1. Insert one of the working keyless entry remotes into the ignition and turn it to the "ON" position without starting the engine.
2. Press and hold the "Unlock" button on the working remote for at least 10 seconds until the horn beeps once and the hazard lights flash once.
3. Within five seconds, press the "Lock" button on the new keyless entry remote you want to program. The horn should beep twice and the hazard lights should flash twice to indicate successful programming.
4. Repeat steps 2-4 for any additional keyless entry remotes you want to program.
5. Turn the ignition off and remove the working keyless entry remote from the ignition.
Your new keyless entry remote should now be programmed and ready to use. If you encounter any problems or have any questions, you can consult your vehicle owner's manual or contact a certified automotive technician.