Head/thoraxbag unit locations and sensors in Smart ForTwo model 451, showing squib positions and B-pillar sensor mounting.

Diagram of Smart car with head/thoraxbag airbag units and sensors labeled on driver and passenger sides.

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See all Electrical figures for the Fortwo (450), or browse the full figure library. Part numbers and callouts are community-sourced and cross-referenced against the manuals — confirm with your VIN before ordering.