Thought I'd chime in on this topic...

I too had the ABS, VSC, TRAC, and BRAKE lights all come on. They started coming on just shy of 2 years after I installed LED headlights with fans (Opt 7 is the brand).

I resigned myself to the fact that my brake booster, skid computer, and accumulator were all failing as I was showing codes for all 3, plus 3 speed sensors. I knew this was a common issue, and my car had around 185k miles at the time the lights started coming on, so it wasn't a huge surprise.

What *was* a surprise was that the lights came back on minutes after I replaced the whole unit with a brand new one ($$$$!!). I was SO disheartened. So, I started searching the forums, and found this.

I immediately went and bought $55 Sylvania Silverstar Ultra halogen bulbs and installed them. I've since driven about 100 miles and the lights have not come back on.

Moral of the story: swap your LEDs for halogens before buying expensive parts!