S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Engage the gas generator on the pins and tighten the cap nut - 1 - and nut - 2 - by hand.
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Tighten the side curtain airbag bolt - 3 - on the roof frame.
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Tighten the gas generator on the ground pins using the nut - 1 -.
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Tighten nut - 2 -.
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Connect the electrical connector - 4 -.
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Connect the connector - 1 - on the side curtain airbag igniter - 2 -.