Originally Posted by Majestik

I filled up til it over-flowed just to make sure. Started the car and had 4 lights off!! Over the next day, I gradually went back - a light at a time - up to my original 1 light off.

I've got my 20k service due in the next few weeks. Would your advice be to let them check out the problem pre service so they have the parts ready or is it now a common enough problem for them to fix on the spot?