BMW Low oil level add 1 litre message, oil level sensor

Is just like being married with a Latina, i know as i am married to one for ten years .
Do not panic is not a huge deal, check the damn sensor .
Do not like oil before check level on the dip stick like an idiot.
Do not put over maximum.
Go to mechanic the good pro scanner will say if the level sensor is bad. The cheap shit ones will not say. I got a cheap shit one and do not pick as error .
But the expensive one in the shop did .