2005 MERCEDES-BENZ CLK500 CABRIOLET belt

46 Getting startedDriving
The seat belt presenter slides back:

right after you pushed the latch
plate1 into buckle3 and heard it
click.


after approximately 60 seconds if you
did not push latch plate 1 into
buckle3.


if your door is opened.


if you turn the SmartKey in the starter
switch to position 0.


if you release a front seat backrest and
fold it forward.
Starting the engine
Warning!
G
Do not pass belts over sharp edges. They
could tear.
Do not allow the belt to get caught in the
door or in the seat adjustment mechanism.
This could damage the belt.
Never attempt to make modifications to
seat belts. This could impair the effective-
ness of the belts.
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.
Damaged seat belts or belts that were highly
stressed in an accident must be replaced.
Contact an authorized Mercedes-Benz
Center.
Warning!
G
The seat belt presenter must be retracted
while the vehicle is in motion. Only when the
seat belt presenter is retracted can the seat
belt be properly positioned on the body and
protect the occupant as intended.
Warning!
G
Inhalation of exhaust gas is hazardous to
your health. All exhaust gas contains carbon
monoxide, and inhaling it can cause uncon-
sciousness and lead to death.
Do not run the engine in confined areas
(such as a garage) which are not properly
ventilated. If you think that exhaust gas
fumes are entering the vehicle while driving,
have the cause determined and corrected
immediately. If you must drive under these
conditions, drive with at least one window
fully open.

57 Getting started
Parking and locking

Press the seat belt release button
(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 32).
With the hood, trunk and both doors
closed, all turn signal lamps flash three
times. The locking knobs in the doors
move down. The anti-theft alarm sys-
tem is armed.For more information, see “Locking and
unlocking” (
page 94).
Turning off the engine with
KEYLESS-GO*

Place the gear selector lever inP.

Press the KEYLESS-GO start/stop but-
ton to shut off the engine.
With the driver's door closed, the start-
er switch is now in position1. With the
driver’s door opened, the starter switch
is set to position0, same as SmartKey
removed from starter switch
(page 34).

Press the seat belt release button
(page 45).
Allow the retractor to completely re-
wind the seat belt by guiding the latch
plate.
iWith 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.
iOpening a door causes the windows on
that side of the car to open slightly.
They will return to the up position when
the door is closed.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.


60 Safety and SecurityOccupant safetyIn this section you will learn the most im-
portant facts about the restraint system
components of the vehicle.

Seat belts (
page 67)


Child restraints (
page 72)


Lower anchors and tethers for children
(LATCH) (
page 80)
Supplemental Restraint System (SRS) with


Air bags (
page 61)


Air bag control unit (with crash sen-
sors)


Emergency tensioning device (ETD) for
seat belts (
page 70)Air bag system components with


Front passenger front air bag off indica-
tor lamp (
page 79)


Front passenger seat with Occupant
Classification System (OCS)
(page 75)
As independent systems, their protective
functions work in conjunction with each
other.The SRS system conducts a self-test when
the ignition is switched on and in regular
intervals while the engine is running. This
facilitates early detection of malfunctions.
The
1
indicator lamp in the instrument
cluster comes on when the ignition is
switched on and goes out no later than a
few seconds after the engine has been
started.
The SRS components are in operational
readiness if the
1
indicator lamp is not
lit when the engine is running.
A malfunction in the system has been
detected if the
1
indicator lamp:


fails to go out after approximately four
seconds after the engine was started


does not come on at all


comes on after the engine was started
or while driving
iFor information on infants and children
traveling with you in the vehicle and
restraint systems for infants and chil-
dren, see “Children in the vehicle”
(page 72).

62 Safety and SecurityOccupant safetyWarning!
G
To reduce the risk of injury when the front
air bags inflate, it is very important for the
driver and front passenger to always be in a
properly seated position and to wear their
respective 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 make sure that it is prop-
erly positioned 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.
Occupants who are unbelted, out of position
or too close to the air bag can be seriously
injured 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.


Adjust the driver’s seat as far as possi-
ble rearward, still permitting proper op-
eration of vehicle controls. The distance
from the center of the driver’s breast-
bone to the center of the air bag cover
on the steering wheel must be at least
ten inches (25 cm) or more. You should
be able to accomplish this by a combina-
tion of adjustments to the seat and
steering wheel. If you have any prob-
lems, please see an authorized
Mercedes-Benz Center.


Do not lean your head or chest close to
the steering wheel or dashboard.


Keep hands on the outside of steering
wheel rim. Placing hands and arms in-
side the rim can increase the risk and
potential severity of hand/arm injury
when driver’s front air bag inflates.


Adjust the front passenger seat as far as
possible rearward from the dashboard
when the seat is occupied.


Occupants, especially children, should
never place their bodies or lean their
heads in the area of the door or the rear
side trim panel where the head-thorax
and rear side-impact air bags inflates.
This could result in serious injuries or
death should the air bag be triggered. Al-
ways sit nearly upright, properly use the
seat belts and use an appropriately
sized infant or toddler restraint or
booster seat recommended for the size
and weight of the child.
Failure to follow these instructions can re-
sult in severe injuries to you or other occu-
pants.
If you sell your vehicle, it is important that
you make the buyer aware of this safety in-
formation. Be sure to give the buyer this Op-
erator's Manual.

