Specifications

pretensioners .........................................................(current page)
air bag...................................................(up to the end of the DU)
seat belts .............................................. (up to the end of the DU)
methods of restraint in addition to the front seat belts (up to the end of the DU)
1.27
ENG_UD21221_4
Dispositifs complémentaires à la ceinture avant (X83 - Renault)ENG_NU_881-5_X83_Renault_1
Methods of restraint in addition to the front seat belts
METHODS OF RESTRAINT IN ADDITION TO THE FRONT SEAT BELTS (1/4)
Depending on the vehicle, they are
composed of:
– pretensioners,
– force limiter,
– air bags for driver and front pas-
senger.
These systems are designed to operate
independently or together in the event
of a front, side or rear impact.
There are three possibilities, depending
on the level of impact force:
– protection is provided by the seat
belt only;
– the pretensioner is triggered to rec-
tify belt position and seat belt slack;
– the air bag and the force limiter are
also triggered when there are severe
impacts.
Pretensioners
With the ignition on, during a significant
side, frontal or rear impact, piston 1 in-
stantly retracts the seat belt buckle, flat-
tening it against the body and thus in-
creasing its effectiveness.
Force limiter
Above a certain level of impact force,
this mechanism is used to limit the force
of the belt against the body so that it is
at an acceptable level.
1
– Have the entire restraint
system checked following
an accident.
– No operation whatso-
ever is permitted on any part of
the system (pretensioners, air
bags, computers, wiring) and the
system components must not
be reused on any other vehicle,
even if identical.
– To avoid incorrect triggering of
the system which may cause
injury, only qualified personnel
from an approved dealer may
work on the pretensioner and air
bag system.
– The electric trigger system may
only be tested by a specially
trained technician using special
equipment.
– When the vehicle is scrapped,
contact an approved dealer for
disposal of the pretensioner and
air bag gas generators.