Page 60 of 417
59 Getting started
Parking and locking
Press the seat belt release button3
(
page 45).
Allow the retractor to completely re-
wind the seat belt by guiding the latch
plate.
After exiting the vehicle, press the lock
button‹ on the SmartKey
(
page 34).
With the hood, tailgate and all doors
closed, all turn signal lamps flash three
times. The locking knobs on the doors
move down.
The anti-theft alarm system is armed.For more information, see “Locking and
unlocking” (
page 92).
i
The SmartKey can only be pulled out
when:
it has been turned to position0 in
the starter switch
the gear selector lever for the auto-
matic transmission is in positionP
i
With the SmartKey removed and the
driver’s door open, a warning sounds if
the vehicle’s exterior lamps are not
switched off.
Warning!G
To prevent possible personal injury, always
keep hands and fingers away from the door
openings when closing the doors. Be espe-
cially careful when small children are
around.
Before closing doors, make sure there is no
possibility of someone getting caught in a
door during closing.
Warning!G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment may cause
an accident and/or serious personal injury.
Page 79 of 417
78 Safety and Security
Occupant safety
Blocking rear door window operation
The override switch is located in the
driver’s door.
1Override switchActivating override switch
Slide override switch1 to the right.
A dot becomes visible. The functions in
the rear are disabled.Deactivating override switchSlide override switch1 to the left.
The functions in the rear are enabled
again.
For more information on power windows,
see “Power windows” (
page 175). i
Operation of the rear windows with the
switches located in the driver’s door is
still possible.
Warning!G
Activate the override switch when children
are riding in the back seats of the vehicle.
The children may otherwise injure them-
selves, e.g. by becoming trapped in the win-
dow opening.
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment can cause an
accident and/or serious personal injury.
Page 89 of 417
88 Safety and Security
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating
Removing the SmartKey from the starter
switch activates the immobilizer.
Deactivating
Inserting the SmartKey in the starter
switch deactivates the immobilizer.Anti-theft alarm
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens
a door
the tailgate
the hood
The alarm will stay on even if the activating
element (a door, for example) is immedi-
ately closed.
The alarm system will also be triggered
when
someone attempts to raise the vehicle
the vehicle is opened with the mechan-
ical key
someone opens a door from the inside
someone opens the tailgate from the
insideArming the alarm system
The alarm system is armed after locking
the vehicle with the SmartKey. The turn
signal lamps blink three times to indicate
that the alarm system is being armed.
A red lamp in the tow-away alarm switch
begins to blink after arming the alarm
system (
page 28).
i
In case the engine cannot be started
(yet the vehicle’s battery is charged),
the system is not operational. Contact
an authorized Mercedes-Benz Light
Truck Center or call
1-800-FOR-MERCedes (in the USA), or
1-800-387-0100 (in Canada).
i
If 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, and that necessary cellular
service and GPS coverage are avail-
able.
Page 90 of 417
89 Safety and Security
Anti-theft systems
Disarming the alarm system
The alarm system is disarmed when you
unlock your vehicle with the SmartKey. The
turn signal lamps blink once to indicate
that the alarm system is disarmed.Canceling the alarm
To cancel the alarm:
Press the Œ or ‹ button on the
SmartKey.
or
Insert the SmartKey in the starter
switch.
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.i
If the turn signal lamps do not blink
three times, one of the following ele-
ments may not be properly closed:
a door
the tailgate
the hood
Close the respective element and lock
the vehicle again.
i
The alarm system will rearm automati-
cally after approximately 40 seconds if
neither a door nor the tailgate was
opened.
i
The tow-away protection alarm is trig-
gered, for example, if the vehicle is lift-
ed on one side.
If the alarm stays on for more than
20 seconds, an emergency call is initi-
ated automatically by the Tele Aid sys-
tem provided Tele Aid service was
subscribed to and properly activated,
and that necessary cellular service and
GPS coverage are available.
Page 93 of 417
92 Controls in detail
In the “Controls in detail” section you will
find detailed information on how to oper-
ate the equipment installed in your vehicle.
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 tailgate
the fuel filler flap
SmartKey with remote control
1‹ Lock button
2Locking tab for mechanical key
3ΠUnlock button
4Battery check lamp
5Â Panic button (
page 79)
i
You can also open and close the power
windows (
page 176) and tilt/sliding
sunroof (
page 179) using the
SmartKey.
Page 94 of 417
93 Controls in detail
Locking and unlocking
!
To prevent possible malfunction, avoid
exposing the SmartKey to high levels of
electromagnetic radiation.
Warning!G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. It is possible
for children to open a locked door from the
inside, which could result in an accident
and/or serious personal injury.
i
USA only:
This device complies with Part 15 of
the FCC Rules. Operation is subject to
the following two conditions:
(1) This device may not cause harmful
interference, and
(2) this device must accept any inter-
ference received, including interfer-
ence that may cause undesired
operation.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.
i
Canada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject
to the following two conditions:
(1) This device may not cause interfer-
ence, and
(2) this device must accept any inter-
ference received, including interfer-
ence that may cause undesired
operation of the device.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.
Page 95 of 417
94 Controls in detail
Locking and unlocking
Factory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once. The
locking knobs on the doors move up.
The anti-theft alarm system is dis-
armed.
The vehicle will lock again automatically
within approximately 40 seconds of un-
locking if:
neither door nor tailgate is opened
the SmartKey is not inserted in the
starter switch
the central locking switch is not
activatedGlobal locking
Press button‹.
With the hood, tailgate and all doors
closed, all turn signal lamps flash three
times. The locking knobs on 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 five seconds
until battery check lamp4 blinks
twice.
The SmartKey will then function as
follows:Unlocking the driver’s door and fuel
filler flap
Press buttonΠonce.
All turn signal lamps flash once. The
locking knobs on the doors move up.
The anti-theft alarm system is
disarmed.
Global unlocking
Press buttonΠtwice.
All turn signal lamps flash once. The
locking knobs on the doors move up.
The anti-theft alarm system is
disarmed.
Page 96 of 417
95 Controls in detail
Locking and unlocking
Global locking
Press button‹.
With the hood, tailgate and all doors
closed, all turn signal lamps flash three
times. The locking knobs on the doors
move down.
The anti-theft alarm system is armed.
Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp4 blinks
twice.Checking the batteries
Press button‹ orŒ.
Battery check lamp4 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.
!
If you can no longer lock or unlock the
vehicle with the SmartKey, then the
batteries in the SmartKey are dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.
Check the batteries in the
SmartKey (
page 95) and replace
them if necessary (
page 333).
Use the mechanical key to unlock
the driver’s door (
page 327).
Have the vehicle battery and the
battery connections checked by an
authorized Mercedes-Benz Light
Truck Center (
page 353).
Use the mechanical key to lock the
driver’s door and the tailgate
(
page 328).
If the SmartKey is malfunctioning, con-
tact an authorized Mercedes-Benz
Light Truck Center.
!
If battery check lamp4 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
page 333).
You can obtain the required batteries
at any authorized Mercedes-Benz Light
Truck Center.
i
If the batteries are checked within sig-
nal range of the vehicle, pressing the
button‹ orŒ will lock or unlock
the vehicle accordingly.