62 Safety and SecurityOccupant safety
Emergency tensioning device, seat belt
force limiter
The front seat belts and the outboard pas-
senger seats belts are equipped with emer-
gency tensioning devices.
The ETD is designed to activate only when
the seat belt is fastened and in the follow-
ing cases:
in frontal or rear-end impacts exceed-
ing a preset severity level
if the restraint systems are operational
and functioning correctly, see 1
indicator lamp (
page 54)
In an impact, emergency tensioning devic-
es remove slack from the belts in such a
way that the seat belts fit more snugly
against the body.
Never wear the shoulder belt under your
arm, against your neck or off your shoul-
der. In a crash, your body would move
too far forward. That would increase the
chance of head and neck injuries. The
belt would also apply too much force to
the ribs or abdomen, which could se-
verely injure internal organs such as
your liver or spleen.
Never wear belts over rigid or breakable
objects in or on your clothing, such as
eyeglasses, pens, keys, etc., as these
might cause injuries.
Position the lap belt as low as possible
on your hips and not across the abdo-
men. If the belt is positioned across your
abdomen, it could cause serious injuries
in a crash.
Each seat belt should never be used for
more than one person at a time. Do not
fasten a seat belt around a person and
another person or other objects.
Belts should not be worn twisted. In a
crash, you wouldn’t have the full width
of the belt to manage impact forces. The
twisted belt against your body could
cause injuries.
Pregnant women should also use a
lap-shoulder belt. The lap belt portion
should be positioned as low as possible
on the hips to avoid any possible pres-
sure on the abdomen.
Never place your feet on the instrument
panel or on the seat. Always keep both
feet on the floor in front of the seat.
65 Safety and Security
Occupant safety
BabySmart
TM
airbag deactivation
system
Special BabySmart
TM1
compatible child
seats, designed for use with the Mer-
cedes-Benz system and available at any
authorized Mercedes-Benz Light Truck
Center are required for use with the
BabySmart
TM airbag deactivation system.
With the special child seat properly in-
stalled, the passenger front airbag will not
deploy.
The
7
indicator lamp located in the
center console will be illuminated, except
with the key removed or in the starter
switch position0.
Infants and small children should never
share a seat belt with another occupant.
During an accident, they could be crushed
between the occupant and seat belt.
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and
the child is not properly secured in the child
restraint.
Warning!
G
Children too big for child restraint systems
must ride in back seats using regular seat
belts. Position shoulder belt across chest
and shoulder, not face or neck. A booster
seat may be necessary to achieve proper
belt positioning for children from 41 lbs. un-
til they reach a height where a lap / shoulder
belt fits properly without a booster.
When the child restraint is not in use, re-
m o v e i t f r o m t h e v e h i c l e o r s e c u r e i t w i t h t h e
seat belt to prevent the child restraint from
becoming a projectile in the event of an ac-
cident.
Do not leave children unattended in the ve-
hicle, even if the children are secured in a
child restraint system. Unsupervised chil-
dren in a child restraint system may use ve-
hicle equipment and may cause serious
personal injury.
1BabySmartTM
is a trademark of Siemens Automo-
tive Corp.
66 Safety and SecurityOccupant safetySelf-test BabySmart
TM
without special
child seat installed
After turning key in starter switch to
position1 or2, the
7
indicator lamp
located in the center console lights up for
approximately 6 seconds and then goes
out.
If the indicator lamp should not come on or
is continuously lit, the system is not func-
tioning. You must see an authorized Mer-
cedes-Benz Light Truck Center before
seating any child on the front passenger
seat.
More information can be found in the
“Practical hints” section (page 244).
Warning!
G
The BabySmart
TM airbag deactivation sys-
tem will ONLY work with a special child seat
designed to operate with it. It will not work
with child seats which are not BabySmart
TM
compatible.
Never place anything between seat cushion
and child seat (e.g. pillow), since it reduces
the effectiveness of the deactivation sys-
tem. The bottom of the child seat must
make full contact with the passenger seat
cushion. An incorrectly mounted child seat
could cause injuries to the child in case of an
accident, instead of protecting the child.
Follow the manufacturer’s instructions for
installation of special child seats.
When using a BabySmart
TM compatible
child seat on the front passenger side seat,
the front passenger airbag will not deploy
only if the
7
indicator lamp remains il-
luminated.
Warning!
G
Please be sure to check the indicator every
time you use the special system child seat.
Should the light go out while the restraint is
installed, please check installation. If the
light remains out, do not use the
BabySmart
TM restraint to transport children
on the passenger seat until the system has
been repaired.
Warning!
