Thorax-pelvis side air bags integrated into seat backrests and Occupant Classification System (OCS) operation for passenger safety.

Diagram showing yellow side air bags in seat backrest with numbered callout and text explaining OCS weight sensor function.

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See all Electrical figures for the Fortwo (451), 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.