TPM wheel sensor component description and identification for Smart 451 chassis, showing sensor locations and part numbers.

Smart car diagram identifying four TPM wheel sensors with part numbers A69/1 through A69/4 and close-up of sensor assembly.

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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.