The powered antennae on my dad's 2000 LC isn't working. The motor is running, but it doesn't move the antennae. Sounds like maybe the teeth aren't catching or something. Does any one have any experience with this? An exploded view on the assembly would be super helpful if anyone has one.

 

Sounds like the antenna mast is broken if the motor is still running. I just fixed my antenna a few weeks ago, luckily I did not have to replace the mast.

Search 4runner power antenna here and on www.t4r.org

There's definitely a write up on T4R.