Hello, This is my first time posting here. I really am glad that there are these forums to help us with the cars problems. On the topic of the "trac OFF" and "check engine" lights being on. I have a 1999 Lexus Es300 that had that same problem, when i got in the car and started it up both lights would be on, sometimes they would go out and sometimes they wouldnt and would just stay on. I brought it by my local Lexus Dealership where i bought it(pre-owned) and had them do a diagnostics test on the car. After the $70 for labor charge for the diagnostics testing they came up with the idea that my TPS ( Throttle Positioning Sensor) was gone. Of course they were trying to hook me in for a $300 dollar job to do the repair, but i decided to check my repair manual and bought the part for $55 dollars. The install was really simple (remove some screws, disconnect the electrical connector, replace the part, install connector and screws and finished) took me no more than 10 minutes and the car is now running fine. I no longer have any problems with the car. I dont know if that was any help but just thought i would let you know.
