105 Safety and Security
Driving safety systems
Switching on the ESP®
Press ESP® switch1.
The ESP
® warning lampv in the
instrument cluster goes out.
You are now again in normal driving
mode with the ESP
® switched on.
For more information, see the “Practical
hints” section (
page 420).
EBP
The EBP enhances braking effectiveness
by allowing the rear brakes to supply a
greater proportion of the braking effort
without a loss of vehicle stability.
For more information, see the “Practical
hints” section (
page 422) and
(
page 453).
Warning!G
When the ESP® warning lampv is
illuminated continuously, the ESP® is
switched off or is not operational due to a
malfunction.
Adapt your speed and driving to the prevail-
ing road conditions and to the non-operating
status of the ESP
®.
!Avoid spinning of a drive wheel for an
extended period of time with the ESP® switched
off. This may cause serious damage to the
drivetrain which is not covered by the
Mercedes-Benz Limited Warranty.
Warning!G
If the EBP is malfunctioning, the brake sys-
tem is still functioning. However, the rear
wheels may lock during hard braking, caus-
ing you to lose control over the vehicle and
possibly causing an accident. Adjust your
driving style to the non-operating status of
the EBP.
106 Safety and Security
Driving safety systems
4-ETS
The 4-Electronic Traction System (4-ETS)
improves the vehicle’s ability to utilize
available traction, especially under slip-
pery road conditions. The brakes are ap-
plied to the spinning wheel and power is
transferred to the wheel(s) with traction.
The ESP
® warning lampvin the instru-
ment cluster starts to flash at any vehicle
speed, as soon as a tire loses traction and
the wheel begins to spin.
For more information, see the “Practical
hints” section (
page 420) and
(
page 433).
Warning!G
When you see the ESP® warning lampv
flashing in the instrument cluster, then pro-
ceed as follows:
While driving off, apply as little throttle
as possible.
While driving, ease up on the accelera-
tor.
Adapt your speed and driving style to
the prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid.
The 4-ETS cannot prevent accidents resul-
ting from excessive speed.
!Operational or performance test must only
be conducted on a two-axle dynamometer. If
such tests are necessary, contact an authorized
Mercedes-Benz Light Truck Center. You could
otherwise seriously damage the brake system or
the transfer case which is not covered by the
Mercedes-Benz Limited Warranty.
!Because the ESP® operates automatically,
the engine and ignition must be shut off
(SmartKey in starter switch position0 or1 or
KEYLESS-GO* start/stop button in
position0or1) when testing the brakes on a
brake test dynamometer and such testing should
be no longer than 10 seconds.
Active braking action through ESP
® may other-
wise seriously damage the brake system which is
not covered by the Mercedes-Benz Limited
Warranty.
iIf the yellow ESP® warning lampv
comes on while driving, the 4-ETS is being
switched off temporarily to prevent overheating
of the drive wheel brakes. In addition, the
message
ABS, ESP unavailable See
Operator’s Manual
appears in the
multifunction display.
108 Safety and Security
Anti-theft systems
Arming the alarm system
The alarm system is armed after you have
locked the vehicle with the SmartKey or
SmartKey with KEYLESS-GO*.
The alarm system indicator lamp is located
to the lower left of the hazard warning
flasher.
1Alarm system indicator lamp
Make sure all doors and the tailgate are
closed.
Lock the vehicle (page 68).
The turn signal lamps flash three times
to indicate that the vehicle is locked.
The alarm system is armed within ap-
proximately 10 seconds. Alarm system
indicator lamp 1 flashes.Disarming the alarm system
Unlock the vehicle (page 38).
The turn signal lamps flash once to
indicate that the vehicle is disarmed.
Alarm system indicator lamp 1 goes
out.
iIf the alarm stays on for more than
30 seconds, a call to the Response Center is
initiated automatically by the Tele Aid* system
(
page 330) provided that the Tele Aid* service
was subscribed to and properly activated, and
that necessary cellular service and GPS cover-
age are available.
iIf the turn signal lamps do not flash three
times, one of the following elements may not be
properly closed:
a door
the tailgate
Close the respective element and lock the
vehicle again.
iThe alarm system will rearm automatically
again after approximately 40 seconds if neither a
door nor the tailgate is opened.
113 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 reactivate the anti-theft alarm system
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
activated
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.
!To prevent possible malfunction, avoid ex-
posing the SmartKey to high levels of electro-
magnetic radiation.
iUSA 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 interference
received, including interference that may
cause undesired operation.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
iCanada only:
This device complies with RSS-210 of Industry
Canada. Operation is subject to the following
two conditions:
(1) This device may not cause interference, and
(2) this device must accept any interference
received, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
iYou can also open and close the power win-
dows, the tilt/sliding sunroof*, or the tilt/sliding
panel* using the SmartKey, see “Summer open-
ing feature” (
page 254) and “Convenience
closing feature” (
page 256).
116 Controls in detail
Locking and unlocking
SmartKey with KEYLESS-GO*
Vehicles equipped with KEYLESS-GO come
with two SmartKeys with KEYLESS-GO,
each with remote control and a removable
mechanical key.
