Thanks, but I'm not sure how air can get into a closed system and the brake fluid was replaced/flushed with pressure to pass through the ABS. So, this brake fluid is less than 6 months old and brakes were fine after this procedure was done for a few months.
I like the recommendation that tells you to look at lines. But I also know that there have been a few owners on our Facebook pages that have had to replace the master cylinder assembly. In any case, this is a MECHANICAL issue, it should not be all that hard to find and fix - not saying it will be inexpensive to fix.
I'd bleed the system again - only thing is, I'd have the work done (as I did) at a "tech day" (or elsewhere) where I know the guys doing the work. I've heard of people who "bleed some fluid out" - but that is not how its done. You must pump until ALL FLUID is replaced. If they bled until the fluid coming out was "clean and new" and stopped, they probably did not get it all, and If they charged you for a few ounces of fluid, they bled the system, they did NOT flush the system.
I bought four cans of fluid, when they were done, I had one unopened can.