Bmw E39

[Alex g]

I have questions about my E39 520i

1) why the sensor always come up with .... " check Engine oil level " ??

2) why the sensor always come up with ... " check cooler level " ??

After checking, both of the level is ok . Is it just sensor problem ?? Or any other possible reasons ?

Thank you

Alex g

[JhwShark]

leaks?

[kiwibmw]

What year and mileage is the car?
Have you run a scanner for fault codes and can share those with us?
Do you know the history, especially with regard to the Crankcase Ventilation System (particularly if you live in a cold climate???).
What grade/make of oil have you in the engine?
When do you get these (on start up?) and what exactly do you mean by "the sensor"?

Hopefully, with that info, someone might get enough clues to help you out.