Much like the Chevy Nova introduced in Mexico, my transmission is NO GO!

2005 Limited Edition Roadster Automatic Transmission

OK Here is what I did:
Got a new filter and O-rings for the electrical connector. Dumped the fluid, changed the filter. Replaced the O-rings on the electrical connector. Put it all back, flushed the fluid using the out 3 in 3 method. While I was dumping fluid out, I would shift the transmission through the different modes, park, reverse, neutral, drive, and then back through the modes back to park. I got it mostly filled and found out I did not have enough new fluid. I went to my local Mercedes dealer and got three quarts. OUCH. It was expensive. Put in two, check the level. It seemed to be showing ok.

I test drove it. Worked GREAT! Much smother shifts. Parked the car. Did some more clean out for evening ride. I got it ready, put it in drive drove about 10 feet paused, to get the right song on the stereo and then the transmission quit. No noise just hit the gas and no power. I can put it in park and the car stops, but it acts like neutral in reverse and drive.

I consulted the manual for troubleshooting. The only thing I can do is check the fluid level. it seems to be full now and showing about 50 mm at 100 F.

I have no idea on what to do next.