Car model and year: 1999 Mercedes E320
Mercedes diagnostic tool: Foxwell NT520
Before using the Benz 38pin cable: Failed
it did not pick up any codes, not even the vid number.
After using the Benz 38pin cable: succeed
After connecting 38pin cable to the car and Foxwell NT520, it worked.
Cleared the transmission code and now the transmission shifts perfectly
This is Mercedes Benz 38 PIN Round Adapter ordered from foxwelltool.com:
Therefore, for the old Mercedes Benz model’s diagnosis, please remember this small 38pin cable.