Mazda3 and Mazda CX30 from year 2020 have S6J329CPLS Spansion mcu on Speedo. They are equipped with VISTEON cluster and have no EEPROM. Mazda 3 2020 cluster Picture from the other side of PCB. BTW, the needles does not have … Continue reading Mazda 2020 S6J329CPLS Mileage Correction