MB Carsoft 7.4 primarily works on Mercedes models produced between 1995 and 2005. It supports the 38-pin round diagnostic connector (found under the hood) and early 16-pin OBD2 sockets. It does not support newer CAN-bus systems (models after ~2006), Sprinter vans beyond 2006, or advanced coding like DPF regeneration or key programming.
Here is a draft overview of what you need to know if you are trying to set up or use this software: What is MB Carsoft 7.4?
Disclaimer: This post is for educational and diagnostic archival purposes only. The author does not host or provide direct download links to copyrighted software. Please ensure you comply with your local laws regarding automotive software.