Bed window switch ?

My rear window won't raise but will lower. It's open about 3 inches at the moment. How difficult is the rear window switch to replace? Any tips? Any suggestions what else it may be? Doesn't appear to be in a bind.
Thanks

 

Instead of replacing the switch right away, check some of the videos at Youtube about "setting the window timing' for Toyota vehicles. No idea if this will help you, but a lot of people are posting that it does. Also, you should be able to check power at the switch itself after turning the ignition switch to ACC, or after starting the engine.