400E Eng Coolant light
 

I just sold one of my 400E's a 92 model. The radiator and cooling system was flushed using BG products about 5 months ago.Th guuy who bought the car says that the low coolant level light comes on very lightly at night even though the resevoir is full. I believe that the problem is the sensor. Before I offer assistance does anyone else have any input.
Thanks
Alan

Just unplug the level sensor and see if the light goes out and if it does there's your problem.

This happend to one of my cars as well. I replaced the sensor and the part is about $15.