Remove/install heater control cable on chassis 454 with air conditioning plus, showing dashboard controls and under-dash routing.

Dashboard heater control unit and cable routing diagram for Smart Fortwo 454 with climate control.

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See all HVAC & Comfort figures for the Fortwo / Forfour (453), 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.