Box wrench bit 450 589 09 99 04 and stop lamp switch components on Smart 450/451 models.

Technical diagram showing box wrench tool and brake pedal stop lamp switch assembly with numbered callouts.

View full-size image ↗

See all Chassis 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.