master brake cylinder

  1. S

    Brand new brake cylinder doesn't hold pressure

    My 2012 A3 2.0TDI has been off the road for well over 2 years now with a weird brake fault where the brake pedal won't go firm, no matter how many times it's bled or what parts have been replaced. I've gone to the extreme of blocking off the brake pipes at the ABS pump and bleeding it fully...