Transmitter key component identification for model 451.3/4 Smart ForTwo showing lock, release, door open, and panic alarm buttons.

Exploded view diagram of Smart transmitter key with numbered callouts identifying button functions.

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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.