I'd just like to weigh in.
I would like to disagree that Toyota's are prone to overheating. I would argue that it is actually related to something else when they do overheat.
We own 1995 Tamaraw Fx (sold because of age), 1999 Revo Diesel, 2001 Altis (sold because of Ondoy) and a 2009 Altis.
The mistake as far I know with most owners is that the engine requires specifically to use coolant only and not mixing it with water (unless otherwise specified). The issue arises then when these cooling pipes end up corroded because of improper cooling agents such as water are used. This of course will reflect towards poor cooling of the engine.
As for the aircon, our Revo's airconditioning system still is running good after 13 years with no major work done to it. The only problem we've had to address was a blocked up mesh filter near the intake which was affecting the aircon compressor's performance. The shop we brought it to simply took it off. This prevented our compressor from flicking on and off consistently which was a previous problem 5 years ago. The compressor was working overtime because of the clogged up filter and almost caused it to break.
The downside was that removal of said filter introduced a bit more outdoor smell into the airconditioning system despite it being in recirculation mode.
This was/is our family's Toyota experience.
For the overheating problem, our engine was displaying extremely high temperature when it was not. So we asked a mechanic to tinker with it which removed the "pverheat issue" without having to tamaper with anything other than the sensor. Basically, just a faulty sensor which caused the engine to go to safety mode for us.
All I mentioned were just for the Revo which were mostly quick fixes.
Total mileage for the vehicle is around 155,000kms and we just had its oil changed.