Greetings,
Last month my brake lights went on because my brake fluid was almost at minimum, so I added some brake fluid. After that it has kept leaking(?) to the same min line in a week and I have to add more fluid weekly. Weird part is that I don't see any fluid on the ground/lines and the brake fluid container never leaks to empty, it always stops at the same min line? Any ideas to help my EK4?

 

Look under the dash at the carpet behind the brake pedal. If there is staining, the master cylinder could have a leak that drips inside the cabin. The sound deadening under the carpet will act like a big sponge and soak up a lot of the fluid without you ever knowing.