can anyone help my check engie vsc and trac off lights came on and remained on . need help

Before you get flamed--do a search for VSC. You will find lots of different threads. I have had them come on four times--the reasons being:
1) bad alternator--replaced by toyota
2) leak after installing AEM CAI
3) Son did not tighten gas cap (this is a very common cause) and
4) bad VVTI timing mechinism replaced by Toyota.

As you see--many many reasons--please do the search and you will see...........

take it down to an autozone and have then run the code, they'll do it for free. Then come back with the code. Without the code, it couldbe any number of the aforemention items

took my car to the dealer sat. they said a part or sensor for the timing was bad they ordered the part it should be here this week they said it should take about 1 1/2 hours .this must be a common problem becasue they had a service bulletin on this problem when i have this fixed i will try and get a copy of this to post for who ever wants it. thanks for the help