Boils down to who the OP believes...or trusts over all of the advice so far
Agree that it 'can' be a mechanical issue with the caliper...as it could also
be an electronic issue with all of the tuff tied together inside the computer system(s)
So much of the advice is based on historically empirical data, but ask if that
includes computer systems and process controls? Even an understanding
of real time and master slave hierarchy...
That is what 'might' be the cause inside of these 'highly integrated' computer
systems
To diagnose these computer systems will require the over all knowledge, a logic
diagram (down to a level of detail to show internal logic for each module, etc)
and a GREAT scan tool (no longer the $500 buck range, but thousands to tens
of thousands of bucks range)
Stuff like with the multiplexed data stream(s) the Master CPU (yeah, gotta understand
master slave on real time metrics here) is not corrupted somehow. Can even be
noise on the power supply or once of the sensory feedback lines, to
a now higher resistance line that messes up the logic timing...and a BIG ETC
So to the OP...do you trust that your mechanic did a good diagnosis and found
nothing wrong with the mechanical brake system? If still worried about that, then
the cheapest at this point is to have 'that' wheel's brake caliper and hose
changed
Or just leave it as is and hope for the best...
