Mitsubishi MOTORS Outlander 2019 Owner's Manual page 56

Seat belt pre-tensioner and force limiter systems
Pre-tensioner system
The driver and front passenger seat belts are
equipped with a seat belt pre-tensioner sys-
tem. In a moderate-to-severe frontal or side
4
collision or when a rollover or overturning of
the vehicle is detected, the pre-tensioner sys-
tem operates simultaneously with the deploy-
ment of the front airbags, side airbags or
curtain airbags.
The seat belt pre-tensioners are located in the
driver's and front passenger's seat belt retrac-
tors (A) and in the front passenger seat's final
anchor (B). When activated, the pre-tension-
ers quickly draw back seat belt webbing and
increase seat belt performance.
The seat belt pre-tensioner system includes
the following components:
4-26 Seat and restraint systems
1- SRS warning light
2- Front impact sensors
3- Seat belt pre-tensioner
4- Airbag control unit
5- Side impact sensors
6- Seat belt buckle switches
The airbag control unit monitors the readiness
of the electronic parts of the system whenever
the ignition switch or the operation mode is
under the following conditions. These include
all of the items listed above and all related
wiring.
[Except for vehicles equipped with the
F.A.S.T.-key]
The ignition switch is in the "ON" or
"START" position.
[Vehicles equipped with the F.A.S.T.-key]
The operation mode is in ON.
The seat belt pre-tensioners will operate
under the same conditions as the airbag con-
trol unit.
When the seat belt pre-tensioners activate,
some smoke is released and a loud noise will
be heard. The smoke is not harmful, but care
should be taken not to intentionally inhale it,
as it may cause some temporary irritation to
people with respiratory problems.
Even in the event of a severe impact, the pre-
tensioners will not operate if the seat belts are
not fastened. The seat belt pre-tensioners may
not activate in certain collisions, even though
the vehicle may appear to be severely dam-
aged. Such non-activation does not mean that
something is wrong with the seat belt pre-ten-
sioner system, but rather that the collision
forces were not severe enough to activate the
system.
WARNING
 The seat belt pre-tensioner system is
designed to work only once. After the seat
belt pre-tensioners have been activated,
they will not work again. They must
promptly be replaced and the entire seat
belt pre-tensioner system inspected by an
authorized Mitsubishi Motors dealer.