SMART Fortwo cabriolet Operator's Manual page 40

Occupant safety
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being up to or less than the weight of a
typical 12‑month‑old child in a standard
child restraint, or if the passenger seat is
sensed as being empty.
When the OCS senses that the passenger seat
occupant is classified as being up to or
less than the weight of a typical
12‑month‑old child in a standard child
restraint, the 4 0 indicator
lamp will illuminate when the ignition is
switched on and remain illuminated,
indicating that the passenger front air bag
is deactivated.
When the OCS senses that the passenger seat
is classified as being empty, the
4 0 indicator lamp will
illuminate and remains illuminated.
When the OCS senses that the passenger seat
occupant is classified as being heavier
than the weight of a typical 12‑month‑old
child seated in a standard child restraint
or as being a small individual (such as a
young teenager or a small adult), the
4 0 indicator lamp will
illuminate for approximately 4 seconds
when the ignition is switched on and then,
depending on occupant weight sensor
readings from the seat, remains
illuminated or goes out.
When the 4 0 indicator lamp is
illuminated, the passenger front air bag is
deactivated.
When the 4 0 indicator lamp is
out and the passenger seat is occupied by
an adult or someone larger than a small
individual, the passenger front air bag is
activated.
When the OCS senses that the passenger seat
occupant is classified as an adult or
someone larger than a small individual, the
4 0 indicator lamp will
illuminate for approximately 4 seconds
when the ignition is switched on and then
goes out, indicating that the passenger
front air bag is activated.
If the 4 0 indicator lamp is
illuminated, the passenger front air bag is
deactivated and will not be deployed.
If the 4 0 indicator lamp is not
illuminated, the passenger front air bag is
activated and will be deployed
in the event of certain frontal impacts
R
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 unfastened seat belt as
assessed by the air bag control unit
the passenger's weight category as
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identified by the 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
R
on the passenger seat will be seriously
injured or even killed if the passenger
front air bag inflates in a collision