On your boot lid at the corner there is another plastic bellows that is a wire passage. Check cables there too. 

 

Concerning the hazard lights switch. That switch affects the blinkers and hazard lights proper functioning. I think there is a slight possibility to affect your lock - unlock function. 

 

Try to remove it, clean it and put it back again. 

The hazard switch also contains the electronic flasher module/unit, when you swapped them, was it for a new or used unit?. Also, were the part numbers the same on both units, including the letter prefix at the end?.

Was a used genuine part but didn’t check the part number.

In which case, either you have fitted a different spec switch unit, or the used unit could be defective - assuming you have double checked the connections to the unit have been correctly fitted and have not shook loose for any reason.

Yes because turn signals and hazard function work so can’t be a loose connection. So i guess it might be a different spec one.

@kentphil1 tried installing a new hazard switch still no luck. Frustrating that unable to solve any of the issues. Annoys me.