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Passenger airbag

Passenger airbag


The passenger airbag is offered as a factory-mounted option. In certain markets, vehicles are equipped with passenger airbags as standard. The airbag is mounted in the dashboard above the glovebox on the passenger side and is connected to the control module as indicated below and Control module connections , Airbag (SRS) LHD and Airbag (SRS) RHD .

The cable carries test and detonation current from the SRS control module to the passenger airbag.

The passenger airbag contains a gas generator and an airbag. The airbag has a volume of approx. 119 litres. The gas generator is secured to the airbag housing, which in turn is secured to the dashboard. The airbag is held in place by a foil with fracture lines. The dashboard contains corresponding fracture lines.

Passenger airbag gas generator




1. Projectile

2. Diaphragm

3. Gas container

4. Gas generator, 80 %

5. Gas generator, 20 %

6. Filter


The gas generator consists of a steel housing with two electric detonators, two explosive charges, pressurised gas and a gas distributor which cools and distributes the gas.

The two stages of the gas generator are divided into a primary stage of 80 % and a secondary stage of 20 %. Depending on the information the control module receives from the different sensors, the two stages are ignited with different time delays.

On receiving an activation command, the control module sends a current pulse to the detonator which ignites the explosive charge. The explosive charge for stage one shoots a projectile, which heats the pressurised gas. The gas expands from the heat and passes through the gas distributor and out into the airbag. The explosive charge for stage two warms the gas further, causing it to expand.

For more information on ignition signals, see SRS control module .