BMW - FALSE Coolant Level Warning

How to test the coolant level sensor using a magnet. For most BMW's especially rom 2013 +. A false coolant level reading is most likely due to a bad coolant tank.
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[@JeromeAnderson-wy2ml]

This was very informative

[@1stlady577]

Love the lesson. Would love it if you had a question and session

[@davec5237]

Thanks for sharing. 👍

[@MikeMDs]

You bet

[@shawnconnolly6572]

I replaced mine and everything runs fine and doesn't say coolant level is low BUT now it threw code U019F - Lost communication w/ engine coolant pump control. Any thoughts on How to fix this?

[@Lexingtonthe3rd]

Having the same problem 2014 Bmw 528i topped it off and still goes on ,after I turn my car off it goes away I wonder if I change the sensor will that fix it,no leaks no where but temp for oil goes close to 250 not sure if that’s normal or if it’s the same issue

[@MikeMDs]

You probably have a bad tank

[@titanahampton2569]

Did you figure out what was wrong? My car is doing the same thing now.

[@JeromeAnderson-wy2ml]

What happens if you added water in the coolant compartment

[@MikeMDs]

It wont hurt it.