Done a search on this forum already, but I've not got a definitive answer yet. 3 times in the last month, my 99 Spider has been running perfectly fine, over a variety of distances and then just won't start. After a bit of waiting (phoned the RAC twice), the car has then responded to the key as if nothing has happened, before the RAC have even had a chance to arrive.
The next time it happens I'll look out for the code light flashing - I can't remember if this was on the last 2 times or not. I've tried doing a soft reset on the ECU but it hasn't worked.
Suspect it's the key transponder thing, but open to other suggestions.
Drink makes you think. Food makes you fatk.