Please for help It started with the brakes repairing in the back because they were stuck. Since I had to wait for the spare parts longer everything was running empty. Then I tried the system to ventilate with little success. I then drove into a workshop which then have all ventilated with moderate success, the heat the pedal was still soft but had the correct braking power. then the car stood about 5 weeks and once again everything empty the complete liquid has got into the I have now given a new HBZY. used brake tongs back and a used ABS control unit. Again, all the vents tried and again everything for the cat. Have asked a machanist what else I can do, he said you need a diagnostic device. Said done and bought Delphi DS150e . there I come to the ABS control unit to vent, have done it as it stands there but also without success. I am grateful for every advice. Mfg Werner