I believe that is correct Dan. If the batteries have died or are out of the fob for two minutes or more, a re-synch may need to take place.
After reading Toadhall's response to my question, while I was lubing the latches with wd-40, I decided I'd work the passenger latch up and down and open and close the door several times to try to restore a potential lost contact...or something! After working it several times, the latch worked well and lo and behold, the courtesy lights began to work again with the door. I opened and closed the door several times after letting the lights go out...and the door once again activated the courtesy lights and the puddle light. I was ecstatic and knew my wife would be so pleased. An hour later, picked her up at work and once again the passenger door latch would not activate the courtesy and puddle lights. ****!
The next day, I picked up some silicone spray and was respraying all the latches. As soon as I sprayed the passenger latch, the doors locked and the alarm starting sounding off. After deactivating the alarm with the fob, the activation of the courtesy & puddles lights by the passenger door was once again working. Several tests in the next few minutes...and it worked each and every time. A couple of hours later, we went to take a short trip and once again, no lights activated by the passenger door. DADGUMMIT!
I've since learned thru trial and error that what I am doing when spraying the latch and working it is that I am actually working it up and down (locked, unlocked) to the point to where the micro or thermal sensors overload and interrupt the system. As soon as this happens, the courtesy and puddle lights start to work again from the passenger door. As soon as the system would reset itself, the lights would no longer be activated by the passenger door.
So, I am wondering if there is a way, or need to synch the latch/actuator for the passenger door?