hello together! my car stood about 4 months, now nothing more zv does not work and the roof does not work either. troubles in the tacho workshop look up and this yellow lamp with the lock lights… battery in the suitcase room can not be fully charged! have now installed a comfort battery of a vw phaeton transitionally…(is full) fuses are all ok! no water or moisture in the suitcase aum, both pumps incl. filters are obviously in order. anyone a e idea? before I use 850€ for a new pump?? zv pump and control with 12v? gruss