Code Systems Inc. makes remote, keyless entry systems for Ford and Chrysler vehicles. By default, when you push the "Lock" button on a Code Systems remote, you'll hear the car's horn sound. If you own a Chrysler vehicle, you can disable the remote feedback option through the information center. Unfortunately, if you have a Ford vehicle, there is no option that allows you to do this.
Step 1
Insert the key into the ignition. Turn the key to "On." Push the dash "Menu" button repeatedly until you see "Personal Settings" appear in the instrument cluster screen.
Step 2
Push the dash "Scroll" button to browse through the settings.
Step 3
Stop when you arrive on "Sound Horn with Remote Key Lock." Push "Menu" to change the setting from "On" to "Off."
Step 4
Remove the key from the ignition. Step out of the vehicle. The horn will no longer sound when you use the remote.