Located just ahead of the auto shift?

That switch forces your automatic tranny to start out from a stop in 2nd gear, rather than 1st gear. The idea is to reduce torque at the rear wheels, to reduce the possibility of the tires slipping on a wet or snowy road. I believe that switch is only used in the V6 cars.

The use and function of the switch is covered in your Owner's Manual. If you don't have a manual, you can access them online:

(courtesy of Shoebox):

http://shbox.com/pdf/manuals.html

OK, Thanks Fred. I just got the car and not that familiar with these newer ones yet.
Yes, it does have the V6.