Solved My F(insert number) key commands do not work.

[Shottyo3]

When I try to open the hood on my Viper it doesn't open. Same story on the Lancaster, the bomb bay doors will not open. However, commands assisted by another key like CTRL will work.
How do I solve this and why does it happen?

 

[CuriousMike]

If you're on a laptop, hold the FN key along with the function key.

 

[Shottyo3]

If you're on a laptop, hold the FN key along with the function key.

Thank you! It works flawlessly now!