Installed replacement and all went well for about a week, then it stated acting up, making an odd grinding sound. Then the key would no longer work, insert and turns but does nothing. So ordered a new unit, swapped it out and the same issue, the key manually will not work. The remote unlocks/locks it fine though. The key worked on the original unit that would not work with the remote. I'm at a total loss? Two units from different manufactures fail in the same way? Something tells me Im doing something wrong.
I recommend checking out this post if you haven't. My key cylinder was not mated with the actuator properly and I had similar problems.
https://www.toyota-4runner.org/2856103-post24.html