The previous owner had broken the key shell sometime in the past, and glued it back together.
The problem: They did too good of a job and now I can't get it open to change the battery.
Plus, it's ugly.
So I drove down to Lexus of San Antonio this morning and bought an Eternity Key shell, and will transfer the internal module over to it. I'll need tools to get it out, and hopefully the glue didn't slop over and make the module itself unremovable...