For the past couple of months my Brake warning light, ABS light, Engine light, Service light, and a couple of others come on at random times. A message appears on the console saying "Brake failure, stop the car ASAP". However, there is nothing wrong with the brakes or anything else. Also, when these lights come on, my odometer stops advancing. It is happening more frequently with each passing week. Where do I start tracking down the problem?