Renault Scenic Driver's Handbook Manual page 40

METHODS OF RESTRAINT IN ADDITION TO THE FRONT SEAT BELTS
These are:
– buckle pretensioners,
– lap belt pretensioners,
– chest force limiters;
– driver and passenger front air
bags.
These systems are designed to act in-
dependently or together when the vehi-
cle is subjected to a frontal impact.
Depending on the severity of the impact,
the system can trigger:
– seat belt locking;
– the buckle pretensioner (which en-
gages to correct seat belt play);
– the lap belt pretensioner to keep
the occupant in their seat, the low
volume front air bag and the force
limiters;
– the large volume front air bag.
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2
1
Pretensioners
The pretensioners hold the seat belt
against the body, holding the occupant
more securely against the seat, thus in-
creasing the seat belt's efficiency.
In the event of a severe frontal impact
and if the ignition is switched on, the
system may engage the following de-
pending on the force of the impact:
– piston 1, which immediately retracts
the seat belt;
– piston 2 on the front seats.
– 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 RENAULT Network
personnel may work on the pre-
tensioner 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 your RENAULT Dealer
for disposal of the pretensioner
and air bag gas generators.