Note: On 7G models (Mazda3 BP, CX-30 DM), there is no need to search as-built data.
1) On MDARS, the manual entry of as-built data or ECU software numbers is not necessary.
In case MDARS doesn't read as-built data from the original ECUs on the vehicle, MDARS automatically accesses as-built data server to get the necessary as-built data and write it to the ECUs.
2) In case ECUs such as BCM, PCM, LFU, etc. are damaged, the manual entry of VIN is required for the vehicle identification.
MDARS retrieves the necessary data for the vehicle identification from as-built data server based on the VIN manually entered.