Why is my 2012 Toyota Camry usb port not working?

When You say Your USB port isn't working, it's pretty vague; do You mean it's not transferring data Letting You play music Not charging a device Has smoke coming out of it There can be a lot of things happening with Your 2012 Toyota Camry's USB port! So, if You've got no charge coming out of it, and no response of any kind, first, check the fuse. That's going to be in the inside cabin fuse panel: Make sure nothing's blown there. This can occur often, because You're Ramming in these devices, and static electricity and misbehaving peripherals are a thing. If that's good, the next thing to look at is to see if any of the pins on the port have become bent -- as well as checking Your device for the same. In the same vein as the last, check if there's any food or other stuff in the port, especially if You have kids. After that, You'll need to start checking the wires and connections, though an odd scenario is also a failure of the ECM, not recognizing the port itself.