Porsche 911 turbo Owner's Manual page 21

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Air
Bag System
The "Air
Bag"
in
combination
with the
safety
belt makes up a
passive safety system
which
offers
ihe
driver and
fr'ont
seat passenger
the
greatest known
protection from injuries
in
case
of accident.
The air
bag system is composed of the follow-
ing 3
major groups:
'
Air bag
moduls
with gas generators and
ig-
nition
unit
.
Control electronics
.
Collision sensors
ln case of frontal collision greater
than a
cer
tain severity, the collision sensors send a
sig-
nal via
the
control electronics
to lhe
ignition
mechanism.
ln
the
ignition process,
a
solid
propellant
in the gas
generator is
combusted
in a
fraction
of
a
second.
This
combustion
generates the gas quantity and pressure
nec-
essary
to fill the air
bag.
The air
bag
is
located behind the
steering
wheel center pad on the driver's side, and
on
lhe passenger side
behind
the padding
above
the glove compartment. Due to the rapid
de-
Tlation
of the
air bag after use, there
is
iittle
danger
of
obstructed vision. Likewise,
the
noise
of the
inflation
of the air
bag generally
goes
unnoticed
because
of the collision noise.
The air bag protects the face and upper
body,
and at the same time
dampens
the
forward
motion of the
driver
and
passenger.
Range of Effectiveness
Even
if your
vehicle
is
equipped
with an
air
bag,
the
safety
belt must be
worn
at
all
times,
because
the air bag system is only
ac-
tuated by frontal collisions
with an
impact
of
sufficient severity. See
Tigure
for
range
of
ef-
fectiveness.
Below the
actuation ihreshold
of the air
bag
system,
and
during
types of
collisions
which
do not cause ihe actuation of the system,
the
seat bells
provide
the primary
protection to
the
occupants
when correctly worn.
There-
fore,
all
persons within the
vehicle must
19