Working on a 2006 Mercedes ML500 and found no communication with all module except engine module. I was sure it was ok before the latest Mercedes update since I had this car in here back in December and I can communicate with all module. Try it with a 2013 Hyundai and it only communicate with ABS, airbag module. The other module will not communicate including PCM. Had latest update on the VCI. How do I check if this is a software or hardware problem. My subscription expire couple days ago and I can't update software to check if it work. Anyone can help how to solve this problem? Thanks