Supplemental Restraint System (SRS) function diagram showing airbag sensors, control modules, and CAN bus interconnections for smart 450/451/452/454.

SRS function diagram with labeled sensors, airbag squibs, control units, and communication network connections.

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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.