[mikeinaustin]

dealer checked all the computers and the data stored in them, nothing wrong, no indication of anything to help diagnose the issue.

however, i do have one more data point. i finally was looking at the display when it happened. in this particular case, i was in 3rd gear and came to a stop. normally, it would shift to 2nd then 1st. in the error case, it was in 3rd and as i pressed on the brakes to stop, the car immediately shutoff, never shifted out of 3rd and i don't think it even tried to. so with the car dead at a stop, it showed "S3' in the shift display (sport mode, gear 3).

i also agree that as the temperatures rise, it is easier to reproduce. for me though, only sport mode, never, and i mean never a hiccup in normal mode.