Cooling system schematic with code V03 battery cooling system for Smart Fortwo 451 electric vehicle.

Schematic diagram showing coolant and refrigerant circuits with pumps, compressor, battery heater, and expansion valves.

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See all EV-specific 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.