I was scanning the owner's manual and found this gem (I had to read it a few times to make sure my eyes weren't playing tricks with me)...
The doors may unlock if a large amount of water splashes on the door handle, such as in the rain or a car wash. (The doors will automatically be locked after approximately 60 seconds if the doors are not opened or closed).
It's nice that they give potential car robbers a full minute to enter the car. I guess they don't want the thief to have to stand out in the rain getting wet waiting to break in.