Heater/AC operating unit N23 identification with screw, flexible shaft, and removal/installation procedure for chassis 451.

Diagram showing heater AC unit N23 with numbered callouts and step-by-step removal instructions.

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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.