Question by Jin posted 10 months 2 weeks ago in 2015-____ (W205)

I have an accident 2018 C300 vehicle; I just got a new key programmed for the car, I  have changed the Pyro-Fuse, but the vehicle is not starting. My mechanic same not to have a lot of ideas because it is very new. The dealership is too expensive because I have already used them for other things. Does anyone, please have any idea for me?