Does a 2012 Ford Explorer need to have power steering, fuel injector, transfer case and brake fluid exchange or flushed?Replace PCV valve?Deal with rear axle lubricant and front and rear differential?

http://www.fordservicecontent.com/Ford_Content/catalog/owner_guides/12expog1e.pdf - beginning on Page 414

As far as changing transmission fluid, I recommend you do not follow the manual. I've owned 5 since 1996. When the 96 transmission failed I brought it to my tranny guy who I went to school with and now owns his father's shop. He asked how often I changed the filter and fluid. Since I didn't have the required miles on the odometer, I told him "not yet", due to recommendations in the manual. He suggested I bring the cars in every 40K for a fluid and filter change. I followed all his recommendations. Between the five explorers, only the 96 failed once. It represents over a million miles on five vehicles for model years 96 through 2007. All still in service.