Problem:
After writing the Renault SID321 ECU with Flex programmer via OBD, the car does not start. After writing obd, the connection was lost. Then tried it with the bench. No luck.
The ECU now has no communication. Any solution?
Possible reasons:
Checksum or bad file 100%. You changed the wrong area.
People have done a lot over obd never problems.
Obd and bench protocols are the same.
Possible solutions:
1). Recover with Dfox bench or recover with Autotuner by OND or bench.
2). Recommend bflash if you get no communication. Bflash has a repair service for SID321.
3). Change new ECU and do service coding. Then do injector coding but may need adblue DPF off again.
FYI:
This Flex protocol performs an UNLOCK PATCH for both READ and WRITE operations.
The patch is applicable only if Flex has the same ASW number detected inside the ECU.
If the ASW number isn’t available in Flex’s database, Flex cannot apply the UNLOCK patch, and consequently, neither READ MAPS nor VIRTUAL READ will be possible.
IF Flex has not virual file for this version, update ECU to the latest version or use KESS3 or Autotuner instead.
