Ok lets try this again... On a recent trip to the west coast I got an engine light, the throttle control light and the ESP after I let the motor sit idle for about 5 min. It was over 100 as well so that might have had some impact. I disconnected the battery to reset the engine light but I wanted to know if that clears all faults out of the memory as well? I was going to take it in this weekend for oil change etc and see if they can look at the engine light issue. Any thought on the volatile memory question??