For some unknown reasons, the "check engine" light on my 360M came on and stayed on....everything else works perfectly. 1- Is this serious (again, the car runs perfectly and all readings are normal on the dashboard)? 2- What could be the causes? Car just had its major service (out of town...). I will have it check out but would like to solicit your opinions, 360M owners/mechanics/360 gurus...anyone...anyone?