63 Safety and Security
Occupant safety
Warning!
G
Accident research shows that the safest
place for children in an automobile is in the
rear seat.
It should be noted that with respect to both
front and rear side impact air bags there is a
possibility for a side impact air bag related
injury if occupants, especially children, are
not properly seated or restrained when next
to a front head-thorax air bag or a rear side
impact air bag which needs to deploy rapidly
in a side impact in order to do its job.
To help avoid the possibility of injury, please
follow these guidelines:
(1) Occupants, especially children, should
never place their bodies or lean their
heads in the area of the door or the rear
side trim panel where the front
head-thorax or rear side-impact air bag
inflates. This could result in serious inju-
ries or death should the front
head-thorax air bag or rear side-impact
air bag be deployed.
(2) Always sit nearly upright, properly use
the seat belts and for children 12 years
old and under, use an appropriately
sized infant or toddler restraint or
booster seat recommended for the size
and weight of the child.
(3) Always wear seat belts properly.
If you believe that, even with the use of
these guidelines, it would be safer for your
rear seat occupants to have the rear mount-
ed side impact air bags deactivated, then
deactivation can be accomplished upon
your written request to do so at an
authorized Mercedes-Benz Center at an
additional cost.
Please contact your local authorized
Mercedes-Benz Center or call our Customer
Assistance Center at 1-800-FOR-MERCedes
(1-800-367-6372) for details.
iAir bags are designed to deploy only in
certain frontal impacts (front air bags),
and in side impacts (head-thorax air
bags and rear side-impact air bags)
which exceed preset thresholds. Only
during these events will they provide
their supplemental protection.
The driver and passengers should al-
ways wear their seat belts. Otherwise it
is not possible for the air bags to pro-
vide their supplemental protection.
In case of other types of impacts and
impacts below air bag deployment
thresholds, air bags will not deploy. The
driver and passenger will then be pro-
tected to the extent possible by a prop-
erly fastened seat belt. A properly
fastened seat belt is also needed to
provide the best possible protection in
a rollover.

64 Safety and SecurityOccupant safety
Safety guidelines for the seat belt,
emergency tensioning device and
air bag We caution you not to rely on the pres-
ence of the air bags in order to avoid
wearing your seat belt.
It is important to your safety and that of
your passengers that you replace de-
ployed air bags and repair any malfunc-
tioning air bags to make sure that the
vehicle will continue to provide supple-
mental crash protection for occupants.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 belts in-
stalled or supplied by an authorized
Mercedes-Benz Center.


Air bags and emergency tensioning de-
vices (ETDs) are designed to function on
a one-time-only basis. An air bag or ETD
that is deployed must be replaced.


Do not pass belts over sharp edges.
They could tear.


Do not make any modification that could
change the effectiveness of the belts.


Do not bleach or dye seat belts as this
may severely weaken them. In a crash
they may not be able to provide ade-
quate protection.


No modifications of any kind may be
made to any components or wiring of
the SRS. This includes changing or re-
moving any component or part of the
SRS, the installation of additional trim
material, seat covers, badges, etc. over
the steering wheel hub, passenger front
air bag cover, front seat backrests or
rear side trim panels, and installation of
additional electrical/electronic equip-
ment on or near SRS components and
wiring. Keep area between air bags and
occupants free from objects (e.g. pack-
ages, purses, umbrellas, etc.).


Air bag system components will be hot
after an air bag has inflated. Do not
touch.


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.

66 Safety and SecurityOccupant safety
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 front passenger front air bag will only
be deployed if:

the system, based on OCS weight sen-
sor readings, senses that the front pas-
senger seat is occupied


the56 indicator lamp in the
center console is not lit (
page 79)


the impact exceeds a preset deploy-
ment thresholdHead-thorax air bags
1Head-thorax air bag
The head-thorax air bags1 in the drivers
and front passenger seat are deployed:


on the impacted side of the vehicle


in impacts exceeding a preset deploy-
ment threshold


independently of the front air bags
The head-thorax air bags1 are not de-
ployed in impacts which do not exceed the
system’s deployment threshold.
iThe front air bags in this vehicle have
been designed to inflate in two stages.
This allows the air bag to have different
rates of inflation that are based on the
rate of relevant vehicle deceleration as
assessed by the air bag control unit.
On the front passenger side, the front
air bag deployment is additionally influ-
enced by the passenger’s weight cate-
gory as identified by the Occupant
Classification System (OCS)
(page 75).
The lighter the front passenger side oc-
cupant, the higher the vehicle deceler-
ation rate required for the second
stage inflation of the air bag.

67 Safety and Security
Occupant safety
Rear side-impact air bags
1Rear side-impact air bag
The rear side-impact air bags1 are de-
ployed:

on the impacted side of the vehicle


in impacts exceeding a preset deploy-
ment threshold


independently of the front air bags
The rear side-impact air bags1 are not
deployed in impacts which do not exceed
the system’s deployment threshold.
Seat belts
When the engine is started, the seat belt
telltale < illuminates to remind you and
your passengers to fasten your seat belts.
If the driver’s seat belt is not fastened be-
fore 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 provinces.
Even where this is not the case, all vehicle
occupants should have their seat belts fas-
tened whenever the vehicle is in motion.
For more information, see “Fastening the
seat belts” (
page 43).
Warning!
G
Only use seat covers which have been
tested and approved by Mercedes-Benz for
your vehicle model. Using other seat covers
may interfere with or prevent the
deployment of the head-thorax air bags.
Contact your authorized Mercedes-Benz
Center for availability.