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Click on the links for the instructions on the sun roof.
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You are going to find that the cables will have to be replaced the plastic pieces that push the roof in to position are broke. They are part of the cable system. In order to do this the entire assembly has to be removed from the roof and disassembled. If you are not interested in an operational sunroof you may be able to force the roof up to close then bock it up with some blocks of wood.
The only way to fix this junk sunroof system is to replace the cables, tracks and motor.
I don't know of anyone on the internet other then Toyota. *****@******.*** can get you everything that you need. I would not use anything but Toyota parts. They are more expensive but you get what you pay for.