SMART forfour Operating Instructions Manual page 144

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Airbag operating principle
The airbag is inflated in a matter of mil
liseconds. The indicator light comes on.
>Note!
If the airbags are activated, you will
hear a loud noise and some dust may be
generated. The explosion fundamentally
represents no risk to your hearing, and
the dust is harmless.
The inflated airbag slows and reduces
the movement of the occupant. When the
occupant makes contact with the airbag,
hot gas flows out of the inflated front
airbags and side airbags. This reduces
the load on the occupant's head and upper
body. These airbags are consequently de
flated after the accident.
Danger of injury!
After airbags have been inflated:
airbag components will be hot. Do not
touch them as you otherwise risk sus
taining burns.
the airbags must be changed by a
qualified specialist workshop,
which will have the necessary exper
tise and tools for performing the
work involved. smart gmbh recom
mends that you visit a smart center
for this. It is particularly important
to have safety relevant work and work
on safety relevant systems per
formed by a qualified specialist
workshop.
Airbags
Danger of injury!
A small amount of fine powder is
released for a short period when an
airbag is inflated. This fine powder is
entirely harmless; its smoky appear
ance does not indicate a fire in the car.
The fine powder could provoke tempo
rary breathing difficulties in people
with asthma or respiratory problems.
To avoid these breathing difficulties,
such persons should either leave the
car provided it is safe to do so, or open
the windows to let fresh air in.
On the move 6 29