The locking tabs for the mechanical key
portion of the two SmartKeys with
KEYLESS-GO are a different color to help
distinguish each SmartKey with
KEYLESS-GO unit.
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked when you grasp an outside door
handle.
If the SmartKey with KEYLESS-GO is valid,
your vehicle unlocks
the doors
the tailgate
the fuel filler flap
SmartKey with KEYLESS-GO*
1‹ Lock button
2Š Unlock button* for tailgate
3Locking tab for mechanical key
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 99)
Warning!G
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO* with you and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of
vehicle equipment may cause an accident
and/or serious personal injury.
!To prevent possible malfunction, avoid
exposing the SmartKey with KEYLESS-GO to high
levels of electromagnetic radiation.
iUSA 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 interfer-
ence, and
(2) this device must accept any interference
received, including interference that may
cause undesired operation.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
124 Controls in detail
Locking and unlocking
Lift handle 1 in direction of arrow3.
The tailgate is released and can be
opened manually.Opening the tailgate from the inside
electrically*
In vehicles with power tailgate* you can
open the tailgate from the inside if the
vehicle is stationary.
A minimum height clearance of
7.2 ft (2.20 m) is required to open the
tailgate.
The switch is located on the door control
panel.
1Remote tailgate switch with indicator
lampPull remote tailgate switch1 until
tailgate begins to open.
The tailgate opens. The indicator lamp
in the remote tailgate switch comes on
and remains lit until the tailgate is
closed. While the tailgate is opening, an
acoustic signal sounds.
iIf you do not open the tailgate within a few
seconds, the tailgate lock will automatically en-
gage again. Additionally, the tailgate will relock
automatically, if the vehicle was locked when the
tailgate was released from the inside.
If the tailgate lock does not engage automatically
and, if applicable, the tailgate does not relock
after a few seconds, you have to close the
tailgate manually (
page 125).
Warning!G
Only drive with the tailgate closed as,
among other dangers such as blocked
visibility, exhaust fumes may enter the
vehicle interior.
Warning!G
Maintain sight of the area around the rear of
the vehicle while operating the tailgate with
the door-mounted remote tailgate switch or
with the Šbutton on the SmartKey or
SmartKey with KEYLESS-GO*. Monitor the
opening procedure carefully to make sure
no one is in danger of being injured.
To interrupt the opening procedure, press or
pull the door-mounted remote tailgate
switch or press the Šbutton on the
SmartKey or SmartKey with KEYLESS-GO*.
125 Controls in detail
Locking and unlocking
Limiting opening height of tailgate*
Vehicles with power tailgate*:
The tailgate opening height can be limited
when transporting goods on a roof rack*
(e.g. presence of an MB sport luggage con-
tainer*). When activated, the tailgate
opens to approximately 6.4 ft (1.95 m).
Activate the limiting opening height of
tailgate using the control system
(
page 189).
Closing the tailgate
Closing the tailgate from the inside
electrically*
In vehicles with power tailgate* you can
close the tailgate from the inside using the
remote tailgate switch.
Press remote tailgate switch1
(
page 124) until tailgate begins to
close.
The tailgate closes. The indicator lamp
in the remote tailgate switch goes out.
While the tailgate is closing an acoustic
signal sounds.
To interrupt the closing procedure:
Press or pull remote tailgate switch1
(
page 124).
!The tailgate swings open upwards automat-
ically. Always make sure there is sufficient over-
head clearance. To stop the opening procedure,
press or pull remote tailgate switch1 or press
theŠ button on the SmartKey or SmartKey
with KEYLESS-GO*. The tailgate stops moving.
iThe tailgate can also be opened using
theŠ button on the SmartKey (
page 115)
or SmartKey with KEYLESS-GO* (
page 121).
Warning!G
Maintain sight of the area around the rear of
the vehicle while operating the tailgate with
the door mounted switch. Monitor the
closing procedure carefully to make sure no
one is in danger of being injured.
To interrupt the closing procedure, press or
pull the door mounted remote tailgate
switch.
Even with the SmartKey or the SmartKey
with KEYLESS-GO* removed from the
starter switch or the SmartKey with
KEYLESS-GO* removed from the vehicle,
the remote tailgate switch can be operated.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. Unsupervised use of vehicle equip-
ment may cause an accident and/or serious
personal injury.
126 Controls in detail
Locking and unlocking
If the tailgate comes into contact with an
object while closing (e.g. luggage that has
been piled too high) the closing procedure
is stopped and the tailgate reopens.Closing the tailgate from the outside
manually
1Handle
Lower tailgate by pulling firmly on
handle1.
Close tailgate with hands placed flat
on it.
Once the tailgate touches the latch,
the tailgate will pull itself shut automat-
ically.
Warning!G
Only drive with the tailgate closed as,
among other dangers such as blocked
visibility, exhaust fumes may enter the
vehicle interior.
Warning!G
To prevent possible personal injury, always
keep hands and fingers away from the cargo
compartment opening when closing the
tailgate. Be especially careful when small
children are around.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
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. Unsupervised use of
vehicle equipment may cause an accident
and/or serious personal injury.
Warning!G
Only drive with the tailgate closed as,
among other dangers such as blocked
visibility, exhaust fumes may enter the
vehicle interior.