UnSolved brake issue on E350 2008
 

In a few days after changing rear brake pads by my certified MB mechanic, all brake fluids leaked from somewhere close to one of the rear tires. Took the car back. He changed many parts including calipers, pump, .... but still can't bleed the brakes. Took the car to dealership (Plano Texas) and after 2 weeks they gave up too.

Need help from your expert opinion solving this frustrating issue. Today is about 60 days that this car is in their shops. Any recommendation from the experts on this forum is appericiated.

I'm confused. There was a leak and it was fixed. Now can't bleed brakes?