The VCDS HEX V2 interface is a crucial tool for diagnosing and modifying Volkswagen, Audi, Seat, and Skoda vehicles. While the genuine Ross-Tech version is highly recommended, budget-conscious users often turn to Aliexpress for more affordable alternatives. This article explores two VCDS HEX V2 clones purchased from Aliexpress, comparing their hardware, functionality, and potential risks.
Decoding the Atmega162 HEX-CAN Cable
The first cable, advertised as a VCDS HEX V2, was based on the Atmega162 microcontroller. This chip is also used in genuine Ross-Tech HEX-CAN cables, the predecessor to the HEX V2. However, several red flags indicated this was not a true V2:
- Incorrect Version: Despite being marketed as a V2, it functioned as a HEX-CAN cable.
- Suspicious Loader: The required loader software was flagged as malicious by VirusTotal.
- Price Point: At $29, the price was significantly lower than a genuine HEX V2.
Due to the outdated functionality and security concerns, this Atmega162-based cable is not recommended for users seeking a true VCDS HEX V2 experience.
Exploring the STM32F405 VCDS HEX V2 Clone
The second cable, priced at $49, utilized the STM32F405 microcontroller, similar to the genuine HEX V2. This cable presented a more compelling case:
- No Loader Required: It functioned with the official VCDS software (version 20.4.1) without modification.
- Improved Performance: Faster logging and data transfer speeds compared to the HEX-CAN cable.
- Full Functionality: Provided access to all vehicle modules and functions.
Further investigation revealed the chip was locked with Read-Out Protection (RDP). However, bypassing this protection was achieved using a ChipWhisperer.
Conclusion: VCDS HEX V2 Aliexpress – Proceed with Caution
While the STM32F405 based VCDS HEX V2 clone from Aliexpress offered surprisingly good functionality, it’s crucial to understand the potential limitations and risks associated with using cloned diagnostic tools. Future VCDS software updates requiring firmware updates may render the clone unusable. For long-term reliability and guaranteed compatibility, investing in a genuine Ross-Tech VCDS HEX V2 remains the best option. However, for users on a tight budget, the STM32F405 clone offers a functional, albeit potentially risky, alternative.
