Hi does fuel pump prime when door opened?
Isx the dash lights coming on?
The gate way is under steering area, possibly knocked during valeting. Do the systems not communicated with still work properly. I.e. can you lock car with remote. Does the steering wheel sound the horn, can you open passenger window from drivers side?
The diagnostic socket on this should be diagnostic can, this would prevent comms but not necessarily stop systems working. Do distributed functions, what works, what does not. Check diagnoctic socket and gate way.
HTH
Jim