The book says 'if engine runs normally Contact your service agent, "Do not stop using car".
As I'm exactly 3,000 miles away from the big 60,000 mile service, I pondered if the illuminated icon was an advert/reminder to 'sell a service for the dealer network', and then goes off after 500 miles or so?
I seem to remember having a car once that did this sort of pedantic Health & Safety routine, as a 'nanny/nonny warning' to placate the dealers, with an income stream. At that time the vendors were getting screwed uphill & down dale by the manufacturer shrinking margins.
Knowing the 'Phoenix Fours' proclivities it looked a likely contender?
I can't find anything wrong anywhere physically - any ideas ... ?