Sometimes the system glitches. Try this sequence:
Using VCDS:
If you own a Volkswagen Passat (B5, B6, B7, B8, or NMS) and see the message on your instrument cluster, your car will not start. The engine may crank, but it will die immediately (usually within 1-2 seconds). This is one of the most common and frustrating security-related issues on modern VW vehicles. immobilizer active vw passat
Try these simple solutions first, as they resolve the majority of "false trigger" scenarios. Sometimes the system glitches