Comfort heating system component locations and seat heater assemblies for Smart Fortwo 453 models with driver and passenger seat heating.

Smart Fortwo 453 seat heater system overview showing heater pads, control units, solenoid switches, and temperature sensors.

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See all HVAC & Comfort 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.