Power Steering Light On problems of the 2009 Mercedes Benz C350

I have continued to have lighting issues with front, rear, and signal lighting. I am constantly having to pay to replace these lights every year. Now my power steering malfunction ebs light has come on. This is just too much. I just paid $1300 for service b and some other things that needed to be replaced. I am tired of always having to pay to replace lights.