Last weekend I noticed the rubber seal on the driver's side by the B-pillar is chewed up. Maybe my company badge or cell phone may have been scuffing it when exiting the vehicle.

Anyway, I am wondering if this is a DIY job or should I just have the dealer replace it? Has anyone else had to replace this gasket? Thanks

 

I had the same problem with the rubber door gasket plus the finish was worn off the left side back bolster of the leather seat.
the dealer replaced the gasket.
they wouldn't replace the seat back just repaired it (painted the leather) it wore off again and they repainted it again.