Air conditioning refrigerant filling capacity specifications and ventilation system function for Smart chassis 450, 451, 452, 454 models.

Modification notes table showing refrigerant capacities and ventilation system diagram with airflow arrows on dashboard.

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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.