The power sliding door began to malfunction, would open when activated randomly or not close correctly and would cause the buzzer to ring.

Read about issues with the automatic drs on line and the cost. Now the door can not be open from the inside or outside at all.

A part of multiple other electrical malfunctions that have appeared in the vehicle.

May be best to get rid of the vehicle.

I don't know why or how, but the power door decided to stop working. In order to open or close it, you'd have to really put some muscle into it. And doing this caused the outside handle to snap off. I've taken it in to our trusty mechanic, and he was able to temporarily fix it. But the problem has reccured and it looks like we'll have to break down and take it in to a Toyota dealership's shop. Great.