Hello together, I’ve been driving my b4 avant with the 2.6 liter machine for about a year now. Now cool water disappears from the balance tank. But suddenly it appears in my driver’s footroom. Since I like to drive barefoot in general, I even notice that if I give me some really warm water sprays on my feet. Now my question is what could have happened and how I fix the error myself. Thanks already for the help. MfG hhp