bmerdoc

I have a 2011 Panamera S and the dealer told me my airbag light was on because my driver's side airbag stage 2 was defective. I googled how to replace the airbag and did the repair myself. How ever the airbag light remains on. I took the car to a friends shop and the same fault code is present Driver's airbag stage 2. My friend says its a hard code and won't clear. Has anyone run into this?
Tony