Open Device Manager, locate the Ross-Tech USB Interface , right-click, and select Uninstall device (check "Delete the driver software for this device").
Completely uninstall the existing VCDS software from your PC.
To help narrow down the exact cause of your software issue, tell me:
If you are using an aftermarket VCDS (VagCom Diagnostic System) diagnostic cable paired with a custom loader tool, encountering the error means your custom loader cannot handshake with or upgrade the interface hardware. This issue usually stems from disabled bootloaders, blacklisted EEPROM chips, or an accidental internet connection that allowed the official Ross-Tech software to deactivate your device.
Select , then choose Let me pick from a list of available drivers on my computer . vcds loader kolimer failed 2 updated
Create an explicit Outbound Rule in Windows Advanced Firewall for the software's main executable. Block all connection types to permanently prevent background license checks.
Prevent security programs from stripping the execution files. your antivirus platform or Windows Security dashboard. Find the Exclusions or Allowed Threats menu.
If you're a Volkswagen or Audi owner, you're likely familiar with the VCDS (Vag-Com Diagnostic System) tool, which allows you to diagnose and modify various settings on your vehicle. However, some users have reported encountering an error message while using the VCDS loader, specifically "Kolimer failed 2." In this article, we'll explore what this error means, its causes, and most importantly, provide step-by-step solutions to fix it.
Prevents unauthorized server updates from bricking the cable. Launch exclusively via VCDSLoader.exe Bypasses standard license checks safely. Antivirus Set a permanent folder Exclusion Keeps security tools from deleting patched files. OS Environment Use standard Windows Home/Pro (No S-Mode or VMs) Open Device Manager, locate the Ross-Tech USB Interface
What color the turn on your cable when plugged into the PC.
Some users have reported success by using tools to re-map the FTDI chip (PID 0403/FA24) to make it look like an older version. Best Practices to Avoid Future Failures
Several factors can contribute to the "Kolimer failed 2" error. Some common causes include:
The best approach is a systematic one, starting with the most common fix and working down. Prepare to reinstall your software a few times during this process. Block all connection types to permanently prevent background
You need a specific version of VCDS that matches your Kolimer Loader.
Scroll down to and click Add or remove exclusions . Click Add an exclusion and select Folder .
If your interface is stuck showing a failure status, follow these steps to restore its functionality. Step 1: Complete System Clean