When plugged into the car's OBDII port, the LED should be solid green. A flashing red light or no light at all suggests hardware failure.

Here is a breakdown of why this happens and how to fix it.

Windows may have auto-updated to a generic or incompatible driver.

First, let’s address the error message itself. VCDS error strings are often cryptic, but "Kolimer" is not a standard term. It is highly probable that this is a misreading or typo of or "Komponent" (German spelling). The error is almost certainly "Component Protection: Failed 2" .

The phrase "vcds kolimer failed 2" is almost certainly a typo or an auto-correction error for or "VCDS Calibration Failed 2." The word "Kolimer" does not exist in the VCDS lexicon, but "Component Protection" is a very common security barrier that produces specific "Failed" codes.

VAG vehicles use a centralized security gateway. When a module (like an Infotainment unit, a BCM, or a Gateway) is brand new, it comes "unlocked." However, once it is installed in a car at the factory, it is "married" to that specific Vehicle Identification Number (VIN).