Thanks Mr. Guru for your feedback.

There is nothing added with software coding. When I put the main key then the display works fine from wheel's scroll buttons. Just when I start the engine suddenly after around 30 seconds display stop working and only show DEFECTIVE DISPLAY message.

Is it really defective despite it works fine before start the engine?
Same results I got from KeylessGo button. Updated scanner doesn't detect the failure, and that's very strange.
Thanks anyway. I'm afraid I must pay tons of $ in the MB dealer to fix it.