Help! Does anyone else have the coolant warning "stop engine" sign coming on frequently (at least 1x month for the last 6 mo. perhaps) The dealer keeps topping it off (sign comes on when it reaches the minimum level). The engine never shows hot, I never see evidence of a leak in my garage, yet the coolant disappears. The dealer checked and found no leaks. Dealer is not aware of this problem with anyone else, or so they claim. It is getting a bit annoying to say the least! Can't find any problems of this sort on this site except way back in 2000. My car has 55K but this has been happening since before the 50K warranty. Absolutely love the car otherwise!