Audi A3 Sportback, Сервисная инструкция, Страница: 19 / 60

19
Head airbags, N251, N252
Sideguards
The sideguard covers almost the entire side window
area. With these modules, the hybrid gas generator
is installed in the rear roof area and inflates the
airbag through a gas lance.
The support is mechanically propelled out of its
mount through the detonation of the propellant
charge.
The helium stored in the pressurised gas bottle at
600 bar now breaches the rupture disc.
The gas flows through the filter into the gas lance
which connects the airbag to the gas generator.
326_024
Lumbar support
plate
Functional unit
"active head
restraint"
Active head restraints
The task and function of the active head restraint
are described in Self-Study Programme 312, Audi A3
´04 Electrical System.
For further information, refer to this Self-Study
Programme.
Connector
Gas lance
Gas generator
332_037
332_036
Filter
Support
Rupture disc
Gas lance
Propellant charge
Pressurised gas
bottle
332_035