2005 MERCEDES-BENZ SLK350 indicator

62 Safety and SecurityOccupant safetyIn this section you will learn the most im-
portant facts about the restraint systems
of the vehicle.
The restraint systems are

Seat belts


Emergency tensioning device (ETD)


Air bags


Child seats


Child seat recognition
As independent systems, their protective
effects work in conjunction with each oth-
er.The1indicator lamp in the speedome-
ter dial (
page 24) comes on


for about four seconds when you turn
the SmartKey in the starter switch to
position1. It then goes out briefly,
comes on again and remains lit until
you start the engine.


for about four seconds when you start
the engine by turning the SmartKey.The1indicator lamp goes out shortly
after you start the engine. This shows that
the restraint systems are operational.
A malfunction in the system has been de-
tected if the1indicator lamp


fails to extinguish after approximately
four seconds with the SmartKey in the
starter switch position1


does not come on at all


comes on after the engine was started


comes on while driving
For safety reasons, we strongly recom-
mend that you visit an authorized
Mercedes-Benz Center immediately to
have the system checked.
For more information, see “Practical hints”
(
page 346).
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 73).
iThe1indicator lamp remains lit if
the SmartKey is turned to position2
and left there. The indicator lamp will
go out when you start the engine.

63 Safety and Security
Occupant safety
Air bags
Warning!
G
In the event that the
1
indicator lamp
comes on during driving or does not come
on at all, the SRS self-check has detected a
malfunction. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Center immediately to have
the system checked; otherwise the SRS may
not be activated when needed in an acci-
dent, which could result in serious or fatal
injury, or it might deploy unexpectedly and
unnecessarily which could also result in
injury.
In addition, improper work on the SRS cre-
ates a risk of rendering the SRS inoperative
or causing unintended air bag deployment.
Work on the SRS must therefore only be per-
formed by qualified technicians. Contact an
authorized Mercedes-Benz Center.
Warning!
G
Air bags are designed to reduce the poten-
tial of injury in certain frontal impacts (front
air bags, kneebags), or side impacts
(head-thorax air bags) which may cause sig-
nificant injuries. However, no system avail-
able today can totally eliminate injuries and
fatalities.
The activation of the air bags temporarily re-
leases a small amount of dust from the
air bags. This dust, however, is neither inju-
rious to your health, nor does it indicate a
fire in the vehicle. The dust might cause
some temporary breathing difficulty for peo-
ple with asthma or other breathing trouble.
To avoid this, you may wish to get out of the
vehicle as soon as it is safe to do so. If you
have any breathing difficulty but cannot get
out of the vehicle after the air bag inflates,
then get fresh air by opening a window or
door.
Warning!
G
To reduce the risk of injury when the front
air bags inflate, it is very important for the
driver and passenger to always be in a prop-
erly seated position and to wear their seat
belts.
For maximum protection in the event of a
collision always be in normal seated position
with your back against the backrest. Fasten
your seat belt and ensure it is properly posi-
tioned on your body.
Since the air bag inflates with considerable
speed and force, a proper seating and hands
on steering wheel position will help to keep
you at a safe distance from the air bag. Oc-
cupants who are unbelted, out of position or
too close to the air bag can be seriously in-
jured by an air bag as it inflates with great
force in the blink of an eye:

Sit properly belted in a nearly upright
position with your back against the seat
backrest.


68 Safety and SecurityOccupant safetyFront air bags
1Driver’s air bag
2Passenger air bag
3Kneebag (passenger side)
4Kneebag (driver’s side)Driver and passenger air bags are de-
ployed


in the event of certain frontal impacts


if impact exceeds a preset deployment
threshold


independently of the head-thorax
air bags
The air bags 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 air bag will only be de-
ployed if


the passenger seat is occupied


the 75indicator lamp in the
center console is not lit (
page 75)


the impact exceeds a preset deploy-
ment thresholdKneebags
The driver-side kneebag is located on the
driver’s side lower instrument panel. The
passenger-side kneebag is located on the
passenger side below the glove box. They
are designed to operate together with the
air bags in certain frontal impacts exceed-
ing a preset threshold. The kneebags oper-
ate best in conjunction with properly
positioned and fastened seat belts.
!Do not place objects heavier than
20 lbs (9 kg) on the passenger seat.
This could cause the front air bag or
head-thorax air bag on the passenger
side to deploy in a crash which exceeds
the system’s deployment threshold.

