SMART fortwo coupe Operator's Manual page 43

If the 40 indicator lamp is not
illuminated, the passenger front air bag is
activated and will be deployed:
in the event of certain frontal impacts
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if impact exceeds a preset deployment
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threshold
independently of the head-thorax air
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bags
If the passenger front air bag is deployed,
the rate of inflation will be influenced by:
the rate of vehicle deceleration and a
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fastened or unfastend seat belt as
assessed by the air bag control unit
the passenger's weight category as
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identified by the Occupant
Classification System (OCS).
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Warning!
Children 12 years old and under must be
seated and properly secured in an
appropriate infant or child restraint
recommended for the size and weight of the
child.
The infant or child restraint must be
properly secured with the vehicle's seat
belt, fully in accordance with the child
seat manufacturer's instructions.
Children can be killed or seriously injured
by an inflating air bag. Note the following
important information:
Your vehicle is equipped with air bag
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technology designed to turn off the
passenger front air bag in your vehicle
when the system senses the weight of a
typical 12‑month‑old child or less along
with the weight of a standard
appropriate child restraint on the
passenger seat.
A child in a rear-facing child restraint
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on the passenger seat will be seriously
injured or even killed if the passenger
front air bag inflates in a collision
which could occur under some
circumstances, even with the air bag
technology installed in your vehicle.
If you install a rear-facing child
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restraint on the passenger seat, make
sure the 40 indicator lamp
is illuminated, indicating that the
passenger front air bag is deactivated.
Should the 40 indicator
lamp not illuminate or go out while the
restraint is installed, please check
installation.
Periodically check the 40
indicator lamp while driving to make
sure the 40 indicator lamp
is illuminated.
If the 40 indicator lamp
goes out or remains out, do not transport
a child on the passenger seat until the
system has been repaired.
A child in a rear-facing child restraint
on the passenger seat may be seriously
injured or even killed if the passenger
front air bag inflates.
If you place a child in a forward-facing
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child restraint on the passenger seat,
move the seat as far back as possible, use
the proper child restraint recommended
for the age, size and weight of the child
by the seat manufacturer, and secure
child restraint with the vehicle's seat
belt according to the child seat
manufacturer's instructions. For
children larger than the typical
12‑month‑old child, the passenger front
air bag may or may not be activated.
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Deployment of the driver front air bag
does not mean that the passenger front
air bag also should have deployed.
The Occupant Classification System
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( page 39) may have determined:
that the seat was empty or occupied by the
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weight up to or less than that of a typical
12‑month‑old child seated in a standard
Occupant safety
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41