I sounded a false alarm regarding an inabiliy to unlatch the trunklid when the electric system fails.
THE '05 AVALON IS EQUIPPED WITH A CABLE FOR MANUALLY TRIPPING THE TRUNKLID LATCH FROM INSIDE THE CAR. THE CABLE IS ACCESSIBLE VIA THE PASS-THROUGH AND IS PROTECTED FROM INTRUDERS BY THE PASS-THROUGH'S KEYED LOCK.
I finally talked a salesman into letting me sit in a corner and read the owner's manual. (Thank you for the prompting, Merritt.) Right there on page 45 was the text and illustration of the factory-installed mechanical alternative.
I apologise for the misinformation. I'd done some of my homework but not enough. OTOH, it's still true that no one at the dealership knew the truth until I briefed them this evening.
To all who doubted me: keep up the good work.
Now, about that note I sent to Consumer Reports.... :-(
Brent "Look out how you use proud words. When you let proud words go, it is not easy to call them back." -- Carl Sandburg, "Primer Lesson"