Cooling system service procedures steps 9-15 for Smart 450 chassis, including cap removal, coolant level check, and expansion reservoir sealing.

Service procedure table with engine coolant maintenance steps and two diagrams of pressure pump and filling device tools below.

View full-size image ↗

See all Powertrain figures for the Fortwo (450), 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.