Interesting thing happened tonight, I lost traction in the wet, wheels spun for about 4 seconds, and the traction control off light stayed on. The button would not turn TC back on again until I restarted the car. Maybe because I have more power now? The TC doesn't stop wheel spin AT ALL with my current power level, with my old level (250rw) it used to half work. Anyway just interested on it turning itself off...?