i have a 2004 limited 4runner 2WD 40,000miles. i was driving home tonight and i look down and my check engine, VSC TRAC, and TRAC OFF lights are on all 3 at the same time. i am still under warrenty and will proble take it to the dealership. but i would like to know why all 3 are on at the same time and what could it mean? thank you