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Shawn Clayton
Shawn Clayton

How to Use VCDS-Lite 1.2 13 to Diagnose Your Car

How to Use VCDS-Lite 1.2 13 to Diagnose Your Car

VCDS-Lite 1.2 13 is a software program that allows you to communicate with your car's on-board diagnostic system and access various modules and functions. It is compatible with older VAG cars (Volkswagen, Audi, Seat, Skoda) from 2005 or earlier that use K-line or KWP-1281 protocols. You can use it with any 3rd-party interface that supports these protocols, or with some of the old Ross-Tech interfaces.

In this article, we will show you how to download, install, and use VCDS-Lite 1.2 13 to perform some basic diagnostic tasks on your car.

vcds lite 1.2 13

Downloading and Installing VCDS-Lite 1.2 13

To download VCDS-Lite 1.2 13, you need to go to the official website of Ross-Tech, the developer of the software. The link is You will see a page like this:

Click on the link that says "Download VCDS-Lite". You will get a self-installing distribution file that you need to run on your PC. Follow the prompts to allow it to install itself on your hard disk. You must install VCDS-Lite on your hard disk; it will not work properly if you try running it directly from a floppy or CD.

After the installation is complete, you will see a shortcut icon on your desktop that looks like this:

Double-click on it to start the program.

Connecting Your Interface and Car

Before you can use VCDS-Lite 1.2 13, you need to connect an appropriate interface between your PC and your car. As mentioned earlier, you can use any 3rd-party interface that supports K-line or KWP-1281 protocols, or some of the old Ross-Tech interfaces. You can find a list of compatible interfaces on the Ross-Tech website:

The interface usually connects to your PC via a USB port or a serial port, and to your car via the OBD-II port under the dashboard. Make sure you have the correct drivers installed for your interface if it uses USB.

Once you have connected the interface, turn the car's ignition switch ON. No need to start the engine.

Configuring and Testing VCDS-Lite 1.2 13

When you start VCDS-Lite 1.2 13 for the first time, you will see a screen like this:

Click on [Options] and select the correct communication port that your interface uses. You can use [Test] to confirm that the program can use the port and find the interface. Then [Save].

Now you are ready to play with VCDS-Lite 1.2 13. Make sure the software can reliably access all the control modules that it should in your car. You can see a list of supported modules and functions on the Ross-Tech website:

Reading Fault Codes

One of the most common tasks that you can do with VCDS-Lite 1.2 13 is reading fault codes from various modules in your car. Fault codes are numerical codes that indicate what kind of problem or malfunction has occurred in a 29c81ba772


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