Door Locks not working right
 

I have a 2000 Limited 4runner and the door locks are giving me problems. They will all unlock but they will not lock unless i do it manually. The door luck button does not work on either door and my keyless entry does either. What is the probklem

Sounds similar to the problem my friend is having on their '99. Did you ever figure it out? Was it the drivers door actuator?