HELP : 2006 R-Class Electrical/Short Issues?

[NewR350]

Hi - recently purchased a new 2006 R350 from a dealer. After only having the car for 2 days, the vehicle's dashboard and multifunction display lit up light a video game, and completely shut down the car (no limp mode):

All the dashboard lights lit up:
- yellow exclamation point light
- orange brake light
- yellow ABS light

Multifunction display cycled thru errors:
- Drive to workshop without changing gear
- Visit Workshop
- ESP Display malfunction/Visit Workshop
- Run Flat Indicator unavailable
- Speedtronic inoperative

Luckily was able to pull over and park the car. But car would not shift into gear and was stuck. Called RA, MB tech tried to disconnect/reconnect battery, removed/reinserted fuse, and even tried to run a diagnostics via his computer - but he could not connect to primary command center. Therefore he could not shift the car into Neutral, so the car had be dragged onto the flatbed with the plates.

In any case, local MB dealer ended up determining that the Airmatic Control unit had shorted, and basically replaced the module. The work was later double checked by the selling dealer, and we were told that the vehicle was fine.

But just over a week later, the car lit up again and got stuck in park. Sent the car back to the dealer again, and after more analysis, they state that the Z connector plug was not properly grounded to the main wiring harness. They claim that this will "fix" the problem.

Any idea if this is the magic bullet that will actually correct this issue?????

Appreciate any guidance to validate that this problem is truly resolved.

- Owner of R350 for 1 month, already in shop for 20 days....