I’m currently shopping to get back into a 4th gen 4Runner. I went to pick up what I thought was “the one” but when I test drove the vehicle the brakes were very hard to depress. I would not want to be in the vehicle in an emergency situation. I used to own a similar 06 v8 4x4 and don’t remember the brakes being this difficult. What could be the problem? The independent Toyota/Lexus shop I use recommended me walk away because it sounds like a “brake accumulator and would cost $2300”. I’ve never heard of this issue before, help?