Door lock sensors not working

Hi, if any advice can be giveno please.
I took my f1 197 to a new mechanic , I had various issue's and a major service carried out, one of the jobs were drivers side door lock was very noisy and needed replacement , when I picked up car both door lock opening sensors aren't working , I don't know if it is a coincidence or the mechanic has overlooked something when refitting door lock and if one side don't work would it effect the other side .
Put a bit of a dampener on picking her up .
Thank you
Abs