This is a great analysis of the PTU problem on the Edge.
I wish you could do analysis of the 2006-2012 Toyota Rav4 V6 transmission.
It has tranny whine that starts around 15K miles and increases in volume over time until its louder than the radio.
No one has ever fixed it and Toyota finally quit producing V6 Rav4 in 2013 because of it.
Here is a post on rav4wolrd forum that has over 200,000 views and 1,000 posts on the tranny whine problem.
http://www.rav4world.com/forums/99-4-3-mechanical/75633-whining-noise-40-50-mph-solved-updated-8-26-10-tsb-out.html