You can't "reset" they key fob, the progamming info is stored in the remote start ecu in the vehicle, not in the key fob.
I found this that may or may not be helpful to you.
You want the ignition status to be OFF before you begin, just as it says in the instructions.
1) Press the registration button once, then press it again while the LCD display is shown, and hold it until it beeps.
The ECU will now reply with 2 long beeps. If not, start over. (Also, the RS fob will chirp again, the factory instructions don't mention this)
2) Hold the first factory fob up to the car's round start button and press the car's round start button twice to the ON position. Leave your foot off the brake so that the car does not start. The red security indicator (a car behind a lock) on the car's dash panel should come on solid for a few seconds and then shut off. If it blinks, you need to shut the car off and start over from step one of the programming process.
3) After the security indicator shuts off, move the factory fob away from the car's round start button and press the car's round start button once to shut the car power off. The red security indicator should flash. If the ECU makes 2 long beeps and a short one, you need to start over from step one of the programming process..
4) Without touching the RS fob, hold your second factory fob up to the start button and press the car's round start button twice to the ON position. Leave your foot off the brake so that the car does not start. The red security indicator should come on solid for a few seconds and then shut off. If it blinks, you need to shut the car off and start over from step one of the programming process, including the part with the first factory fob.
5) After the security indicator shuts off, move the factory fob away from the the car's round start button and press the car's round start button once to shut the car power off. The red security indicator should flash. If the ECU makes 2 long beeps and a short one, you need to start over from step one of the programming process., including the part with the first factory fob..
6) Press the Stop button on the RS Fob until it beeps. The car ignition status should be automatically set to ON at this point. If not, you need to start over from step one of the programming process., including the part with the first factory fob.
7) Test the remote starter according to the owners manual instructions.