when the car (W202 C200) is accelerated from stop still, after maneuvering for some time appr. 10ft, there was a jerk during gear shifting (heavy noise) then i stopped. again the same problem occured. transmission fluid level was ok, ATF next due for change is 6000km. Then the car was stopped for two hours and drove to workshop. At this time there was no problem. At the workshop they did a full diagnostic test the only error code was traction error this was due to the jerk that i had earlier.
After clearing the error code, we drove for about two hours and did the diagnostic test but nothing shown.

please advise what could be the problem of this jerking the first time. thank you.