I suspect you're correct and you clobbered this keybind when you had your push-to-talk bound to the ctrl key. I'm not sure why it isn't appearing in the list of keybinding options in the settings, but it's something I can look into tomorrow.
In the meantime, I have a few workarounds that might be able to help you out: First, It looks like either left or right control will allow you to click through allies on the minimap. If you haven't bound anything to your right control key give it a try and see if that works for you.
If not, you can try fiddling with your keybind file in the PlanetSide install directory (mine is C:\Users\Public\Daybreak Game Company\Installed Games\PlanetSide 2). If you have a shortcut on your desktop just right click > open file location and it should take you to the directory. Once there, follow these instructions:
- Close out your game.
- Locate InputProfile_User.xml and open it up in a text editor.
- ...
Read more