I have an update!
So I have pulled all of the fuses responsible for computer, radio, telephone, cd changer(which i don't have).... And battery is still alive after over 30 hours!
At least I know the general area where the drain is happening!
I have placed all of the fuses back besides the Telephone one(Fuse 74),
so I am suspecting bluetooth or the emergency assistance console(might be it bc I remember water dripping out of the plastic grille near those buttons).
In addition I have read about faulty TCU, which is kind of responsible for those functions.
Let's see if it stops draining the battery with phone off.