VXDIAG VCX SE Benz Not Connect with 2000 W210?

Problem:

VXDIAG VCX SE Benz and 2023.09 Xentry did not communicate with a MY200 Mercedes W210. Any idea?

Solution:

This is an old model with 38-pin round adapter.

VXDIAG Benz scanner can only do 16-PIN standard models. It does not work on older k-line models.

Use C4/C5 device instead.