Soft top roof control system data flow chart with CAN bus communication for smart fortwo 451 cabrio models.

Schematic diagram showing soft top motor, relays, switches, and control unit connections for convertible roof operation.

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See all Electrical 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.