My SC300 has about 165,000 miles. Last week while driving the check engine light would turn on and the Trac off light would turn on. Both stayed on for about 5 minutes then turned off, and that happened about 2 times that week. Recently I was driving and both lights came back on and this time has stayed on. Has anyone ever encountered this problem? The car seems to drive normal, does not feel any different. Any help would be appreciated.