The VCDS (VAG-COM Diagnostic System) relies on a hex can interface to communicate with vehicles. Ross-Tech offers two primary interfaces: the HEX-V2 and the HEX-NET. Both utilize a 32-bit microcontroller, delivering significant speed improvements for CAN-based cars. However, for K-Line vehicles, the module itself limits the communication speed, resulting in negligible performance differences between the two interfaces.
Older interfaces, like the HEX+CAN, face compatibility issues with newer vehicles (2016+). These older interfaces cannot access all modules in these newer models, necessitating an upgrade for comprehensive diagnostics. If you currently own a pre-2016 vehicle, upgrading isn’t immediately necessary.
Eventually, older VCDS interfaces, including the HEX+CAN, will lose official support. While Ross-Tech intends to provide a legacy VCDS software version for continued use with older hardware, accessing new features and functionalities will require an upgrade to the HEX-V2 or HEX-NET. The timeline for this transition remains undetermined, but it is estimated to be at least a year or more away.
The key distinction between the HEX-V2 and HEX-NET lies in the latter’s WiFi capability and onboard storage. The HEX-NET, with its integrated VCDS-Mobile software, enables diagnostics using any device with WiFi and a web browser, including smartphones, tablets, and computers running various operating systems. The HEX-V2, while lacking these features, still provides a robust and reliable wired connection for VCDS diagnostics. Choosing the appropriate interface depends on individual needs and preferences regarding wireless connectivity and mobile device compatibility.
