Service procedures for transmission, clutch, and STAR diagnostics programming on chassis 450/451 manual transmission models.

Table showing numbered service steps 20-27 for transmission maintenance and diagnostic procedures with part numbers and menu locations.

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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.