Engine wiring harness removal and installation procedure for Smart 454.0 model with 639.939 engine.

Engine bay photo and wiring harness diagram with numbered removal steps for Smart Fortwo 454

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See all Powertrain 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.