Traction control, ABS and brake lights turned on

I needed a front wheel bearing on the passenger side of my car, and when it started to make a sound the ABS, traction control and brake lights all appeared at the exact same time. I had not both sides but only the one that was gone bad and a new set of front brake pads. After I got off work to pick up my car and I started it the three lights were on until I got to the end of the block and they were off all the way home. I cut the car off once I got home in my driveway and started it they didn't come back on until later in the night after I got in my car started it and they were all on again and till now are coming on as soon as I start the car. There has to be just one single part that made all of them come on at the same time and never had until the bearing was needed. What part is needed that controls all three that are coming on and staying on as soon as I start the engine?