VGS2/VGS-FDCT 5-Pin TCU Cable for Mercedes
The VGS2/VGS-FDCT 5-Pin TCU Cable is a specialized diagnostic and programming interface designed for modern Mercedes-Benz vehicles with dual-clutch transmissions. It features a proprietary 5-pin connector that directly interfaces with the transmission's control unit, bypassing the standard OBD-II port for a stable, high-speed connection. This robust cable ensures reliable communication for sensitive programming tasks.
Function
This cable allows for direct, low-level access to the Transmission Control Unit (TCU) of Mercedes-Benz DCT (Dual Clutch Transmission) and specific automatic gearboxes. Its primary functions include reading and clearing fault codes, performing transmission adaptations and resets, executing full TCU software flashing (programming and coding), and calibrating clutch points. It is a critical tool for transmission repairs, software updates, and performance modifications.
Support Car Models
This cable is specifically designed for Mercedes-Benz models equipped with the 7-speed dual-clutch transmission (7G-DCT) and related gearbox control systems. Key supported models include:
- A-Class (W176, W177)
- CLA-Class (C117, X117)
- GLA-Class (X156)
- B-Class (W246, W247)
- Certain models of the C-Class (W205) and E-Class (W213) have specific transmission codes.
Compatibility is closely tied to the transmission type (code 725.0). Verification of the vehicle's exact transmission hardware is required before use.






