After owning the car a few years, my check engine light would come on and go off. The service manager recommended that I do the cat. converter because it seemed that it was going out and I only had about 15,000 miles before my warranty was up. I think this is problem with some of the Highlanders. And yes, the heater/air is acting up.
Enough room to carry a lot of stuff. I can depend on the car to start and not leave me hanging.