Air conditioning refrigerant filling capacities and ventilation system overview for 450, 451, 452, 454 chassis models.

Specifications tables for AC refrigerant capacity and diagram showing heater/AC operating unit location on 451.3/4 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.