Brake Drum Wheel Cylinder Problems of Toyota Highlander

My 2005 Toyota Highlander master brake cylinder looks to be leaking near the brake booster. I know that it was replaced by Toyota dealer under NHTSA campaign number: 10v499000. However I do not remember the year. I was driving on local streets, when I stepped on the brake pedal and it went all the way to the floor. The next time I tried to step on the pedal it was working ok. But then the 3rd time I stepped on the brake pedal it was going all the way to the floor again. This was a shocked since it got me to work 9 hours earlier with no issue. I got home and checked the brake fluid level and looked to be at the correct level. I did not drive until next day to take it to my local mechanic, who told me it was the master brake cylinder. He stated that there was a small leak inside the brake booster and needed to replace the whole master brake cylinder. It still is in the shop, however I remembered that it was "swapped out" with a new one under NHTSA campaign number: 10v499000. Could it be possible that the recalled for the new part is still doing the same thing? I would like to know if I can get replaced again under the recall, or have to pay the $550 for new part and labor. Thank you.

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I had this car 2017 brand new, after 10000 mile, I heard some noises for my front wheels, I did my oil and maintance service often by Toyota dealership,I told them all the time about brakes and front wheel make some noises, they always everythings looks fine, after 2 yrs I had engine check lights on, I went to Toyota dealership, and they sayed it s not covered I have pay my own money for fixed, they sayed engine misfire on cylinder, for new car only driving 2yrs, it s happened Feb/05/2019, after 6 months they found front passenger outer cv boot leaking and I have to pay my own packet too, and now I have again problem , when I am driving on freeway about 70 mgh I heard some noise on my car back seats down, when I looked under my car there is no crack or leaking, looks everything good, I dont know where is noices comming from my under car, I just went to maintence today again Toyota dealership they sayed everythings normal, I dont know now what should I do, I am not really happy with my new car and with Toyota.

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I am the one and only,'original new car owner'. At 25k miles I needed to replace brake pads as well as rotors. Rear pads were less than half worn, however both rear rotor had 0. 8 cm, peripheral circular unused rusty rings on both surfaces. Both, left + right wheels. I know I am repeating to double emphasis my anxiety for a car my daughter uses. I suspect both rear calipers (brake-cylinders) receive less than adequate pressures + pads are touching only half of expected rotor area. Immediate & thorough inspection of my vehicle is requested.

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