Automatic air conditioning function diagram showing sensor inputs, control units, and actuators networked via CAN bus on smart 450/451/452/454.

Schematic of AC system components including compressor, evaporator, sensors, and control modules connected by CAN.

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See all Electrical 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.