Thanks for the responses. I will try the flush and look into the ETM and let you know.. Rolled the knob on the trip computer and ... time will tell - didnt do it today. Drove home with the top down today and reminded myself how much We enjoy the car!!

The trip computer display on the dash flashes "dISC" randomly. Cant find what this means in the manual. Also just recently (Probably once a week) while shifting into 2nd gear the engine surges approx 1500rpm just briefly.