Climate control system operation including air recirculation mode, temperature regulation, and heater/AC unit controls for smart fortwo 451.

Climate control section with operating unit photo and system notes for smart fortwo model 451.

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See all HVAC & Comfort 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.