Chassis 454 restraint systems control unit removal/installation procedure with numbered callouts showing access points and component locations.

Smart 454 service manual page showing airbag control unit removal steps with six detail photographs and parts diagram.

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See all Electrical figures for the Fortwo / Forfour (453), 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.