Extracts and calculates Component Security values for ECU, TCU and ELV from the dashboard's immo data and a valid sync key.

How to Use

1 Upload the immo_block file extracted from the dashboard.

Upload the sync_key file from a valid, working key.

The tool will automatically calculate:

ECU CS TCU CS ELV CS PIN MAC

TCU CS can be obtained using the TCM decrypt feature inside ECU TOOLS.

All Key Lost (AKL) Scenario

If the vehicle has no TCU or ELV, only the ECU CS and the immo_block file from the dashboard are needed.

If the vehicle has ECU + TCU or ECU + ELV, provide the CS from both modules along with the immo_block to calculate the correct sync data.

If you have no file/key (ALL KEYS LOST), you can enter the MQB CS, ECU CS and TCU/ELV CS by hand in "Manual" mode to calculate the sync key directly.