Engine Belts And Pulleys problems of the 2000 Toyota Sienna

I own a 2000 Toyota Sienna which I have had for one year. To date, I have paid to repair the rear seat, as once it was taken out, the mechanism broke and it could not be put back in the car. Also, we have replaced the drivers side seat belt (the whole thing) because the seat belt light would constantly blink. Now the passenger side seat belt light blinks when the seat belt is latched and when nobody is sitting there. The power sliding door has been looked at and repaired three different times. It continues to open, but will never close all the way. Both the drivers side and passengers side power windows will not roll down (or if they do, they will not go back up). There is a banging sound coming from the middle floor board by the gas pedal. The transmission has been replaced. Finally, the rear door latch broke completely and there is no way to open the rear door - from the inside or out. All of this is with normal wear.

Vehicle made loud noise when engine runs which sounds like a hardened belt. Dealer replaced belt which did not fix the problem. Dealer replaced the pulley system which made most of the noise go away, but a slight belt like whisle can still be heard.

This 2000 Sienna is a lemon. At 50 miles the torque converter needed to be replaced. At 100 miles I noticed that the van pulls to the left at highway speeds of 65 to 70 mph. At 28,000 miles the front tires firestone were all chewed up belts showing even though we had 3 alignments done in less than a year. The automatic side passenger door got stuck and would not close, dealer replaced door computer, at 15,000miles paint was chipping off the door handles and a short time later paint was chipping off the front hood as well. At around 20k the remote key/alarm started blowing fuses, it's been back 4 time to get fixed w/ nothing done to fix it. This is the circut that has the alarm, clock and dome light. From the very begining the trans. Sometimes would shift either hard or w/ a dely between 1st & 2nd gear then at about 30,100 miles the clutch cable was replaced. A clunk now happens when going from park to reverse esp. When on a hill. It still does not shift from 1st to 2nd right all the time. The sun visor, when it's covering the left drivers side window, will move and hit the driver when making a left turn at anything over 5 mph. So now every time I make a left hand turn one hand is on the visor and the other on the wheel, when I blew one of the front tires the aaa serviceman couldn't crank the cable that holds the tire back under the van, dealer replaced cable and other parts. The radiocd player skips a lot when going over bumps, have been waiting almost 2 months for the replacment. Mind you we've only had this van less than 2 yrs!!! other stuff, battery was replace within a year, why I don't know, change door keeps popping open (drivers left side) weather stripping on drivers side at the bottom on the car (not door) is falling apart. Head lights are either not aimed right when in spec. Or bad design. I think this is due to the way the lights are shaped, there is very little light directly in front of you but plenty of light on the 2 sides of the road.