[M5007]

So my passenger seat restraint system malfunction came on. It was hit and miss. But now it's on every time someone sits in the passenger seat. It's the seat cushion sensor. I read about the warranty recall for some E53's, E90's and some E70's. But mine was not included in the recall. Has anyone changed this part? If I replace it myself do I need dealer reset tools or does auto reset? Feedback is appreciated.