My 210 (E55) has been throwing a few curve balls at me lately. About a month or two ago my coolant warning flashed-up, it was undoubtedly at a low level. I felt the cap had to be original after inspecting it, so I replaced it with a oem equivalent and burped the system. I filled the reservoir to about 90% capacity when I replaced the cap. There is no change to the level of coolant to date after this procedure.
Today the low warning light displayed, but the level is still at 90%. I’m leaning towards a faulty sensor? The cooling system appears to be operating fine. I appreciate all the help!