Smart 454 fuel tank emptying procedure with engine 134.9/135.9, showing fuel line disconnection points and fuse module location.

Fuel system service procedure with numbered callouts on engine bay and interior fuse box images.

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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.