Although it comes with J2534, it cannot code Benz and BMW ECU and SCN. You need MS908P or MX908P or Maxisys Elite. It's powerful, but more for cutting keys. I recommend buying it if you need it for this reason. I only bought the unit for the ECU/SCN coding after seeing in the description that it was capable of it. After trying it, it didn't work and then the technician told me it wasn't possible on this model.
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