I bought my truck with only one key fob. It was not the master key, so I couldn’t go past 80 mph and it had the volume limiter on the stereo. i called my local Ford dealer in the SF Bay Area and they wanted $400 for the fob, cut and programming!
I bought a key fob on Amazon for $30 that had great reviews. Just make sure you have the right serial/model number. If you open your key it’s on the inside of the key fob.
I had a local mobile locksmith come to my house and cut and program my key for $120! He made it the master key, so I turned off the speed limiter and volume control. So much better to drive now!
Do not pay the dealer rip off prices!!!