When I bought the van the front doors would unlock whenever you opened the corresponding sliding door. The drivers side still does but passenger side will open and not unlock passenger front door. Passenger front door will unlock with regular unlock on key fob. Any ideas how to get this working again. With wife and kids it's so much easier hitting two buttons for everyone to get in then to hit the 2 and then have to hit the unlock twice for other door.

I know it's not a huge issue, just a lazy man's issue.