Anyone familiar with 2001 Mercury Sables? I recently have gotten to use a 2001 Sable that is a perfectly great car. Low mileage, (43,000) fully loaded etc. However, it was obviously not driven very much, once a week back and forth to the beauty shop, but it was not garaged... mostly parked under a carport or a tree. What keeps happening is the Low coolant light comes on after it has been driven a while. The car has been checked out, and the coolant levels are fine... that's easy to see... no leaks were found. Recommended repairs were Trans Flush, Belt, and Fuel Injection service. I have noticed that after the light comes on the AC stops working as well on the Max setting and I lose fan speed adjustment ability. The way I know that is because when I turn the AC to AUTO and the fan on high, it blows harder. I have also noticed that after driving it with the light on, when I stop the car I can smell radiator fluid - but I haven't spotted any leaks - but I haven't looked very hard because mostly I just stop driving it. Any ideas what may be causing the light to come on? Is it actually related to the AC, or is that a separate problem, OR is it a computer problem? Has there been a recall on this? Is it something that I need to worry about?