72 Safety and SecurityOccupant safetyEmergency tensioning device (ETD),
seat belt force limiter
The seat belts are equipped with
emergency tensioning devices (ETDs) and
seat belt force limiters.
The ETD is designed to activate in the fol-
lowing cases:

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


if the restraint systems are operational
and functioning correctly, see
“1indicator lamp” (
page 62).In an impact emergency tensioning
devices 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 occupants during a crash.
iThe ETDs for the seats will only activate
if the respective seat belt is fastened
(latch plate properly inserted into buck-
le).
Warning!
G
An emergency tensioning device (ETD) that
was activated must be replaced.
When scrapping the emergency tensioning
device, our safety instructions must be fol-
lowed. These are available at your autho-
rized Mercedes-Benz Center.
!Do not place objects heavier than
20 lbs (9 kg) on the passenger seat.
This could cause the front air bag or
head-thorax air bag on the passenger
side and, with the seat belt fastened to
secure the object, the ETD to deploy in
a crash which exceeds the system’s
deployment threshold.

75 Safety and Security
Occupant safety
BabySmart
TM1
air bag deactivation
system
175indicator lamp
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.
Children too big for child restraint systems
should use regular seat belts. Position the
shoulder belt across chest and shoulder, not
face or neck. A booster seat may be neces-
sary to achieve proper belt positioning for
children from 41 lbs until they reach a
height where a lap/shoulder belt fits proper-
ly without a booster.
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.
When the child restraint is not in use, re-
move it from the vehicle or secure it with the
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.
1BabySmart
TM is a trademark of Siemens
Automotive Corp.

76 Safety and SecurityOccupant safetySpecial BabySmart
TM1
compatible child
seats, designed for use with the
Mercedes-Benz system and available at
any authorized Mercedes-Benz Center are
required for use with the BabySmart
TM
air bag deactivation system. With the spe-
cial child seat properly installed, the pas-
senger front air bag will not deploy.
The 75indicator lamp1 will be
illuminated, except with the SmartKey re-
moved or in starter switch position0.Self-test BabySmart
TM without special
child seat installed
After turning the SmartKey in the starter
switch to position1or2, the
75indicator lamp1 comes on
for approximately six seconds and then
goes out.
If the 75indicator lamp should
not come on or is continuously lit, the sys-
tem is not functioning. You must see an au-
thorized Mercedes-Benz Center before
seating any child on the passenger seat.
For more information, see “Practical hints”
(
page 347).
1BabySmart
TM is a trademark of Siemens
Automotive Corp.
iThe system does not deactivate the
head-thorax air bag and the ETD (emer-
gency tensioning device).
Warning!
G
The BabySmart
TM air bag 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.

77 Safety and Security
Occupant safety
Warning!
G
When using a BabySmart
TM1
compatible
child seat on the passenger seat, the front
passenger air bag will not deploy only if the
75
indicator lamp remains illu-
minated.
Please be sure to check the
75
indicator lamp every time
you use the special system child seat.
Should the
75
indicator lamp go
out while the restraint is installed, please
check installation. If the
75
indicator lamp remains out,
do not use the BabySmart
TM restraint to
transport children on the passenger seat un-
til the system has been repaired.
1BabySmart
TM is a trademark of Siemens
Automotive Corp.
Warning!
G
Do not place powered-on laptops, cell
phones and like electronic devices on the
passenger seat. Signals from such devices
may interfere with the BabySmart
TM system.
Such signal interference may cause the
75
indicator lamp not to come
on during self-test or be continuously lit, in-
dicating that the system is not functioning.

80 Safety and SecurityDriving safety systemsIn this section you will find information on
the following driving safety systems:

ABS (A
ntilock B
rake S
ystem)


BAS (B
rake A
ssist S
ystem)


ESP (E
lectronic S
tability P
rogram)
ABS
The Antilock Brake System (ABS) regulates
the brake pressure so that the wheels do
not lock during braking. This allows you to
maintain the ability to steer your vehicle.
The ABS is functional above a speed of
approximately 5 mph (8 km/h) indepen-
dent of road surface conditions.
On slippery road surfaces, the ABS will
respond even to light brake pressure.
The -indicator lamp in the speedome-
ter dial (
page 24) comes on when you
switch on the ignition. It goes out when the
engine is running.
iIn winter operation, the maximum
effectiveness of the ABS, the BAS, and
the ESP is only achieved with winter
tires (M + S tires), or snow chains as
required.
Warning!
G
The following factors increase the risk of
accidents:

Excessive speed, especially in turns


Wet and slippery road surfaces


Following another vehicle too closely
The ABS, BAS, and ESP cannot reduce this
risk.
Always adjust your driving style to the pre-
vailing road and weather conditions.
Warning!
G
Do not pump the brake pedal. Use firm,
steady brake pedal pressure instead. Pump-
ing the brake pedal defeats the purpose of
the ABS and significantly reduces braking
effectiveness.