Front compartment coolant reservoir location and checking procedure for Smart Fortwo 451, showing pressure cap and level indicator markings.

Coolant reservoir with numbered callouts showing pressure cap and level indicator marks on driver's side of front compartment.

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See all Powertrain figures for the Fortwo (451), 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.