If it's a window that drops open or a manual/electric window that wont wind down or up, you need to replace your window regulator - about £25 second hand to replace.
HAVE A LOOK AT THIS SITE, IT EXPLAINS HOW TO FIX THE PROBLEM... http://forums.vwvortex.com/showthread.php?1542461
Service it
What's the problem with the window?
Replace the regulator. You cannot buy replacement parts for plastic pieces.
Air flow meter goes on these fairly regular. Cheap part and easy to fix. It causes the car to run normally but the turbo won't work hence the loss of power. Check it out.
You should seek professional help or consult your vehicle's instruction manual before attempting to fix the power window on your Nissan Maxima. Your problem may be due to a power switch problem.
Buy a new window switch part #5L1Z14529AA easy fix!.. It's a very common problem the drivers window sticks when going up
define the problem is door switch and not window motor.
Identify the fault/problem. Repair or replace
fixmyblinds.com is a great website on how to fix them, you can also check videos on youtube that can visibly show you how to fix your problem that might be identical.
Need to identify the specific problem before this question can be answered.
You can go to an auto repair shop or a mechanic to fix this problem. They will fix your window and also tell you how to keep it maintained to work properly if you ask them.