today the wife was out in a passat we have just bought as a run around, its a 2002 1.8t. as she was only driving to the local shop 1/2 mile away the car ground to a halt, so i went round and met her. The front right and rear left brakes had seized on solid and smoke was pouring out. In order to get the car home i released the pressure by slightly undoing the bleed nipple so she could drive litterally round the corner to the house. now there is no brake pedal at all. Is this likely to be the master cylinder. Also i believe it may have the wrong brake fluid in as it is green and i dont believe it should do. Any help is much appreciated

I'm no expert, but I doubt it's the master cylinder. More like a seized caliper - and by undoing the bleed nipple you have lost all hydraulic pressure in the system now.

 

Sounds like you need to repair/replace the caliper(s); bleed the system and ensure it is filled with nice clean brake fluid!

 

Richard

Umm...Opposite cormers point to one of the split circuits going down.Very unlikely that 2 calipers have seized.Has the car got ABS?

Umm...Opposite cormers point to one of the split circuits going down.Very unlikely that 2 calipers have seized.Has the car got ABS?

 

D'oh - I didn't read that bit.....:blush:

 

Still, I did say I was no expert....:wacko:

Umm...Opposite cormers point to one of the split circuits going down.Very unlikely that 2 calipers have seized.Has the car got ABS?

 

That should have said, Is the ABS light on?-Common failure is the Modulator.

yeah car has abs but no light on, reason im thinking MC is because when i press the pedal there is nothing and feels very notchy. if mineral fluid has been used instead of glycol based it will dissolve the rubber seals and cause the MC to leak. run check with vagcom and shows no faults with abs

update, there is no fluid being pumped to front o/s and rear n/s callipers, does this point to abs pump or master cylinder?