Quote:
Originally Posted by ainarssems
Probably master brake cylinder getting stuck and not releasing properly all the way, had it on A6. Brakes are dragging a bit, heat up, brake fluid expands and presses brake pads harder and heat them more and so on until pressure increase so much you cannot drive. ABS sensor was probably OK, it was just showing pressure when the car was not expecting any.
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This may be the second time you've saved my bacon if it turns out the replacement brake master cylinder replacement resolves my issue!
The problem I'm facing now after replacing the part is that I can't seem to find any definitive process for bleeding the brakes after putting in a new master cylinder. Does anyone know if I'm right in thinking I connect up a pressure bleeder at 2bar and just start bleeding the calipers F/NS, F/OS, R/NS, R/OS and that's it? Or does brake pedal need to be pushed at any times, or do I need to do anything with VCDS?
I have tried bleeding them already starting at R/NS thinking it's furthest away, although the other issue I've encountered is that the small yellow half-turn cover on the brake reservoir is leaking badly when I apply pressure. Not sure if I need a new reservoir.