shudders, vibrations, and jerks torque converter?




When driving the TC should lock up, which rules out the TC as a problem if the lock holds. You should get a scanner that shows the speeds on the engine and TC turbine to see if the lock holds. If it does, then the vibration source would be your engine and not transmission problem at all.
they are a frequent failure point on Mercedes, old fluid and or coolant leak kills them slightly faster than the designers managed all on their own




The second sentence rules out TC if the lock in it works when car is moving.






