Basically my problem is that my sliding back window does not work anymore, any help?

 

either your motor, located behind the back seats, or the switch. pull the switch and clean the contacts and try that, if it still doesnt work you may need a new motor. theres a dedicated thread here somewhere on how to pull the back seats, search and you will find it. can also try hitting the motor with a hammer, that may work to lol.

 

I think it may be the motor because when the switched is pushed down i can tell it has power because the lights dim a little

 

Don't let the dim lights when it is pressed fool you, mine did the same thing, so I cleaned the contact and it worked. Plus way easier to do that first rather than pulling the back seat off when you may not need to.