Once you replace them the dealership has to code it to the vehicle, which if you replace it yourself they will most likely charge you an hour labor to do so.
And depending on the location of your DSC moduel its fairly easy. I think on your car, open the hood, its in the hole big hole in the back left with 6 metal brake lines going into a aluminum box. The black box bolted on the front of that is your DSC moduel. Held on by 4 E8 bolts.