Hello Debi,
How did you ever find your way to this site with a 2002 MB? Advice may be a long time coming since these guys all own vintage MB SLs from the 60's and 70s. Try "The Benz Forum" or "Peach Parts" for your model. I see your a "Buckeye" as am I. In regards to your problem, I do not know for sure but most likely an adjustment is at one end of the cable or the shift rod.
Good luck!