I've had intermittent "no lock" scenarios, where I get "beep-beep" on the first lock attempt, and usually locks on the second attempt with no other intervention. Eventually, the passenger door wouldn't lock at all. There have been periods where the door handles are creaking and feel like they are binding. Then days later, they are back to normal. This with only mild weather changes (e.g. into the mid 50's). Over the course of a year, the dealer has changed driver and passenger door lock mechanisms. Car battery was replaced recently. Still I get the fail to lock tone, and now the creaking again.

Anyone else having these issues? Are there any service diagrams for the door panel removal and lock mechanisms?