Thanks for fast reply TermX. The owners manual says, "a blinking or flashing SES light indicates a rather severe level of engine misfire. When this occurs please reduce speed and seek service at your BMW center as soon as possible." Further "Severe engine misfire even over a short period of time can seriously damage your emissions control components especially the catalytic converter." I have to get this thing to the indy shop, which is what I hope I can do tomorrow.