LAUNCH X-431 PRO DYNO diagnostic tool offers comprehensive support for Mercedes-Benz vehicles, including advanced online coding functions. However, users may encounter error N820 when attempting online programming on certain Mercedes models like W212 2015.
This error typically indicates that the online programming function hasn’t been purchased or activated. The system prompts users to acquire this feature through the shop on the homepage. For Mercedes-Benz online coding operations, particularly for transmission programming (VGS4NAG2_X), the PAD series devices are specifically required to ensure compatibility and functionality.
X-431 PRO DYNO excels in standard diagnostic functions, but for advanced Mercedes coding tasks, users should consider upgrading to PAD series tools or purchasing the online programming license. Technical support recommends updating the software to the latest version before attempting any online coding procedures.
This limitation ensures that complex vehicle programming is performed with the most suitable equipment, thereby maintaining diagnostic accuracy and preventing potential conflicts with vehicle systems during the coding process.