Smart radio 9 audio system front panel with labeled controls, buttons, and display for fortwo/cabrio.

Smart radio 9 unit showing 8 numbered controls: on/off switch, random button, station buttons, display, CD eject, function panels, and volume.

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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.