Replace coolant procedure for 454.0 model with 122.9, 134.9, 135.9 engines showing radiator, drain plugs, expansion reservoir, filling device.

Coolant replacement service procedure with four engine bay photos and numbered component callouts 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.