Does it raise and lower properly, including closing fully? There's a TSB
about regulator issues caused by cracking of the regulator upper holder.
Many times people notice their window doesn't quite close fully. It
sounds to me like the regulator may be beginning to die.
If you wish to take the door apart, remove the plastic triangular trim and
remove the phillips screws holding on the door panel. Expect about three
to be under a little plastic round cover about the diameter of a pencil.
If I recall correctly, there's two on the back of the door (under cover),
two on the front of the door, two at the bottom of the door, and one near
the pull handle (under cover). You'll also need to pry off the small
square cover behind the door handle to get the trim screw off. Once
you've pulled the handle and trianguler trim off removed the panel screws,
you should be ready to remove the panel. Just pull at the bottom and it
should unsnap the rest of the way. You'll need to lift it out of the
window slot. Be careful as you're unplugging things. The last time I
pulled one of these apart, I allowed the weight of the panel to pull on
the trunk/fuel door switch wiring and it pulled the trunk release switch
apart. I was going to put it back together, but I couldn't find all the
parts as they scattered.
Also, consider taking it to the dealer. Unless you've got more than 60k
on the car, anything other than lubrication/adjustment should be covered
by your warranty. If you take it in after you've pulled it apart, the
dealer will probably want to know why it was taken apart.