Removing and installing injection system control unit on 454.0 with engines 122.9, 134.9, 135.9 – four engine bay views, component callouts, and control unit location.

Service procedure with numbered callouts showing engine bay components and motor electronics control unit removal steps

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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.