Answers:
John Mo: Can you be more precise about this. Is it a noise heard at highway speed flapping under the car or is it in the dash board ? Can you hear it when riding at city speed or over bumps ? If you want to send a private message on this that would be ok, if I can help I will.
Pwain: I will try to put my hand on this TSB number for the dashboard noise but that may be hard. But they do have something official in their system for sure I saw the official Toyota document, their invoice is not very clear and seems to carry any TSB number. I don't know if this means something to you but on the invoice there is the following code aside each problem. (maybe these are just random numbers IDK)
Dashboard noise: 09TOZ
Seatbelt noise: 19TOZZ01
I will try to gather more information on the subject for the under car noise. The Dealership will ship me the invoice by mail as the director in charge of my file was not avaible when I pickup the car. Good news the noise is gone. If this is not enough I have a friend of mine whose dad is service director in a Toyota Dealer he may be able to help me with finding those numbers. Once I will have all my invoices in hand for thoses problems I will fax them to him so he don't loose his time with his customer and solve their problem right away. I hope in exchange to get the info for you guys.
Lean Burn: I will send this info in Private with some additionnal information if requested. For other members, before asking for the info note that the dealer is in the Montreal Quebec Canada Area.
TheStone11: I did not give a penny for all the work done by them, all covered by the general waranty <36000 miles. They a give me a Yaris for the whole lenght of the repair (cheap but great little car by the way). Note that I do all my maintenance over there, but the car was not bought there (I had a very bad service at my original dealership). So I don't know if they would give a car if not a regular customer. I don't know the rule at this level.
Have a good day. My car is now silencious after 12000 miles of pure hell !!!! I am now in heaven and I can finally enjoy driving this car

for the first time.