2017+ models like the SEAT Ibiza (KJ) and 2022+ Skoda Kodiaq. How to Fix the Error
This error typically appears when using older, discontinued Ross-Tech interfaces—such as the , Micro-CAN , or KII-USB —on vehicles from the 2017–2019 model years and newer . Why This Happens
These are the current generation of interfaces designed to handle the high-speed data and modern protocols of today's cars. The HEX-V2 is a wired USB interface.
While it varies by region, the following are some of the first models known to trigger this message with older cables: 2016+ Q7 (4M), 2016+ A4 (B9), 2017+ A4 (F4).
The only permanent solution for full diagnostic access to modern VAG vehicles is to upgrade your hardware.
2019+ models, including many on the MQB platform.
If you own a genuine, older HEX+CAN cable, Ross-Tech often offers a trade-in program to upgrade to a newer interface at a discounted price.
The "unsupported vehicle" error is not a software bug but a hardware limitation. Starting around 2017, the Volkswagen Audi Group (VAG) began implementing significant changes to their diagnostic systems:
