Truck
Center as soon as possible.For more information, see “Practical hints”
section (
page 363).
Warning!G
If the transfer case is in neutral, transmis-
sion positionP will not hold vehicle. The
parking brake must be applied to hold
vehicle in place.
iIf the SmartKey is in starter switch
position0 or1, an alarm will sound if the
transfer case is in neutral and the driver’s door is
opened.
Engage the transfer case to gear positionHIGH
orLOW.
Page 230 of 457

229 Controls in detail
Useful features
Tele Aid
Shortly after the completion of your
Tele Aid acquaintance call, you will receive
a user ID and password. By visiting
www.mbusa.com and selecting “Tele Aid”
(USA only), you will have access to account
information, remote door unlock and
more.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
cellular and GPS coverage are available.
The speaker volume of a Tele Aid call can
be adjusted by using the volume control on
the COMAND system headunit or on the
multifunction steering wheel. To raise, turn
the rotary volume control on the COMAND
system headunit clockwise or press
buttonæ on the multifunction steering
wheel. To lower, turn the rotary volume
control on the COMAND system headunit
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.
!The initial activation of the Tele Aid system
may only be performed by completing the sub-
scriber agreement and placing an acquaintance
call using the Information button¡. Failure
to complete either of these steps will result in a
system that is not activated.
If you have any questions regarding activation,
please call the Response Center at
1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada).
iThe SOS button is located in the overhead
control panel (
page 231).
The Roadside Assistance button•
(
page 232) and the Information button¡
(
page 233) are located below the center
armrest cover.
!The Tele Aid system utilizes the cellular
network for communication and the GPS
(G
lobal Positioning System) satellites for vehicle
location. If either of these signals are unavail-
able, the Tele Aid system may not function and if
this occurs, assistance must be summoned by
other means.
Page 237 of 457

236 Controls in detail
Useful features
The Response Center will then unlock your
vehicle with the remote door unlocking
feature.Stolen Vehicle Recovery services
In the event your vehicle was stolen:
Report the incident to the police.
The police will issue a numbered
incident report.
Pass this number on to the
Mercedes-Benz Response Center along
with your password issued to you when
you subscribed to the service.
The Response Center will then attempt
to covertly contact the vehicle’s
Tele Aid system. Once the vehicle is
located, the Response Center will
contact the local law enforcement and
you. The vehicle’s location will only be
provided to law enforcement.
Garage door opener
The integrated remote control is capable of
operating up to three separately controlled
devices. It provides a convenient way to
replace up to three hand-held remote
controls used to operate devices such as
garage door openers, gate openers, or
other devices compatible with HomeLink
®
or some other systems.
Before the integrated remote control can
be used, it must be programmed to the
garage door opener, gate operator or other
device you wish to operate. See the follow-
ing instructions for programming informa-
tion.
iThe remote door unlock feature is
available if the relevant cellular phone network
is available.
The SOS button will flash and the message
Connecting call will appear in the multi-
function display to indicate receipt of the door
unlock command.
Once the vehicle is unlocked, a Response Center
specialist may attempt to establish voice contact
with the vehicle occupants.
If the tailgate lock was pressed for more than
20 seconds before door unlock authorization
was received by the Response Center, you must
wait 15 minutes before pressing the tailgate lock
again.
iWhen the anti-theft alarm stays on for more
than 30 seconds, a call is initiated automatically
to the Response Center. For more information,
see “Anti-theft systems” (
page 96).
Page 371 of 457
370 Practical hints
Unlocking/locking in an emergency
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey, open the driver’s door and the
tailgate using the mechanical key.Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of
arrow.
Slide the mechanical key2 out of the
housing.Unlocking the driver’s door
Insert the mechanical key into the
driver’s door lock cylinder until it stops.
Turn the mechanical key counterclock-
wise until the locking knob moves up.
The driver’s door is unlocked.
Remove the mechanical key.
Press lock cylinder and pull on door
handle to open the driver’s door.
iUnlocking the driver’s door and the tailgate
with the mechanical key will trigger the anti-theft
alarm system.
To cancel the alarm:
Press buttonŒ or‹ on the
SmartKey.
Insert the SmartKey in the starter switch.