Hi, had my STR for 10 weeks now and all is fine, until today. I'd covered about 5 miles, all OK, accelerated fairly hard onto a dual carriageway, to a reasonable speed and the EML came on. I went another 20 miles the light stayed on. Went shopping for an hour, came back to the car and the light came on and stayed on all the way home, no messages came up and performance was as normal, any ideas ?