This occurs if you are trying to access a module on a car that is too new for the 15.7.0 database. In this case, an upgrade to the latest VCDS version and a newer HEX-V2 interface is required.
Released as a major update, VCDS 15.7.0 brought several key improvements to the VAG diagnostic ecosystem. While Ross-Tech has since released many newer versions, 15.7.0 remains a "sweet spot" for users with older hardware interfaces. Key Features of Version 15.7.0 vcds 1570 mhh auto page 1
Resolved communication issues with certain ABS modules and instrument clusters that plagued previous 14.x versions. Why MHH Auto is the Go-To Resource This occurs if you are trying to access
VCDS 15.7.0 continues to be a relevant tool for those maintaining VAG vehicles from the 1990s through 2016. By leveraging the collective knowledge on MHH Auto, users can keep their older diagnostic hardware functional and perform advanced tasks like battery registration, DPF regeneration, and long coding without the need for expensive dealership visits. While Ross-Tech has since released many newer versions, 15
Even with the guidance from Page 1 of the MHH Auto threads, users may encounter hurdles.