Front seat backrest foam section components with code S17 seat heaters showing electrical connector, wiring harness, brackets, cable tie, and sidebag harness.

Exploded view diagram of seat heater components with five numbered callouts identifying internal parts.

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See all HVAC & Comfort 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.