In order to have the correct operation of the door latch mechanism and latch switches.
Ensure correct adjustment of the Door and the Latch switches.
Wipe off any dirt or grease around the door key where it touches the latch switched and door hooks with a soft cloth. Maintaining the smooth movement of the latch mechanism and switches etc…
After replacement of the latch mechanism and/or Latch switches. Make sure to confirm a smooth operation of these parts are in order.