Autotuner Failed to Read VW Golf8 MD1CS004 ECU?

By | March 30, 2026

Problem:

It’s a VW Golf 8 year 2022. Autotuner reads MCU ID on bench, but fails to read ECU data. Error authentication error. Any solution?

autotuner vw golf8 md1cs004 ecu 1 autotuner vw golf8 md1cs004 ecu 2

Solution:

The ECU hardware number is 309AA and the hardware version is H80.

H80 309 AA ecu is locked.

309AA is not supported at the moment.