Doors not doing what doors have to do

[FlyingDutchman]

This should be fixable with just a bit of oil or grease, but I want to make sure: The drivers door shuts and then needs a pull from the inside to click, the passenger side's door started opening while driving, appears to close properly but apparently does not. Happened the 1st time with my wife as passenger, so I dropped her off and immediately picked up my mother in law. Her reactions still too quick to make my day, so: Just a drop of oil, (talking about the door locks) or dismantling & cleaning? Had the coupe for 2 months now, otherwise great little grunter!