G
Do not place powered-on laptops, cell
phones and like electronic devices on the
front passenger seat. Signals from such de-
vices may interfere with the BabySmart
TM
system. Such signal interference may cause
the
7
indicator lamp not to come on
during self-test or be continuously lit, indi-
cating that the system is not functioning.
69 Safety and Security
Occupant safety
Blocking rear door window operation
1Switch for rear door window override
Slide the switch to the right.
The
N
symbol becomes visible. The
rear windows can no longer be operat-
ed using the switch in the rear doors.For more information on power windows,
see the “Controls in detail” section
(
page 158).Warning!
G
Activate the override switch in the rear when
children are riding in the car. The children
could otherwise injure themselves, e.g. by
becoming trapped in the window opening.
When leaving the vehicle, always remove the
key from the starter switch, and lock the ve-
hicle. Do not leave children unattended in
the vehicle, or with access to an unlocked
vehicle. Unsupervised use of vehicle equip-
ment can cause an accident and/or serious
personal injury.
70 Safety and SecurityPanic alarm
Panic alarm1Â
buttonAn audible alarm and blinking turn signal
lamps will operate for approximately
2½ minutes.
To activate: Press and hold button1 for
at least one second.
To deactivate: Press button1 again or
insert key in starter switch.
iFor operation in the USA only: This de-
vice complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
This device may not cause harmful
interference, and
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.
72 Safety and SecurityDriving and safety systemsContinuous steady brake pedal pressure
yields the advantages provided by the ABS,
namely braking power and the ability to
steer the vehicle.
On slippery road surfaces, the ABS will re-
spond even with light brake pressure. The
pulsating brake pedal can be an indication
of hazardous road conditions and func-
tions as a reminder to take extra care while
driving.
The
-
warning lamp in the instrument
cluster (page 24) lights up when you
turn the key to position 2. It goes out when
the engine is running.Braking
At the instant one of the wheels is about to
lock up, a slight pulsation can be felt in the
brake pedal, indicating that the ABS is in
the regulating mode.
Keep firm and steady pressure on the
brake pedal while experiencing the pul-
sation.
Emergency brake maneuver
Keep continuous full pressure on the
brake pedal.LOW RANGE– ABS
During off-road driving a special low range
system for the antilock brake system (ABS)
is operational with transfer case in position
LOW (
page 141).
An improved braking action (dig-in effect)
is obtained for vehicle speeds up to
37 mph (60 km/h) through a change in the
ABS control function.
More information can be found in the
“Practical hints” section (
page 240).
iTo alert following vehicles to slippery
road conditions you discover, operate
your hazard warning flashers as appro-
priate.
iIf the ABS is malfunctioning, the BAS,
EBB, ESP and 4-ETS are also switched
off.
Normal driving and braking functions
are still available.
74 Safety and SecurityDriving and safety systems4-ETS
The 4-ETS improves vehicle’s ability to uti-
lize available traction, especially under
slippery road conditions. The brakes are
applied to the spinning wheel and power is
allowed to flow to the wheel(s) with trac-
tion.
The 4-ETS function is available between ve-
hicle speeds of 0 mph (km/h) and 37 mph
(60 km/h).
The ESP warning lamp
v
in the instru-
ment cluster (
page 24) lights up when
you turn the key to position2. It goes out
when the engine is running.
The ESP warning lamp
v
starts to flash
at any vehicle speed, as soon as the tires
lose traction and the wheels begin to spin.More information can be found in the
“Practical hints” section (
page 238).
Warning!
G
When you see the ESP warning lamp
v
flashing in the speedometer dial, 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 result-
ing from excessive speed.
!The engine must be shut off when
the parking brake is being tested on
a brake test dynamometer.
the vehicle is being towed with one
axle raised.
Otherwise, the 4-ETS will engage the
brakes and seriously damage the brake
system.
75 Safety and Security
Driving and safety systems
EBB
The EBB enhances braking effectiveness
by allowing the rear brakes to supply a
greater proportion of the braking effort in
straight line braking circumstances with-
out a loss of vehicle stability.
ESP
The Electronic Stability Program (ESP)
monitors the vehicle's traction (force of
adhesive friction between the tires and the
road surface) and handling.
The ESP recognizes when a wheel is spin-
ning or if the vehicle starts to skid. By ap-
plying brakes to the appropriate wheel and
by limiting engine output, the ESP works to
stabilize the vehicle.
The ESP warning lamp
v
in the instru-
ment cluster (
page 24) flashes when the
ESP is engaged.
The ESP warning lamp
v
l i g h t s u p w h e n
you turn the key to position2. It goes out
when the engine is running.
Warning!
G
Never switch off the ESP when you see the
ESP warning lamp
v
flashing in the
speedometer dial. In this case proceed 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 ESP cannot prevent accidents resulting
from excessive speed.