the fuse box is actually a pain in the butt. It is located inside the car on the passenger side. You have to pull the carpet up and look under it. I had to remove my glove box to do this. But it is next to the door. Good luck.
Slave cylinder on a 5 speed manual transmission is found standing by the passenger fender looking below the air flow tube.
The owners manual for a 2004 Toyota Sienna is located in the glove compartment. Alternative, they can be acquired directly from Toyota's website.
It is located on the rear passenger side of the motor below and behind the exhaust manifold. It is easier to get to by removing the passenger side wheel and inner fender trim.
Fender champ 12
According to my Hayes repair manual the PCM is located inside the right front fender.
I do not believe it has one. Look in your owners manual to be sure. Or call your local Toyota dealer.
The passenger airbag can be switched on and off with your key. The switch (looks like a lock) is located on side of the dash on the passengerside and can be operated with the door open only. While switched off, the indicator on the dash will light up to indicate that the passenger's airbag is disabled. According to the manual, unless the airbag is switched off, both airbags will deploy in case of an accident, even if the passenger seat is not in use. Check your manual for proper instructions!
It is near the passenger compartment on the passenger side of the car. I have a 2001 and looked this up in the manual.
Toyota never made a manual version of the Toyota Sequoia.
It is either in the glove compartment, or spare tire compartment.
You will find that info in the owners manual.
You may want to check the kick panel on the passenger side of the car(if there is one) the kick panel is on the passenger inner side ( right beside your right leg). This is below the dash, but is located on the right inner side wall.