The early Scion tC models (mine is a 2005) have very poor quality key remote buttons to unlock and lock the car. I had to replace mine- I hope this helps out someone else!

I printed the faceplate with support but it was a little tough to remove. All the other files should print just fine with no support.
Once all pieces are printed:

1. Remove the black flexible membrane from the original key
2. Insert the buttons into the faceplate upside-down
3. Add a dab of super glue to the 3 corners of the key where the plate will touch it
4. keep holding the face plate and buttons upside down, and flip the key over on top of it
5. Press the face plate against the key for a few minutes.
6. Enjoy your repaired key!