F15 abs eps dme horn errors + water from sunroof

[Bmwlover x]

Hello. I have such problem. Sometimes errors come and then they go away. When I am checkong with ista have only 2 active errors but sometimes I have engine error and abs error on dash.
And parking brake reduced sign on hu but parking brake works good.

Any thaughts?
Car is new for me and maybe it is not related to the water from sunroof and it had that errors before too.