Heater/ventilation operating unit N23 components and removal procedure for Smart 450/451/452/454 chassis with control levers and flexible shaft assembly.

Exploded diagrams of heater/AC unit N23 showing air distribution lever, temperature control, fan speed lever, and component removal steps.

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See all HVAC & Comfort 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.