Originally Posted by Ron 97 F150
Had that happen to mine a few years ago. Spray all the latches with a good oil/grease (I used white lithium grease on mine) and the problem went away. If that does not help then its a bad latch and you will have to troubleshoot which one is bad. Alot of problems can be prevented by normal maintenance on your vehicle by the manual. Everyone remembers to change the oil and filter but forget to lube the u-joints and door latches when they do the maintenance.
I think in the 7 years that has passed, the issue was resolved lol.