I have uploaded three video clips on Youtube worth sharing. I recorded them few months back, when I started facing a strange type of transmission shifting problem for the first time (during cold start). You can see in my videos that when I tried to put the gear in D or R mode the engine started acting clumsily. Often times the engine stalls with a vibrant shake. Even the feeling of shifting gears lever was very hard (a clunking sound can be heard). First I thought it was due to the Engine motor mount or Transmission rubber mount, but as per my mechanic they were both ok as the symptoms of a bad Engine motor mount are very obvious to note! After a week or so this issue went away by itself and the car started acting normally. But I noticed this when I changed the Diesel from Teboil to Shell. Nevertheless, still for sure I don't know what was the reason that cause this to happen and why? W211, E220 CDI Avantgarde | Strange Transmission Shift Problem (Part 1) W211, E220 CDI Avantgarde | Strange Transmission Shift Problem (Part 2) Sound of CDI Engine Please see these videos and kindly share your expert opinion. Thanks!
Engine mounts look OK from that video. Based on the symptoms, it is most likely to be a torque converter issue causing the engine stalling. Either the solenoid or something else.
It was the faulty Torque Converter! Please click this link to read: History behind buying the replacement 722.699 W211 E220 Automatic Transmission!