2004 MERCEDES-BENZ SL55AMG Owner's Manual

64 Safety and SecurityOccupant safetyFront airbags
Driver and passenger airbags are de-
ployed:

in the event of a frontal impact


if impact exceeds a preset deployment
threshold


independently of the head-thorax air-
bags
The airbags will not deploy in impacts
which do not exceed the system’s deploy-
ment thresholds. You will then be protect-
ed by the fastened seat belts.The passenger airbag will only be deployed
if:


the passenger seat is occupied


the 7 indicator lamp on the glove
box is not lit (
page 72)


the impact exceeds a preset deploy-
ment threshold
1Driver airbag
2Passenger airbag
3KneebagKneebag
The kneebag is located on the driver-side
lower instrument panel. It is designed to
operate together with the driver airbag in
certain frontal impacts exceeding a preset
threshold. The kneebag operates best in
conjunction with a properly positioned and
fastened seat belt.
!Do not place objects heavier than 20
lbs (9 kg) on the front passenger seat.
This could cause the front airbag or the
head-thorax airbag on the front passen-
ger side to deploy in a crash which ex-
ceeds the system's deployment
threshold.

65 Safety and Security
Occupant safety
Head-thorax airbags
The head-thorax airbags are deployed:

on the impacted side of the vehicle


in impacts exceeding a preset deploy-
ment threshold


independently of the front airbags
The head-thorax airbags are not deployed
in impacts which do not exceed the sys-
tem’s deployment threshold.
The passenger head-thorax airbag will only
deploy if the system senses that the pas-
senger seat is occupied.
1Head-thorax airbag
Seat belts
When the engine is started, the seat belt
telltale < illuminates to remind you and
your passenger to fasten your seat belts. If
the driver’s seat belt is not fastened before
the engine is started, the seat belt
telltale< illuminates and a warning
chime sounds for approximately six sec-
onds when the engine is started.
The use of seat belts and infant and child
restraint systems is required by law in all
50 states, the District of Columbia, the
U.S. territories, and all Canadian provinc-
es. Even where this is not the case, all ve-
hicle occupants should have their seat
belts fastened whenever the vehicle is in
motion.
For information on fastening seat belts,
see “Fastening the seat belts” (
page 40).
iFor information on infants and children
traveling with you in the vehicle and re-
straint systems for infants and chil-
dren, see “Children in the vehicle”
(page 70).

66 Safety and SecurityOccupant safetyWarning!
G
Always fasten your seat belt before driving
off. Always make sure your passengers are
properly restrained, even pregnant women.
Failure to wear and properly fasten and po-
sition your seat belt greatly increases your
risk of injuries and their likely severity in an
accident. You and your passenger should al-
ways wear seat belts.
If you are ever in an accident, your injuries
can be considerably more severe without
your seat belt properly buckled. Without
your seat belt buckled, you are much more
likely to hit the interior of the vehicle or be
ejected from it. You can be seriously injured
or killed.
In the same crash, the possibility of injury or
death is lessened if you are properly wearing
your seat belt. Airbags can only protect as
they are designed if the occupants are prop-
erly wearing their seat belts (
page 59).
Warning!
G
Never ride in a moving vehicle with the seat
backrest in an excessively reclined position
as this can be dangerous. You could slide
under the seat belt in a collision. If you slide
under it, the belt would apply force at the ab-
domen or neck. This could cause serious or
even fatal injuries. The seat backrest and
seat belt provide the best restraint when the
wearer is in a nearly upright position and the
belt is properly positioned on the body.
Keep door storage compartments closed
while vehicle is in motion. Failure to do so
may cause the seat belt to catch at the rear
and prevent proper positioning of the seat
belt.
Warning!
G
Never let more people ride in the vehicle
than there are seat belts available. Be sure
everyone riding in the vehicle is correctly re-
strained with a separate seat belt. Never use
a seat belt for more than one person at a
time.

67 Safety and Security
Occupant safety
Warning!
G
Damaged seat belts or belts that were highly
stressed in an accident must be replaced
and their anchoring points must also be
checked.
Only use seat belts which have been ap-
proved by Mercedes-Benz.
Do not make any modifications to the seat
belts. This can lead to unintended activation
or to failure.
Do not bleach or dye seat belts as this may
severely weaken them. In a crash, they may
not be able to provide adequate protection.
Have all work carried out only by qualified
technicians. Contact an authorized
Mercedes-Benz Center.
Warning!
G
USE SEAT BELTS PROPERLY

Seat belts can only work when used
properly. Never wear seat belts in any
other way than as described in this sec-
tion, as that could result in serious inju-
ries in case of an accident.


Each occupant should wear their seat
belt at all times, because seat belts help
reduce the likelihood of and potential
severity of injuries in accidents, includ-
ing rollovers. The integrated restraint
system includes SRS (driver airbag, driv-
er-side kneebag, passenger airbag,
head-thorax airbags) and ETD (seat belt
emergency tensioning device). The sys-
tem is designed to enhance the protec-
tion offered to properly belted
occupants in certain frontal (front air-
bags, driver-side kneebag and ETD) and
side (head-thorax airbags and ETD) im-
pacts which exceed preset deployment
thresholds.


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.


68 Safety and SecurityOccupant safety
Emergency tensioning device (ETD),
seat belt force limiter
The seat belts are equipped with emergen-
cy tensioning devices, belt force limiters,
and automatic comfort-fit.
The ETD is designed to activate in the fol-
lowing cases when the seat belts are fas-
tened:

in frontal or rear-end impacts exceed-
ing a preset severity level


if the restraint systems are operational
and functioning correctly, see 1 in-
dicator lamp (
page 58).
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. Belt force limiters reduce
the force exerted by the seat belts on oc-
cupants during a crash.Automatic comfort-fit feature seat belt
The automatic comfort-fit feature reduces
the retracting force of the seat belts when
they are in normal use.


