Page 98 of 457

97
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.
1 Tow-away alarm off switch
2 Indicator lamp
Switch off the ignition and remove the
SmartKey from the starter switch.
Press switch 1.
Indicator lamp 2 comes on briefly.
Exit and lock the vehicle with the
SmartKey (
page 65).
Canceling the tow-away alarm
Press the Œ 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.
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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 button
Œ only unlocks the driver’s
door and the fuel filler flap.
Press and hold buttons Œ and‹
simultaneously for about 5 seconds
until battery check lamp 5
(
page 100) flashes twice.
The SmartKey will then function as
follows:
Unlocking driver’s do or and fuel filler
flap
Press button Œ 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/slidin g sunroof using the
SmartKey, see “Summer opening feature”
(
page 193) and see “Convenience closing fea-
ture” (
page 194).
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103
Controls in detail
Locking and unlocking
Global unlocking
Press button
Œ 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 buttons
Œ and‹
simultaneously for about 6 seconds
until battery check lamp 5
(
page 100) flashes twice.
Checking batteries in the SmartKey
Press button ‹ orŒ .
Battery check lamp 5 (
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 lamp 5 does not come on
briefly during check, the SmartKey batteries are
discharged.
Replace the batteries (
page 374).
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 ‹
or Œ will lock or unlock the vehicle
accordingly.
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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.1 Locking knob
2 Inside door handle Front doors
Pull on inside door handle
2 on the
respective front door to open door.
If the door was locked, locking knob 1
will move up.
Rear doors
Pull up locking knob 1 on the
respective rear door to unlock door.
Pull on inside door handle 2 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 button Œ 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.
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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
indicator 1.
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 361).
Warning!G
If the transfer case is
in neutral, transmis-
sion position P will not hold vehicle. The
parking brake must be applied to hold
vehicle in place.
iIf the SmartKey is in starter switch
position 0 or 1, an alarm will sound if the
transfer case is in neutra l and the driver’s door is
opened.
Engage the transfer case to gear position HIGH
or LOW.
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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 he adunit or on the
multifunction steering wheel. To raise, turn
the rotary volume control on the COMAND
system headunit clockwise or press
button æ on the multifunction steering
wheel. To lower, turn the rotary volume
control on the COMAND system headunit
counterclockwise or press button ç 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 pl acing 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.
W463.boo Seite 229 Montag, 19 . November 2007 8:41 08
Page 369 of 457
368 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
1 Mechanical key locking tab
2 Mechanical key
Move locking tab 1 in direction of
arrow.
Slide the mechanical key 2 out of the
housing. Unlocking the driver’s door
Insert the mechanical key into the
driver’s door lock cy
linder 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 button Œ or‹ on the
SmartKey.
Insert the SmartKey in the starter switch.
W463.boo Seite 368 Montag, 19 . November 2007 8:41 08
Page 371 of 457
370 Practical hints
Unlocking/locking in an emergency
Close the driver’s door.
Slide the mechanical key out of the
SmartKey (
page 368).
Insert the mechanical key into the
driver’s door lock cylinder until it stops.
Turn the mechanical key clockwise.
The vehicle is locked.
Check if the tailgate is locked. If
necessary lock the tailgate with the
mechanical key.
Fuel filler flap
The emergency release is located on the
passenger side of the cargo compartment
behind the rear trim panel.1 Edge protection
2 Rear trim panel
Open the tailgate.
Remove edge protection 1 from the
door pillar.
Remove rear trim panel 2. 3
Release strap
Pull release strap 3 upwards.
The fuel filler flap is unlocked.
Open the fuel filler flap (page 264).
iThis procedure does not arm the anti-theft
alarm system, nor does it lock the fuel filler flap.
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