Doors autmagically re-lock on my 2010 TRD Taco?

Sorry Mr. Smartypants. I've read the owners manual dozens of times but somehow managed to skip the part about the door locks. I'll try harder next time.

 

"Someone should make a list of all these weird little features, lol. It took me a while to realize that if you unlock the passenger door w/ key, it unlocks the driver side too. The driver side only unlocks the driver side. So if you need to get something out of the passenger side you have to remember to lock both after you're done."

The key will unlock the passenger side you have to turn the key twice once to unlock the driver side twice to unlock both sides the key should lock both sides no matter what.