key 4dOpen immo dump with TOYOTA 4D KEY TOOL and push Generate keys. Now using any transponder tool (Code reader, ZedBull, RW4, or other) write transponder data to TPX3 or EHThe number of possible permutations for a given 4D number depends on the number of unique dits in the 4D number as shown in the table below. Number of Unique Dits in the 4D