Never use a seat belt for more than one
person at a time. Do not fasten a seat
belt around a person and another per-
son 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, dashboard or on the seat. Always
keep both feet on the floor in front of the
seat.
Warning!
G
An emergency tensioning device (ETD) that
was activated must be replaced.
When disposing of the emergency tension-
ing device, our safety instructions must be
followed. These are available at your autho-
rized Mercedes-Benz Center.!Do not place objects heavier than
20 lbs (9 kg) on the front passenger
seat. This could cause the front or side
impact airbag on the passenger side to
deploy in a crash which exceeds the
system's deployment threshold.


69 Safety and Security
Occupant safety
Roll barThe roll bar raises automatically in an acci-
dent or in a critical driving situation. You
can also raise and lower the roll bar manu-
ally using the buttons provided.
The buttons for the roll bar are on the cen-
ter console under the roof switch.
1Lower roll bar
2Raise roll bar
The roll bar can be moved manually when
the ignition is switched on.Raising the roll bar

Lift the switch for the retractable hard-
top.

Press and hold button2 until the roll
bar is raised.
Warning!
G
This vehicle is a two occupant vehicle. The
rear storage area is not intended for use by
occupants and is not equipped for properly
seating or restraining occupants. Thus this
area should never be used by any persons.
Before operating the roll bar switch make
sure that the roll bar’s path is clear and no
persons are injured by the moving roll bar
due to inattention. Raising or lowering of the
roll bar could injure someone inadvertently
occupying the rear storage area.
For your own safety, we recommend to drive
with the roll bar raised if the outside temper-
ature is below +5°F (-15°C).!If the outside temperature falls below
+5°F (-15°C), the roll bar must be
raised manually using the buttons pro-
vided to avoid damaging the hydraulics.
iWhen the roll bar is raised automatical-
ly, you will hear a ratcheting sound.
Warning!
G
If the roll bar warning light

in the ta-
chometer remains lit after starting the en-
gine, there is a malfunction. In the display
you see the message
Raise the
roll-over bar
.
For safety reasons, drive only with the roll
bar upright until the malfunction is repaired.
Have your vehicle checked at an authorized
Mercedes-Benz Center.

70 Safety and SecurityOccupant safetyLowering the roll bar
If the roll bar was raised manually:
Lift the switch for the retractable hard-
top.

Press and hold button1 until the roll
bar is lowered.
If the roll bar was raised automatically:

Press and hold button2 until you hear
the roll bar lock into place.

Press and hold button1 until the roll
bar is lowered.
Children in the vehicle
If an infant or child is traveling with you in
the vehicle:

Secure the child using an infant or child
restraint appropriate to the age and
size of the child and recommended for
use by Mercedes-Benz.


Make sure the infant or child is proper-
ly secured by a belt at all times while
the vehicle is in motion.
Infant and child restraint seats and infor-
mation on choosing an appropriate re-
straint system can be obtained from any
Mercedes-Benz Center.Infant and child restraint systems
Only use a BabySmart
TM1
compatible child
restraint for the front passenger seat in
this vehicle.
We recommend all infants and children be
properly restrained at all times while the
vehicle is in motion.
The passenger lap-shoulder belt has a spe-
cial seat belt retractor for the secure fas-
tening of child restraints.
To fasten a child restraint follow child re-
straint instructions for mounting. Then pull
the shoulder belt out completely and let it
retract. During the seat belt retraction a
ratcheting sound can be heard to indicate
that the special seat belt retractor is acti-
vated. The belt is now locked. Push down
on child restraint to take up any slack.
To deactivate, release seat belt buckle and
let seat belt retract completely. The seat
belt can again be used in the usual man-
ner.
iIf you raised the roll bar manually using
the button, the roll bar will be automat-
ically lowered and then raised again
when you close and open the retract-
able hardtop.
1BabySmart
TM
is a trademark of Siemens
Automotive Corp.

71 Safety and Security
Occupant safety
Warning!
G
Never release the seat belt buckle while the
vehicle is in motion, since the special seat
belt retractor will be deactivated.!The use of infant or child restraints is
required by law in all 50 states, the Dis-
trict of Columbia, the U.S. territories,
and all Canadian provinces.
Infants and small children should be
seated in an appropriate infant or child
restraint system which is properly se-
cured by a lap-shoulder belt and that
complies with U.S. Federal Motor
Vehicle Safety Standard 213 and
Canadian Motor Vehicle Safety
Standard 213.
A statement by the child restraint man-
ufacturer of compliance with this stan-
dard can be found on the instruction
label on the restraint and in the instruc-
tion manual provided with the restraint.
When using any infant or child restraint
system, be sure to carefully read and
follow all manufacturer’s instructions
for installation and use.
Please read and observe warning labels
affixed to inside of vehicle and to infant
or child restraints.Warning!
G
Children 12 years old and under must never
ride in this vehicle, except in a
Mercedes-Benz authorized BabySmart
TM
compatible child seat, which operates with
the BabySmart
TM system installed in the ve-
hicle to deactivate the passenger front air-
bag when it is properly installed. Otherwise
they will be struck by the airbag when it in-
flates in a crash. If this happens, serious or
fatal injury will result.
Infants and small children must be seated in
an appropriate BabySmart
TM compatible in-
fant or child restraint system, which is prop-
erly secured with the vehicle’s seat belt,
fully in accordance with the child seat
manufacturer’s instructions.
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.
Adjust the passenger seat as far as possible
rearward from the dashboard when the seat
is occupied.