This Code Alarm CA421 system uses replacement remote: ELVATCC, CATX420
Follow the steps to program your remote:
1) Turn the ignition switch to the ON position.
2) Press and release the valet button 3 times.
3) Press and hold the button of your remote for 3 seconds, or wait until the parking lights flashes once.
4) Go back to step 3 for each remote you’ll program up to a total of 4.
If you can’t find your valet switch click here.