Could it be ABS module?
I've got no experience of ABS, and don't much want any, but a bit of Googling suggests that perhaps it could.
Have a look at this thread
mechanics.stackexchange.com/questions/7819/brake-p...d
First incident seems to have just been air in the system, but the discussion describes how similar symptoms could apparently be ABS generated. One suggestion/example is that a failure of the valves that normally isolate the brake pedal during an ABS event could allow pedal-generated brake pressure to bleed off fluid into the ABS accumulator reservoir.
This guy
www.youtube.com/watch?v=ceN0a-nPUZw
tried everything and then installed a used ABS module from a scrapyard (THE HORROR) and it fixed his problem.
(He could have described it in a sentence but he preferred to make a tedious Youtube video. Americans, y'know?)
Is there any way you could isolate the ABS system, for diagnostic purposes?
(Fuze removal is mentioned in the above discussion, which would be nice and simple if it works, though it seems to assume correct failsafe operation.
Physical isolation/disconnection would be pretty unambiguous)
Edited by edlithgow on 02/03/2018 at 13:10
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