07 yaris 4d4 automated manual serious issues

[maximapitko]

Hello people,
my mom drives a 07 yaris 4d4 with the stupidest most lame tranny ever created-automated manual. I have never experienced a more inefficient, jurky and plane stupid transaxle in my life and I am beyond shocked that toyota would decide to put it in one of their best selling vehicles. Either way, two days ago the car just wouldn't move and just rev. The local dealer doesn't seem to have a clue about this tranny so their diagnosis states that it needs a new tcm. My questions for people here that have some knowledge about this unit:

-does the car have a separate computer for the engine and a separate one for the tranny (most of the newer cars that I work on have only one controlling both engine and tranny)
-does this problem ring a bell for anyone?
-the car has only 44k km (26k miles) and is out of warranty due to age. Do I have a chance if i write to toyota about this in hope that they'll back their product due to the ridiculously low miles?


Thank you in advance for any input.

P.S.
car is in bulgaria, eastern europe.