How to Clone Mercedes VGS-NAG3 Gearbox with LAUNCH X431 Xprog3 PC Adapter

This is a tutorial on how to clone Mercedes-Benz VGS-NAG3(9G Tronic) gearbox with Launch X-PROG3 PC Adaptor + X431 GIII on bench. You can also do the same process with X431 ECU & TCU Programmer if having one.

Open X-PROG3 PC Adaptor software,

Search ECU model:

Mercedes, C180 2012-2018, M274. 920 1991 207, VGS-NAG3 (9G Tronic)

Connect X-PROG3 PC Adaptor, X431 GIII& gearbox according to wiring diagram in "Direct connection of diagram".

Click "Connect" once finished.

Click "Read complete data".

Reading all data...

Save VGS-NAG3 data file.

Disconnect and reconnect to another gearbox.

Click "Read complete data" again.

Write complete data >> Load data file

Write all data completed.

Mercedes-Benz VGS-NAG3 gearbox clone was done.

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