Warning lights and erratic idle

Hello, is the check engine light on as well? You can have the ABS computer scanned for diagnostic trouble codes, same as the engine computer. There will be a code stored that will give you some direction. If it's just the VCD light then most likely you will find a trouble code stored for that system. You can go to your local parts store and they can scan it for free for you. Start there, it can be something as simple as a wheel speed sensor, bad wire, faulty module, etc.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing