# VAG-COM Diagnostic System: Detailed Explanation

VCDS (VAG-COM Diagnostic System) is an specialized automotive diagnostic tool developed and produced by Ross-Tech, LLC since May 2000. Originally called VAG-COM, it’s particularly tailored for VAG vehicles, supporting Volkswagen, Audi, SEAT, Skoda, and to a limited extent, Bentley and Lamborghini models. https://vcdstool.com/

## Main Features and Use

VCDS is a Windows-based program suite that, when used with a compatible connection hardware, converts a regular PC or laptop into a high-performance diagnostic system equivalent to many factory tools. It connects to a vehicle’s diagnostic connector and interacts directly with the vehicle computers across the vehicle.

Different from basic OBD-II scanners, VCDS uses in-depth Volkswagen Group-specific manufacturer protocol functions, enabling it to utilize each diagnostic-capable vehicle systems—even in pre-1996 models that fall outside by standard OBD-II specifications.

## Device Choices

Ross-Tech offers several connection device options:

1. **HEX-V2**: A physical cable tool created to be faster and reliable than earlier models. It offers a swappable USB cable and can conduct automatic diagnostics much more rapidly than previous interfaces.

2. **Network Interface**: A wireless interface that works with both wireless network and USB links, permitting users to control the tool from a tablet, Android device, or laptop. This additional functionality offers more versatility when working on vehicles.

## License Types

VCDS is available in several usage plans:

– **Unrestricted Commercial**: For mechanics or users who handle many different vehicles.

– **Hobbyist**: Restricted to 10 unique VINs, ideal for enthusiasts servicing several VAG cars.

– **Home User**: Limited to 3 unique VINs, suited for individuals with just VAG vehicles.

## Capabilities and Features

VCDS offers extensive scanning and coding capabilities, such as:

– Accessing and erasing diagnostic alerts from all vehicle systems (motor, gearbox, ABS, airbags, etc.)

– Accessing real-time data from vehicle monitors and producing graphs of this data

– Performing basic settings, adaptations, and coding modifications

– Reinitializing maintenance and inspection reminders

– Adjusting brake calipers for maintenance

– Executing throttle body adaptations

– Performing DPF manual maintenance

– Running module actuation tests

Howard Pitkow reviewed in the user feedback states VCDS as “the fastest diagnostic tool he owns” and “significantly speedier and easier to use than the Volkswagen OEM tool”.

## Compatibility

VCDS supports VAG vehicles built from 1995 through modern models. With an extra 2×2 adapter, coverage can be increased back to vehicles from 1990. The software accommodates all vehicles with OBD-II interfaces, including those using current Controller Area Network and Unified Diagnostic Services protocols.

## Contrast to Other Tools

When contrasted against alternative VAG diagnostic tools like competing scanners, VCDS is typically regarded as more detailed and more appropriate for in-depth troubleshooting and programming. While competing tools feature smartphone compatibility and a more user-friendly interface for casual users, VCDS delivers enhanced functions chosen by professional mechanics and dedicated enthusiasts.

According to user reviews, VCDS is notably beneficial for:

– Dealerships servicing various VAG vehicles

– Home mechanics who often do maintenance more than routine oil changes

– Technicians who need in-depth diagnostic information and complex programming capabilities

– Users of legacy (pre-2005) VAG vehicles

The device has evolved into practically critical for dedicated Volkswagen and Audi car owners, with countless users considering it “some of the best investments” for those working on these vehicles.