Hi all, I'm new to the forum but not new to vw's. I have (among others) a 99-1/2 jetta tdi and the master cylinder went...or so I thought! I replaced it today and have the exact same symtoms, pedal slowly goes almost to floor. The ABS light is on, so now I think that's the problem, but I'm not familiar with ABS (more of an old rabbit, cabriolet, scrocco guy). I should have done more research before I replaced the master but I was quite sure. A friend told me the diaphram in the ABS(pump?) may be leaking causing the pedal to slowly go down. Again, don't know ABS at all. Does that sound possible?Any suggestions? Thanx for the help

 

Have you checked the fuses? There is one in the fuse box in position 9 (5 amp). And there are two 30 amp fuses in the box on top of the battery.