Flex OBD Write Fail on VAG DCM6.2V ECU Fix

 Problem: Read and write DCM6.2V Vag ECU with MMS Flex programmer. At 29% the write failed and car didn’t start, voltage was 13.3. Any solution?


Flex VAG DCM6.2V OBD Write Failed Car Not Start

Solution:

Do these without a charger. Probably an internet or server issue.

Or do it in bootmode! OBD after 21 with flex maybe can damage eeprom.

Never had an issue but generally use Autotuner for these. Even without a charger they are stable.

Instead of flex, we can use AT on it only because checksum by flex takes ages!

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