Mazda3 Steering Wheel Issues
 

The stitching between the top/bottom and left/right sections of the steering wheel on my 05 Mazda 3 has started falling apart, exposing the wheel material below. I have a couple of questions.

1) Is there any chance that sort of thing is covered by any kind of warrenty?
2) Is there any way to replace just the outer part of the wheel? The buttons and airbag work just fine.